Merge PR #577 into 14.0

Signed-off-by pedrobaeza

contract/README.rst

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+================================
+Recurring - Contracts Management
+================================
+
+.. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Fcontract-lightgray.png?logo=github
+    :target: https://github.com/OCA/contract/tree/14.0/contract
+    :alt: OCA/contract
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/contract-14-0/contract-14-0-contract
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runbot-Try%20me-875A7B.png
+    :target: https://runbot.odoo-community.org/runbot/110/14.0
+    :alt: Try me on Runbot
+
+|badge1| |badge2| |badge3| |badge4| |badge5| 
+
+This module enables contracts management with recurring
+invoicing functions. Also you can print and send by email contract report.
+
+It works for customer contract and supplier contracts.
+
+Contracts are shown in portal.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Configuration
+=============
+
+To view discount field in contract line, you need to set *Discount on lines* in
+user access rights.
+
+Contracts can be viewed on the portal (list and detail) if the user logged into the portal is a follower of the contract.
+
+Usage
+=====
+
+#. Contracts are in Invoicing -> Customers -> Customer and Invoicing -> Vendors -> Supplier Contracts
+#. When creating a contract, fill fields for selecting the invoicing parameters:
+
+   * a journal
+   * a price list (optional)
+
+#. And add the lines to be invoiced with:
+
+   * the product with a description, a quantity and a price
+   * the recurrence parameters: interval (days, weeks, months, months last day or years),
+     start date, date of next invoice (automatically computed, can be modified) and end date (optional)
+   * auto-price, for having a price automatically obtained from the price list
+   * #START# or #END# in the description field to display the start/end date of
+     the invoiced period in the invoice line description
+   * pre-paid (invoice at period start) or post-paid (invoice at start of next period)
+
+#. The "Generate Recurring Invoices from Contracts" cron runs daily to generate the invoices.
+   If you are in debug mode, you can click on the invoice creation button.
+#. The *Show recurring invoices* shortcut on contracts shows all invoices created from the
+   contract.
+#. The contract report can be printed from the Print menu
+#. The contract can be sent by email with the *Send by Email* button
+#. Contract templates can be created from the Configuration -> Contracts -> Contract Templates menu.
+   They allow to define default journal, price list and lines when creating a contract.
+   To use it, just select the template on the contract and fields will be filled automatically.
+
+* Contracts appear in portal to following users in every contract:
+
+.. image:: https://raw.githubusercontent.com/OCA/contract/14.0/contract/static/src/screenshots/portal-my.png
+.. image:: https://raw.githubusercontent.com/OCA/contract/14.0/contract/static/src/screenshots/portal-list.png
+.. image:: https://raw.githubusercontent.com/OCA/contract/14.0/contract/static/src/screenshots/portal-detail.png
+
+Known issues / Roadmap
+======================
+
+* Recover states and others functional fields in Contracts.
+* Add recurrence flag at template level.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/contract/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us smashing it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/contract/issues/new?body=module:%20contract%0Aversion:%2014.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+~~~~~~~
+
+* Tecnativa
+* ACSONE SA/NV
+
+Contributors
+~~~~~~~~~~~~
+
+* Angel Moya <angel.moya@domatix.com>
+* Dave Lasley <dave@laslabs.com>
+* Miquel Raïch <miquel.raich@eficent.com>
+* Souheil Bejaoui <souheil.bejaoui@acsone.eu>
+* Thomas Binsfeld <thomas.binsfeld@acsone.eu>
+* Guillaume Vandamme <guillaume.vandamme@acsone.eu>
+* Raphaël Reverdy <raphael.reverdy@akretion.com>
+
+* `Tecnativa <https://www.tecnativa.com>`_:
+
+    * Pedro M. Baeza
+    * Carlos Dauden
+    * Vicent Cubells
+    * Rafael Blasco
+    * Víctor Martínez
+* Iván Antón <ozono@ozonomultimedia.com>
+
+Maintainers
+~~~~~~~~~~~
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+This module is part of the `OCA/contract <https://github.com/OCA/contract/tree/14.0/contract>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

contract/__init__.py

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+from . import controllers
+from . import models
+from . import wizards

contract/__manifest__.py

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+# Copyright 2004-2010 OpenERP SA
+# Copyright 2014-2018 Tecnativa - Pedro M. Baeza
+# Copyright 2015 Domatix
+# Copyright 2016-2018 Tecnativa - Carlos Dauden
+# Copyright 2017 Tecnativa - Vicent Cubells
+# Copyright 2016-2017 LasLabs Inc.
+# Copyright 2018-2019 ACSONE SA/NV
+# Copyright 2020-2021 Tecnativa - Pedro M. Baeza
+# Copyright 2020 Tecnativa - Víctor Martínez
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+{
+    "name": "Recurring - Contracts Management",
+    "version": "14.0.1.0.0",
+    "category": "Contract Management",
+    "license": "AGPL-3",
+    "author": "Tecnativa, ACSONE SA/NV, Odoo Community Association (OCA)",
+    "website": "https://github.com/OCA/contract",
+    "depends": ["base", "account", "product", "portal"],
+    "external_dependencies": {"python": ["dateutil"]},
+    "data": [
+        "security/groups.xml",
+        "security/contract_tag.xml",
+        "security/ir.model.access.csv",
+        "security/contract_security.xml",
+        "security/contract_terminate_reason.xml",
+        "report/report_contract.xml",
+        "report/contract_views.xml",
+        "data/contract_cron.xml",
+        "data/contract_renew_cron.xml",
+        "data/mail_template.xml",
+        "data/mail_message_subtype.xml",
+        "data/ir_ui_menu.xml",
+        "wizards/contract_line_wizard.xml",
+        "wizards/contract_manually_create_invoice.xml",
+        "wizards/contract_contract_terminate.xml",
+        "views/contract_tag.xml",
+        "views/assets.xml",
+        "views/abstract_contract_line.xml",
+        "views/contract.xml",
+        "views/contract_line.xml",
+        "views/contract_template.xml",
+        "views/contract_template_line.xml",
+        "views/res_partner_view.xml",
+        "views/res_config_settings.xml",
+        "views/contract_terminate_reason.xml",
+        "views/contract_portal_templates.xml",
+    ],
+    "installable": True,
+}

contract/controllers/__init__.py

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+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import main

contract/controllers/main.py

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+# Copyright 2020 Tecnativa - Víctor Martínez
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from odoo import _, http
+from odoo.exceptions import AccessError, MissingError
+from odoo.http import request
+
+from odoo.addons.portal.controllers.portal import CustomerPortal, pager as portal_pager
+
+
+class PortalContract(CustomerPortal):
+    def _prepare_portal_layout_values(self):
+        values = super()._prepare_portal_layout_values()
+        model = "contract.contract"
+        values["contract_count"] = 0
+        if request.env[model].check_access_rights("read", raise_exception=False):
+            values["contract_count"] = request.env[model].search_count([])
+        return values
+
+    def _contract_get_page_view_values(self, contract, access_token, **kwargs):
+        values = {
+            "page_name": "Contracts",
+            "contract": contract,
+        }
+        return self._get_page_view_values(
+            contract, access_token, values, "my_contracts_history", False, **kwargs
+        )
+
+    def _get_filter_domain(self, kw):
+        return []
+
+    @http.route(
+        ["/my/contracts", "/my/contracts/page/<int:page>"],
+        type="http",
+        auth="user",
+        website=True,
+    )
+    def portal_my_contracts(
+        self, page=1, date_begin=None, date_end=None, sortby=None, **kw
+    ):
+        values = self._prepare_portal_layout_values()
+        contract_obj = request.env["contract.contract"]
+        domain = self._get_filter_domain(kw)
+        searchbar_sortings = {
+            "date": {"label": _("Date"), "order": "recurring_next_date desc"},
+            "name": {"label": _("Name"), "order": "name desc"},
+            "code": {"label": _("Reference"), "order": "code desc"},
+        }
+        # default sort by order
+        if not sortby:
+            sortby = "date"
+        order = searchbar_sortings[sortby]["order"]
+        # count for pager
+        contract_count = contract_obj.search_count(domain)
+        # pager
+        pager = portal_pager(
+            url="/my/contracts",
+            url_args={
+                "date_begin": date_begin,
+                "date_end": date_end,
+                "sortby": sortby,
+            },
+            total=contract_count,
+            page=page,
+            step=self._items_per_page,
+        )
+        # content according to pager and archive selected
+        contracts = contract_obj.search(
+            domain, order=order, limit=self._items_per_page, offset=pager["offset"]
+        )
+        request.session["my_contracts_history"] = contracts.ids[:100]
+        values.update(
+            {
+                "date": date_begin,
+                "contracts": contracts,
+                "page_name": "Contracts",
+                "pager": pager,
+                "default_url": "/my/contracts",
+                "searchbar_sortings": searchbar_sortings,
+                "sortby": sortby,
+            }
+        )
+        return request.render("contract.portal_my_contracts", values)
+
+    @http.route(
+        ["/my/contracts/<int:contract_contract_id>"],
+        type="http",
+        auth="public",
+        website=True,
+    )
+    def portal_my_contract_detail(self, contract_contract_id, access_token=None, **kw):
+        try:
+            contract_sudo = self._document_check_access(
+                "contract.contract", contract_contract_id, access_token
+            )
+        except (AccessError, MissingError):
+            return request.redirect("/my")
+        values = self._contract_get_page_view_values(contract_sudo, access_token, **kw)
+        return request.render("contract.portal_contract_page", values)

contract/data/contract_cron.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<odoo noupdate="1">
+    <record model="ir.cron" id="contract_cron_for_invoice">
+        <field name="name">Generate Recurring Invoices from Contracts</field>
+        <field name="model_id" ref="model_contract_contract" />
+        <field name="state">code</field>
+        <field name="code">model.cron_recurring_create_invoice()</field>
+        <field name="user_id" ref="base.user_root" />
+        <field name="interval_number">1</field>
+        <field name="interval_type">days</field>
+        <field name="numbercall">-1</field>
+        <field eval="False" name="doall" />
+    </record>
+</odoo>

contract/data/contract_renew_cron.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<odoo noupdate="1">
+    <record model="ir.cron" id="contract_line_cron_for_renew">
+        <field name="name">Renew Contract lines</field>
+        <field name="model_id" ref="model_contract_line" />
+        <field name="state">code</field>
+        <field name="code">model.cron_renew_contract_line()</field>
+        <field name="user_id" ref="base.user_root" />
+        <field name="interval_number">1</field>
+        <field name="interval_type">days</field>
+        <field name="numbercall">-1</field>
+        <field eval="False" name="doall" />
+    </record>
+</odoo>

contract/data/ir_ui_menu.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<odoo>
+    <menuitem
+        id="menu_config_contract"
+        name="Contracts"
+        sequence="1"
+        parent="account.menu_finance_configuration"
+    />
+</odoo>

contract/data/mail_message_subtype.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<odoo noupdate="1">
+    <record id="mail_message_subtype_invoice_created" model="mail.message.subtype">
+        <field name="name">Invoice created</field>
+        <field name="res_model">contract.contract</field>
+    </record>
+    <record
+        id="mail_message_subtype_contract_modification"
+        model="mail.message.subtype"
+    >
+        <field name="name">Contract modifications</field>
+        <field name="res_model">contract.contract</field>
+        <field name="default" eval="False" />
+    </record>
+</odoo>

contract/data/mail_template.xml

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+<?xml version="1.0" encoding="utf-8" ?>
+<odoo noupdate="1">
+    <record id="email_contract_template" model="mail.template">
+        <field name="name">Email Contract Template</field>
+        <field
+            name="email_from"
+        >${(object.user_id.email and '%s &lt;%s&gt;' % (object.user_id.name, object.user_id.email) or '')|safe}</field>
+        <field
+            name="subject"
+        >${object.company_id.name} Contract (Ref ${object.name or 'n/a'})</field>
+        <field name="partner_to">${object.partner_id.id}</field>
+        <field name="model_id" ref="model_contract_contract" />
+        <field name="auto_delete" eval="True" />
+        <field name="report_template" ref="contract.report_contract" />
+        <field name="report_name">Contract</field>
+        <field name="lang">${object.partner_id.lang}</field>
+        <field
+            name="body_html"
+        ><![CDATA[
+<div style="font-family: 'Lucida Grande', Ubuntu, Arial, Verdana, sans-serif; font-size: 12px; color: rgb(34, 34, 34); background-color: #FFF; ">
+    <p>Hello ${object.partner_id.name or ''},</p>
+    <p>A new contract has been created: </p>
+
+    <p style="border-left: 1px solid #8e0000; margin-left: 30px;">
+       &nbsp;&nbsp;<strong>REFERENCES</strong><br />
+       &nbsp;&nbsp;Contract: <strong>${object.name}</strong><br />
+       % if object.date_start:
+       &nbsp;&nbsp;Contract Date Start: ${object.date_start or ''}<br />
+       % endif
+
+       % if object.user_id:
+       % if object.user_id.email:
+       &nbsp;&nbsp;Your Contact: <a href="mailto:${object.user_id.email or ''}?subject=Contract%20${object.name}">${object.user_id.name}</a>
+       % else:
+       &nbsp;&nbsp;Your Contact: ${object.user_id.name}
+       % endif
+       % endif
+    </p>
+
+    <br/>
+    <p>If you have any questions, do not hesitate to contact us.</p>
+    <p>Thank you for choosing ${object.company_id.name or 'us'}!</p>
+    <br/>
+    <br/>
+    <div style="width: 375px; margin: 0px; padding: 0px; background-color: #8E0000; border-top-left-radius: 5px 5px; border-top-right-radius: 5px 5px; background-repeat: repeat no-repeat;">
+        <h3 style="margin: 0px; padding: 2px 14px; font-size: 12px; color: #DDD;">
+            <strong style="text-transform:uppercase;">${object.company_id.name}</strong></h3>
+    </div>
+    <div style="width: 347px; margin: 0px; padding: 5px 14px; line-height: 16px; background-color: #F2F2F2;">
+        <span style="color: #222; margin-bottom: 5px; display: block; ">
+            ${object.company_id.partner_id.sudo().with_context(show_address=True, html_format=True).name_get()[0][1] | safe}
+        </span>
+        % if object.company_id.phone:
+            <div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">
+                Phone: ${object.company_id.phone}
+            </div>
+        % endif
+        % if object.company_id.website:
+            <div>
+                Web: <a href="${object.company_id.website}">${object.company_id.website}</a>
+            </div>
+        %endif
+        <p></p>
+    </div>
+    <p></p>
+    <a href="${object.get_base_url()}/my/contracts/${object.id}?access_token=${object.access_token}" target="_blank" style="background-color:#875A7B;padding: 8px 16px 8px 16px; text-decoration: none; color: #fff; border-radius: 5px; font-size:13px;">View contract</a>
+</div>
+        ]]></field>
+    </record>
+    <record id="mail_template_contract_modification" model="mail.template">
+        <field name="name">Contract Modification Template</field>
+        <field
+            name="email_from"
+        >${(object.user_id.email and '%s &lt;%s&gt;' % (object.user_id.name, object.user_id.email) or '')|safe}</field>
+        <field
+            name="subject"
+        >${object.company_id.name} Contract (Ref ${object.name or 'n/a'}) - Modifications</field>
+        <field name="model_id" ref="model_contract_contract" />
+        <field name="lang">${object.partner_id.lang}</field>
+        <field
+            name="body_html"
+        ><![CDATA[
+            <p>Hello</p>
+            <p>We have modifications on the contract that we want to notify you.</p>
+        ]]></field>
+    </record>
+    <template
+        id="mail_notification_contract"
+        inherit_id="mail.mail_notification_paynow"
+        primary="True"
+    >
+        <xpath expr="//t[@t-raw='message.body']" position="after">
+            <t t-raw="0" />
+        </xpath>
+    </template>
+    <template id="template_contract_modification" name="Contract Modification">
+        <t t-call="contract.mail_notification_contract">
+            <table border="1" align="center">
+                <thead>
+                    <tr>
+                        <th name="th_date">Date</th>
+                        <th name="th_description">Description</th>
+                    </tr>
+                </thead>
+                <tbody>
+                    <t t-foreach="record.modification_ids" t-as="modification">
+                        <tr t-if="not modification.sent">
+                            <td name="td_date">
+                                <span t-field="modification.date" />
+                            </td>
+                            <td name="td_description">
+                                <div t-field="modification.description" />
+                            </td>
+                        </tr>
+                    </t>
+                </tbody>
+            </table>
+        </t>
+    </template>
+</odoo>

contract/models/__init__.py

@@ -0,0 +1,16 @@
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from . import contract_recurrency_mixin  # should be first
+from . import abstract_contract
+from . import abstract_contract_line
+from . import contract_template
+from . import contract
+from . import contract_template_line
+from . import contract_line
+from . import contract_modification
+from . import account_move
+from . import res_partner
+from . import contract_tag
+from . import res_company
+from . import res_config_settings
+from . import contract_terminate_reason

contract/models/abstract_contract.py

@@ -0,0 +1,69 @@
+# Copyright 2004-2010 OpenERP SA
+# Copyright 2014 Angel Moya <angel.moya@domatix.com>
+# Copyright 2015-2020 Tecnativa - Pedro M. Baeza
+# Copyright 2016-2018 Carlos Dauden <carlos.dauden@tecnativa.com>
+# Copyright 2016-2017 LasLabs Inc.
+# Copyright 2018 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+
+
+class ContractAbstractContract(models.AbstractModel):
+    _inherit = "contract.recurrency.basic.mixin"
+    _name = "contract.abstract.contract"
+    _description = "Abstract Recurring Contract"
+
+    # These fields will not be synced to the contract
+    NO_SYNC = ["name", "partner_id", "company_id"]
+
+    name = fields.Char(required=True)
+    # Needed for avoiding errors on several inherited behaviors
+    partner_id = fields.Many2one(
+        comodel_name="res.partner", string="Partner", index=True
+    )
+    pricelist_id = fields.Many2one(comodel_name="product.pricelist", string="Pricelist")
+    contract_type = fields.Selection(
+        selection=[("sale", "Customer"), ("purchase", "Supplier")],
+        default="sale",
+        index=True,
+    )
+    journal_id = fields.Many2one(
+        comodel_name="account.journal",
+        string="Journal",
+        domain="[('type', '=', contract_type)," "('company_id', '=', company_id)]",
+        compute="_compute_journal_id",
+        store=True,
+        readonly=False,
+        index=True,
+    )
+    company_id = fields.Many2one(
+        "res.company",
+        string="Company",
+        required=True,
+        default=lambda self: self.env.company.id,
+    )
+    line_recurrence = fields.Boolean(
+        string="Recurrence at line level?",
+        help="Mark this check if you want to control recurrrence at line level instead"
+        " of all together for the whole contract.",
+    )
+
+    @api.onchange("contract_type")
+    def _onchange_contract_type(self):
+        if self.contract_type == "purchase":
+            self.contract_line_ids.filtered("automatic_price").update(
+                {"automatic_price": False}
+            )
+
+    @api.depends("contract_type", "company_id")
+    def _compute_journal_id(self):
+        AccountJournal = self.env["account.journal"]
+        for contract in self:
+            domain = [
+                ("type", "=", contract.contract_type),
+                ("company_id", "=", contract.company_id.id),
+            ]
+            journal = AccountJournal.search(domain, limit=1)
+            if journal:
+                contract.journal_id = journal.id

contract/models/abstract_contract_line.py

@@ -0,0 +1,260 @@
+# Copyright 2004-2010 OpenERP SA
+# Copyright 2014 Angel Moya <angel.moya@domatix.com>
+# Copyright 2015 Pedro M. Baeza <pedro.baeza@tecnativa.com>
+# Copyright 2016-2018 Carlos Dauden <carlos.dauden@tecnativa.com>
+# Copyright 2016-2017 LasLabs Inc.
+# Copyright 2018 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+from odoo.exceptions import ValidationError
+from odoo.tools.translate import _
+
+
+class ContractAbstractContractLine(models.AbstractModel):
+    _inherit = "contract.recurrency.basic.mixin"
+    _name = "contract.abstract.contract.line"
+    _description = "Abstract Recurring Contract Line"
+
+    product_id = fields.Many2one("product.product", string="Product")
+
+    name = fields.Text(string="Description", required=True)
+    quantity = fields.Float(default=1.0, required=True)
+    uom_id = fields.Many2one("uom.uom", string="Unit of Measure")
+    automatic_price = fields.Boolean(
+        string="Auto-price?",
+        help="If this is marked, the price will be obtained automatically "
+        "applying the pricelist to the product. If not, you will be "
+        "able to introduce a manual price",
+    )
+    specific_price = fields.Float(string="Specific Price")
+    price_unit = fields.Float(
+        string="Unit Price",
+        compute="_compute_price_unit",
+        inverse="_inverse_price_unit",
+    )
+    price_subtotal = fields.Float(
+        compute="_compute_price_subtotal",
+        digits="Account",
+        string="Sub Total",
+    )
+    discount = fields.Float(
+        string="Discount (%)",
+        digits="Discount",
+        help="Discount that is applied in generated invoices."
+        " It should be less or equal to 100",
+    )
+    sequence = fields.Integer(
+        string="Sequence",
+        default=10,
+        help="Sequence of the contract line when displaying contracts",
+    )
+    recurring_rule_type = fields.Selection(
+        compute="_compute_recurring_rule_type",
+        store=True,
+        readonly=False,
+        required=True,
+        copy=True,
+    )
+    recurring_invoicing_type = fields.Selection(
+        compute="_compute_recurring_invoicing_type",
+        store=True,
+        readonly=False,
+        required=True,
+        copy=True,
+    )
+    recurring_interval = fields.Integer(
+        compute="_compute_recurring_interval",
+        store=True,
+        readonly=False,
+        required=True,
+        copy=True,
+    )
+    date_start = fields.Date(
+        compute="_compute_date_start",
+        store=True,
+        readonly=False,
+        copy=True,
+    )
+    last_date_invoiced = fields.Date(string="Last Date Invoiced")
+    is_canceled = fields.Boolean(string="Canceled", default=False)
+    is_auto_renew = fields.Boolean(string="Auto Renew", default=False)
+    auto_renew_interval = fields.Integer(
+        default=1,
+        string="Renew Every",
+        help="Renew every (Days/Week/Month/Year)",
+    )
+    auto_renew_rule_type = fields.Selection(
+        [
+            ("daily", "Day(s)"),
+            ("weekly", "Week(s)"),
+            ("monthly", "Month(s)"),
+            ("yearly", "Year(s)"),
+        ],
+        default="yearly",
+        string="Renewal type",
+        help="Specify Interval for automatic renewal.",
+    )
+    termination_notice_interval = fields.Integer(
+        default=1, string="Termination Notice Before"
+    )
+    termination_notice_rule_type = fields.Selection(
+        [("daily", "Day(s)"), ("weekly", "Week(s)"), ("monthly", "Month(s)")],
+        default="monthly",
+        string="Termination Notice type",
+    )
+    contract_id = fields.Many2one(
+        string="Contract",
+        comodel_name="contract.abstract.contract",
+        required=True,
+        ondelete="cascade",
+    )
+    display_type = fields.Selection(
+        selection=[("line_section", "Section"), ("line_note", "Note")],
+        default=False,
+        help="Technical field for UX purpose.",
+    )
+    note_invoicing_mode = fields.Selection(
+        selection=[
+            ("with_previous_line", "With previous line"),
+            ("with_next_line", "With next line"),
+            ("custom", "Custom"),
+        ],
+        default="with_previous_line",
+        help="Defines when the Note is invoiced:\n"
+        "- With previous line: If the previous line can be invoiced.\n"
+        "- With next line: If the next line can be invoiced.\n"
+        "- Custom: Depending on the recurrence to be define.",
+    )
+    is_recurring_note = fields.Boolean(compute="_compute_is_recurring_note")
+    company_id = fields.Many2one(related="contract_id.company_id", store=True)
+
+    def _set_recurrence_field(self, field):
+        """Helper method for computed methods that gets the equivalent field
+        in the header.
+
+        We need to re-assign the original value for avoiding a missing error.
+        """
+        for record in self:
+            if record.contract_id.line_recurrence:
+                record[field] = record[field]
+            else:
+                record[field] = record.contract_id[field]
+
+    @api.depends("contract_id.recurring_rule_type", "contract_id.line_recurrence")
+    def _compute_recurring_rule_type(self):
+        self._set_recurrence_field("recurring_rule_type")
+
+    @api.depends("contract_id.recurring_invoicing_type", "contract_id.line_recurrence")
+    def _compute_recurring_invoicing_type(self):
+        self._set_recurrence_field("recurring_invoicing_type")
+
+    @api.depends("contract_id.recurring_interval", "contract_id.line_recurrence")
+    def _compute_recurring_interval(self):
+        self._set_recurrence_field("recurring_interval")
+
+    @api.depends("contract_id.date_start", "contract_id.line_recurrence")
+    def _compute_date_start(self):
+        self._set_recurrence_field("date_start")
+
+    @api.depends("contract_id.recurring_next_date", "contract_id.line_recurrence")
+    def _compute_recurring_next_date(self):
+        super()._compute_recurring_next_date()
+        self._set_recurrence_field("recurring_next_date")
+
+    @api.depends("display_type", "note_invoicing_mode")
+    def _compute_is_recurring_note(self):
+        for record in self:
+            record.is_recurring_note = (
+                record.display_type == "line_note"
+                and record.note_invoicing_mode == "custom"
+            )
+
+    @api.depends(
+        "automatic_price",
+        "specific_price",
+        "product_id",
+        "quantity",
+        "contract_id.pricelist_id",
+        "contract_id.partner_id",
+    )
+    def _compute_price_unit(self):
+        """Get the specific price if no auto-price, and the price obtained
+        from the pricelist otherwise.
+        """
+        for line in self:
+            if line.automatic_price:
+                pricelist = (
+                    line.contract_id.pricelist_id
+                    or line.contract_id.partner_id.with_company(
+                        line.contract_id.company_id
+                    ).property_product_pricelist
+                )
+                product = line.product_id.with_context(
+                    quantity=line.env.context.get(
+                        "contract_line_qty",
+                        line.quantity,
+                    ),
+                    pricelist=pricelist.id,
+                    partner=line.contract_id.partner_id.id,
+                    date=line.env.context.get(
+                        "old_date", fields.Date.context_today(line)
+                    ),
+                )
+                line.price_unit = product.price
+            else:
+                line.price_unit = line.specific_price
+
+    # Tip in https://github.com/odoo/odoo/issues/23891#issuecomment-376910788
+    @api.onchange("price_unit")
+    def _inverse_price_unit(self):
+        """Store the specific price in the no auto-price records."""
+        for line in self.filtered(lambda x: not x.automatic_price):
+            line.specific_price = line.price_unit
+
+    @api.depends("quantity", "price_unit", "discount")
+    def _compute_price_subtotal(self):
+        for line in self:
+            subtotal = line.quantity * line.price_unit
+            discount = line.discount / 100
+            subtotal *= 1 - discount
+            if line.contract_id.pricelist_id:
+                cur = line.contract_id.pricelist_id.currency_id
+                line.price_subtotal = cur.round(subtotal)
+            else:
+                line.price_subtotal = subtotal
+
+    @api.constrains("discount")
+    def _check_discount(self):
+        for line in self:
+            if line.discount > 100:
+                raise ValidationError(_("Discount should be less or equal to 100"))
+
+    @api.onchange("product_id")
+    def _onchange_product_id(self):
+        if not self.product_id:
+            return {"domain": {"uom_id": []}}
+
+        vals = {}
+        domain = {
+            "uom_id": [("category_id", "=", self.product_id.uom_id.category_id.id)]
+        }
+        if not self.uom_id or (
+            self.product_id.uom_id.category_id.id != self.uom_id.category_id.id
+        ):
+            vals["uom_id"] = self.product_id.uom_id
+
+        date = self.recurring_next_date or fields.Date.context_today(self)
+        partner = self.contract_id.partner_id or self.env.user.partner_id
+        product = self.product_id.with_context(
+            lang=partner.lang,
+            partner=partner.id,
+            quantity=self.quantity,
+            date=date,
+            pricelist=self.contract_id.pricelist_id.id,
+            uom=self.uom_id.id,
+        )
+        vals["name"] = self.product_id.get_product_multiline_description_sale()
+        vals["price_unit"] = product.price
+        self.update(vals)
+        return {"domain": domain}

contract/models/account_move.py

@@ -0,0 +1,21 @@
+# Copyright 2016 Tecnativa - Carlos Dauden
+# Copyright 2018 ACSONE SA/NV.
+# Copyright 2020 Tecnativa - Pedro M. Baeza
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class AccountMove(models.Model):
+    _inherit = "account.move"
+
+    # We keep this field for migration purpose
+    old_contract_id = fields.Many2one("contract.contract")
+
+
+class AccountMoveLine(models.Model):
+    _inherit = "account.move.line"
+
+    contract_line_id = fields.Many2one(
+        "contract.line", string="Contract Line", index=True
+    )

contract/models/contract.py

@@ -0,0 +1,648 @@
+# Copyright 2004-2010 OpenERP SA
+# Copyright 2014 Angel Moya <angel.moya@domatix.com>
+# Copyright 2015-2020 Tecnativa - Pedro M. Baeza
+# Copyright 2016-2018 Tecnativa - Carlos Dauden
+# Copyright 2016-2017 LasLabs Inc.
+# Copyright 2018 ACSONE SA/NV
+# Copyright 2021 Tecnativa - Víctor Martínez
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+from odoo.exceptions import UserError, ValidationError
+from odoo.tests import Form
+from odoo.tools.translate import _
+
+
+class ContractContract(models.Model):
+    _name = "contract.contract"
+    _description = "Contract"
+    _order = "code, name asc"
+    _inherit = [
+        "mail.thread",
+        "mail.activity.mixin",
+        "contract.abstract.contract",
+        "contract.recurrency.mixin",
+        "portal.mixin",
+    ]
+
+    active = fields.Boolean(
+        default=True,
+    )
+    code = fields.Char(
+        string="Reference",
+    )
+    group_id = fields.Many2one(
+        string="Group",
+        comodel_name="account.analytic.account",
+        ondelete="restrict",
+    )
+    currency_id = fields.Many2one(
+        compute="_compute_currency_id",
+        inverse="_inverse_currency_id",
+        comodel_name="res.currency",
+        string="Currency",
+    )
+    manual_currency_id = fields.Many2one(
+        comodel_name="res.currency",
+        readonly=True,
+    )
+    contract_template_id = fields.Many2one(
+        string="Contract Template", comodel_name="contract.template"
+    )
+    contract_line_ids = fields.One2many(
+        string="Contract lines",
+        comodel_name="contract.line",
+        inverse_name="contract_id",
+        copy=True,
+    )
+    # Trick for being able to have 2 different views for the same o2m
+    # We need this as one2many widget doesn't allow to define in the view
+    # the same field 2 times with different views. 2 views are needed because
+    # one of them must be editable inline and the other not, which can't be
+    # parametrized through attrs.
+    contract_line_fixed_ids = fields.One2many(
+        string="Contract lines (fixed)",
+        comodel_name="contract.line",
+        inverse_name="contract_id",
+    )
+
+    user_id = fields.Many2one(
+        comodel_name="res.users",
+        string="Responsible",
+        index=True,
+        default=lambda self: self.env.user,
+    )
+    create_invoice_visibility = fields.Boolean(
+        compute="_compute_create_invoice_visibility"
+    )
+    date_end = fields.Date(compute="_compute_date_end", store=True, readonly=False)
+    payment_term_id = fields.Many2one(
+        comodel_name="account.payment.term", string="Payment Terms", index=True
+    )
+    invoice_count = fields.Integer(compute="_compute_invoice_count")
+    fiscal_position_id = fields.Many2one(
+        comodel_name="account.fiscal.position",
+        string="Fiscal Position",
+        ondelete="restrict",
+    )
+    invoice_partner_id = fields.Many2one(
+        string="Invoicing contact",
+        comodel_name="res.partner",
+        ondelete="restrict",
+    )
+    partner_id = fields.Many2one(
+        comodel_name="res.partner", inverse="_inverse_partner_id", required=True
+    )
+
+    commercial_partner_id = fields.Many2one(
+        "res.partner",
+        compute_sudo=True,
+        related="partner_id.commercial_partner_id",
+        store=True,
+        string="Commercial Entity",
+        index=True,
+    )
+    tag_ids = fields.Many2many(comodel_name="contract.tag", string="Tags")
+    note = fields.Text(string="Notes")
+    is_terminated = fields.Boolean(string="Terminated", readonly=True, copy=False)
+    terminate_reason_id = fields.Many2one(
+        comodel_name="contract.terminate.reason",
+        string="Termination Reason",
+        ondelete="restrict",
+        readonly=True,
+        copy=False,
+        tracking=True,
+    )
+    terminate_comment = fields.Text(
+        string="Termination Comment",
+        readonly=True,
+        copy=False,
+        tracking=True,
+    )
+    terminate_date = fields.Date(
+        string="Termination Date",
+        readonly=True,
+        copy=False,
+        tracking=True,
+    )
+    modification_ids = fields.One2many(
+        comodel_name="contract.modification",
+        inverse_name="contract_id",
+        string="Modifications",
+    )
+
+    def get_formview_id(self, access_uid=None):
+        if self.contract_type == "sale":
+            return self.env.ref("contract.contract_contract_customer_form_view").id
+        else:
+            return self.env.ref("contract.contract_contract_supplier_form_view").id
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        records = super().create(vals_list)
+        records._set_start_contract_modification()
+        return records
+
+    def write(self, vals):
+        if "modification_ids" in vals:
+            res = super(
+                ContractContract, self.with_context(bypass_modification_send=True)
+            ).write(vals)
+            self._modification_mail_send()
+        else:
+            res = super(ContractContract, self).write(vals)
+        return res
+
+    @api.model
+    def _set_start_contract_modification(self):
+        subtype_id = self.env.ref("contract.mail_message_subtype_contract_modification")
+        for record in self:
+            if record.contract_line_ids:
+                date_start = min(record.contract_line_ids.mapped("date_start"))
+            else:
+                date_start = record.create_date
+            record.message_subscribe(
+                partner_ids=[record.partner_id.id], subtype_ids=[subtype_id.id]
+            )
+            record.with_context(skip_modification_mail=True).write(
+                {
+                    "modification_ids": [
+                        (0, 0, {"date": date_start, "description": _("Contract start")})
+                    ]
+                }
+            )
+
+    @api.model
+    def _modification_mail_send(self):
+        for record in self:
+            modification_ids_not_sent = record.modification_ids.filtered(
+                lambda x: not x.sent
+            )
+            if modification_ids_not_sent:
+                if not self.env.context.get("skip_modification_mail"):
+                    record.with_context(
+                        default_subtype_id=self.env.ref(
+                            "contract.mail_message_subtype_contract_modification"
+                        ).id,
+                    ).message_post_with_template(
+                        self.env.ref("contract.mail_template_contract_modification").id,
+                        email_layout_xmlid="contract.template_contract_modification",
+                    )
+                modification_ids_not_sent.write({"sent": True})
+
+    def _compute_access_url(self):
+        for record in self:
+            record.access_url = "/my/contracts/{}".format(record.id)
+
+    def action_preview(self):
+        """Invoked when 'Preview' button in contract form view is clicked."""
+        self.ensure_one()
+        return {
+            "type": "ir.actions.act_url",
+            "target": "self",
+            "url": self.get_portal_url(),
+        }
+
+    def _inverse_partner_id(self):
+        for rec in self:
+            if not rec.invoice_partner_id:
+                rec.invoice_partner_id = rec.partner_id.address_get(["invoice"])[
+                    "invoice"
+                ]
+
+    def _get_related_invoices(self):
+        self.ensure_one()
+
+        invoices = (
+            self.env["account.move.line"]
+            .search(
+                [
+                    (
+                        "contract_line_id",
+                        "in",
+                        self.contract_line_ids.ids,
+                    )
+                ]
+            )
+            .mapped("move_id")
+        )
+        # we are forced to always search for this for not losing possible <=v11
+        # generated invoices
+        invoices |= self.env["account.move"].search([("old_contract_id", "=", self.id)])
+        return invoices
+
+    def _get_computed_currency(self):
+        """Helper method for returning the theoretical computed currency."""
+        self.ensure_one()
+        currency = self.env["res.currency"]
+        if any(self.contract_line_ids.mapped("automatic_price")):
+            # Use pricelist currency
+            currency = (
+                self.pricelist_id.currency_id
+                or self.partner_id.with_company(
+                    self.company_id
+                ).property_product_pricelist.currency_id
+            )
+        return currency or self.journal_id.currency_id or self.company_id.currency_id
+
+    @api.depends(
+        "manual_currency_id",
+        "pricelist_id",
+        "partner_id",
+        "journal_id",
+        "company_id",
+    )
+    def _compute_currency_id(self):
+        for rec in self:
+            if rec.manual_currency_id:
+                rec.currency_id = rec.manual_currency_id
+            else:
+                rec.currency_id = rec._get_computed_currency()
+
+    def _inverse_currency_id(self):
+        """If the currency is different from the computed one, then save it
+        in the manual field.
+        """
+        for rec in self:
+            if rec._get_computed_currency() != rec.currency_id:
+                rec.manual_currency_id = rec.currency_id
+            else:
+                rec.manual_currency_id = False
+
+    def _compute_invoice_count(self):
+        for rec in self:
+            rec.invoice_count = len(rec._get_related_invoices())
+
+    def action_show_invoices(self):
+        self.ensure_one()
+        tree_view = self.env.ref("account.view_invoice_tree", raise_if_not_found=False)
+        form_view = self.env.ref("account.view_move_form", raise_if_not_found=False)
+        action = {
+            "type": "ir.actions.act_window",
+            "name": "Invoices",
+            "res_model": "account.move",
+            "view_mode": "tree,kanban,form,calendar,pivot,graph,activity",
+            "domain": [("id", "in", self._get_related_invoices().ids)],
+        }
+        if tree_view and form_view:
+            action["views"] = [(tree_view.id, "tree"), (form_view.id, "form")]
+        return action
+
+    @api.depends("contract_line_ids.date_end")
+    def _compute_date_end(self):
+        for contract in self:
+            contract.date_end = False
+            date_end = contract.contract_line_ids.mapped("date_end")
+            if date_end and all(date_end):
+                contract.date_end = max(date_end)
+
+    @api.depends(
+        "contract_line_ids.recurring_next_date",
+        "contract_line_ids.is_canceled",
+    )
+    def _compute_recurring_next_date(self):
+        for contract in self:
+            recurring_next_date = contract.contract_line_ids.filtered(
+                lambda l: (
+                    l.recurring_next_date
+                    and not l.is_canceled
+                    and (not l.display_type or l.is_recurring_note)
+                )
+            ).mapped("recurring_next_date")
+            # we give priority to computation from date_start if modified
+            if (
+                contract._origin
+                and contract._origin.date_start != contract.date_start
+                or not recurring_next_date
+            ):
+                super(ContractContract, contract)._compute_recurring_next_date()
+            else:
+                contract.recurring_next_date = min(recurring_next_date)
+
+    @api.depends("contract_line_ids.create_invoice_visibility")
+    def _compute_create_invoice_visibility(self):
+        for contract in self:
+            contract.create_invoice_visibility = any(
+                contract.contract_line_ids.mapped("create_invoice_visibility")
+            )
+
+    @api.onchange("contract_template_id")
+    def _onchange_contract_template_id(self):
+        """Update the contract fields with that of the template.
+
+        Take special consideration with the `contract_line_ids`,
+        which must be created using the data from the contract lines. Cascade
+        deletion ensures that any errant lines that are created are also
+        deleted.
+        """
+        contract_template_id = self.contract_template_id
+        if not contract_template_id:
+            return
+        for field_name, field in contract_template_id._fields.items():
+            if field.name == "contract_line_ids":
+                lines = self._convert_contract_lines(contract_template_id)
+                self.contract_line_ids += lines
+            elif not any(
+                (
+                    field.compute,
+                    field.related,
+                    field.automatic,
+                    field.readonly,
+                    field.company_dependent,
+                    field.name in self.NO_SYNC,
+                )
+            ):
+                if self.contract_template_id[field_name]:
+                    self[field_name] = self.contract_template_id[field_name]
+
+    @api.onchange("partner_id", "company_id")
+    def _onchange_partner_id(self):
+        partner = (
+            self.partner_id
+            if not self.company_id
+            else self.partner_id.with_company(self.company_id)
+        )
+        self.pricelist_id = partner.property_product_pricelist.id
+        self.fiscal_position_id = partner.env[
+            "account.fiscal.position"
+        ].get_fiscal_position(partner.id)
+        if self.contract_type == "purchase":
+            self.payment_term_id = partner.property_supplier_payment_term_id
+        else:
+            self.payment_term_id = partner.property_payment_term_id
+        self.invoice_partner_id = self.partner_id.address_get(["invoice"])["invoice"]
+        return {
+            "domain": {
+                "invoice_partner_id": [
+                    "|",
+                    ("id", "parent_of", self.partner_id.id),
+                    ("id", "child_of", self.partner_id.id),
+                ]
+            }
+        }
+
+    def _convert_contract_lines(self, contract):
+        self.ensure_one()
+        new_lines = self.env["contract.line"]
+        contract_line_model = self.env["contract.line"]
+        for contract_line in contract.contract_line_ids:
+            vals = contract_line._convert_to_write(contract_line.read()[0])
+            # Remove template link field
+            vals.pop("contract_template_id", False)
+            vals["date_start"] = fields.Date.context_today(contract_line)
+            vals["recurring_next_date"] = fields.Date.context_today(contract_line)
+            new_lines += contract_line_model.new(vals)
+        new_lines._onchange_is_auto_renew()
+        return new_lines
+
+    def _prepare_invoice(self, date_invoice, journal=None):
+        """Prepare in a Form the values for the generated invoice record.
+
+        :return: A tuple with the vals dictionary and the Form with the
+          preloaded values for being used in lines.
+        """
+        self.ensure_one()
+        if not journal:
+            journal = (
+                self.journal_id
+                if self.journal_id.type == self.contract_type
+                else self.env["account.journal"].search(
+                    [
+                        ("type", "=", self.contract_type),
+                        ("company_id", "=", self.company_id.id),
+                    ],
+                    limit=1,
+                )
+            )
+        if not journal:
+            raise ValidationError(
+                _("Please define a %s journal for the company '%s'.")
+                % (self.contract_type, self.company_id.name or "")
+            )
+        invoice_type = "out_invoice"
+        if self.contract_type == "purchase":
+            invoice_type = "in_invoice"
+        move_form = Form(
+            self.env["account.move"]
+            .with_company(self.company_id)
+            .with_context(default_move_type=invoice_type)
+        )
+        move_form.partner_id = self.invoice_partner_id
+        if self.payment_term_id:
+            move_form.invoice_payment_term_id = self.payment_term_id
+        if self.fiscal_position_id:
+            move_form.fiscal_position_id = self.fiscal_position_id
+        invoice_vals = move_form._values_to_save(all_fields=True)
+        invoice_vals.update(
+            {
+                "ref": self.code,
+                "company_id": self.company_id.id,
+                "currency_id": self.currency_id.id,
+                "invoice_date": date_invoice,
+                "journal_id": journal.id,
+                "invoice_origin": self.name,
+                "user_id": self.user_id.id,
+            }
+        )
+        return invoice_vals, move_form
+
+    def action_contract_send(self):
+        self.ensure_one()
+        template = self.env.ref("contract.email_contract_template", False)
+        compose_form = self.env.ref("mail.email_compose_message_wizard_form")
+        ctx = dict(
+            default_model="contract.contract",
+            default_res_id=self.id,
+            default_use_template=bool(template),
+            default_template_id=template and template.id or False,
+            default_composition_mode="comment",
+        )
+        return {
+            "name": _("Compose Email"),
+            "type": "ir.actions.act_window",
+            "view_mode": "form",
+            "res_model": "mail.compose.message",
+            "views": [(compose_form.id, "form")],
+            "view_id": compose_form.id,
+            "target": "new",
+            "context": ctx,
+        }
+
+    @api.model
+    def _get_contracts_to_invoice_domain(self, date_ref=None):
+        """
+        This method builds the domain to use to find all
+        contracts (contract.contract) to invoice.
+        :param date_ref: optional reference date to use instead of today
+        :return: list (domain) usable on contract.contract
+        """
+        domain = []
+        if not date_ref:
+            date_ref = fields.Date.context_today(self)
+        domain.extend([("recurring_next_date", "<=", date_ref)])
+        return domain
+
+    def _get_lines_to_invoice(self, date_ref):
+        """
+        This method fetches and returns the lines to invoice on the contract
+        (self), based on the given date.
+        :param date_ref: date used as reference date to find lines to invoice
+        :return: contract lines (contract.line recordset)
+        """
+        self.ensure_one()
+
+        def can_be_invoiced(contract_line):
+            return (
+                not contract_line.is_canceled
+                and contract_line.recurring_next_date
+                and contract_line.recurring_next_date <= date_ref
+            )
+
+        lines2invoice = previous = self.env["contract.line"]
+        current_section = current_note = False
+        for line in self.contract_line_ids:
+            if line.display_type == "line_section":
+                current_section = line
+            elif line.display_type == "line_note" and not line.is_recurring_note:
+                if line.note_invoicing_mode == "with_previous_line":
+                    if previous in lines2invoice:
+                        lines2invoice |= line
+                    current_note = False
+                elif line.note_invoicing_mode == "with_next_line":
+                    current_note = line
+            elif line.is_recurring_note or not line.display_type:
+                if can_be_invoiced(line):
+                    if current_section:
+                        lines2invoice |= current_section
+                        current_section = False
+                    if current_note:
+                        lines2invoice |= current_note
+                    lines2invoice |= line
+                    current_note = False
+            previous = line
+        return lines2invoice.sorted()
+
+    def _prepare_recurring_invoices_values(self, date_ref=False):
+        """
+        This method builds the list of invoices values to create, based on
+        the lines to invoice of the contracts in self.
+        !!! The date of next invoice (recurring_next_date) is updated here !!!
+        :return: list of dictionaries (invoices values)
+        """
+        invoices_values = []
+        for contract in self:
+            if not date_ref:
+                date_ref = contract.recurring_next_date
+            if not date_ref:
+                # this use case is possible when recurring_create_invoice is
+                # called for a finished contract
+                continue
+            contract_lines = contract._get_lines_to_invoice(date_ref)
+            if not contract_lines:
+                continue
+            invoice_vals, move_form = contract._prepare_invoice(date_ref)
+            invoice_vals["invoice_line_ids"] = []
+            for line in contract_lines:
+                invoice_line_vals = line._prepare_invoice_line(move_form=move_form)
+                if invoice_line_vals:
+                    # Allow extension modules to return an empty dictionary for
+                    # nullifying line
+                    invoice_vals["invoice_line_ids"].append((0, 0, invoice_line_vals))
+            invoices_values.append(invoice_vals)
+            # Force the recomputation of journal items
+            del invoice_vals["line_ids"]
+            contract_lines._update_recurring_next_date()
+        return invoices_values
+
+    def recurring_create_invoice(self):
+        """
+        This method triggers the creation of the next invoices of the contracts
+        even if their next invoicing date is in the future.
+        """
+        invoice = self._recurring_create_invoice()
+        if invoice:
+            self.message_post(
+                body=_(
+                    "Contract manually invoiced: "
+                    '<a href="#" data-oe-model="%s" data-oe-id="%s">Invoice'
+                    "</a>"
+                )
+                % (invoice._name, invoice.id)
+            )
+        return invoice
+
+    @api.model
+    def _invoice_followers(self, invoices):
+        invoice_create_subtype = self.env.ref(
+            "contract.mail_message_subtype_invoice_created"
+        )
+        for item in self:
+            partner_ids = item.message_follower_ids.filtered(
+                lambda x: invoice_create_subtype in x.subtype_ids
+            ).mapped("partner_id")
+            if partner_ids:
+                (invoices & item._get_related_invoices()).message_subscribe(
+                    partner_ids=partner_ids.ids
+                )
+
+    def _recurring_create_invoice(self, date_ref=False):
+        invoices_values = self._prepare_recurring_invoices_values(date_ref)
+        moves = self.env["account.move"].create(invoices_values)
+        self._invoice_followers(moves)
+        self._compute_recurring_next_date()
+        return moves
+
+    @api.model
+    def cron_recurring_create_invoice(self, date_ref=None):
+        if not date_ref:
+            date_ref = fields.Date.context_today(self)
+        domain = self._get_contracts_to_invoice_domain(date_ref)
+        invoices = self.env["account.move"]
+        # Invoice by companies, so assignation emails get correct context
+        companies_to_invoice = self.read_group(domain, ["company_id"], ["company_id"])
+        for row in companies_to_invoice:
+            contracts_to_invoice = self.search(row["__domain"]).with_context(
+                allowed_company_ids=[row["company_id"][0]]
+            )
+            invoices |= contracts_to_invoice._recurring_create_invoice(date_ref)
+        return invoices
+
+    def action_terminate_contract(self):
+        self.ensure_one()
+        context = {"default_contract_id": self.id}
+        return {
+            "type": "ir.actions.act_window",
+            "name": _("Terminate Contract"),
+            "res_model": "contract.contract.terminate",
+            "view_mode": "form",
+            "target": "new",
+            "context": context,
+        }
+
+    def _terminate_contract(
+        self, terminate_reason_id, terminate_comment, terminate_date
+    ):
+        self.ensure_one()
+        if not self.env.user.has_group("contract.can_terminate_contract"):
+            raise UserError(_("You are not allowed to terminate contracts."))
+        self.contract_line_ids.filtered("is_stop_allowed").stop(terminate_date)
+        self.write(
+            {
+                "is_terminated": True,
+                "terminate_reason_id": terminate_reason_id.id,
+                "terminate_comment": terminate_comment,
+                "terminate_date": terminate_date,
+            }
+        )
+        return True
+
+    def action_cancel_contract_termination(self):
+        self.ensure_one()
+        self.write(
+            {
+                "is_terminated": False,
+                "terminate_reason_id": False,
+                "terminate_comment": False,
+                "terminate_date": False,
+            }
+        )

contract/models/contract_line_constraints.py

@@ -0,0 +1,429 @@
+# Copyright 2018 ACSONE SA/NV.
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+import itertools
+from collections import namedtuple
+
+from odoo.fields import Date
+
+Criteria = namedtuple(
+    "Criteria",
+    [
+        "when",  # Contract line relatively to today (BEFORE, IN, AFTER)
+        "has_date_end",  # Is date_end set on contract line (bool)
+        "has_last_date_invoiced",  # Is last_date_invoiced set on contract line
+        "is_auto_renew",  # Is is_auto_renew set on contract line (bool)
+        "has_successor",  # Is contract line has_successor (bool)
+        "predecessor_has_successor",
+        # Is contract line predecessor has successor (bool)
+        # In almost of the cases
+        # contract_line.predecessor.successor == contract_line
+        # But at cancel action,
+        # contract_line.predecessor.successor == False
+        # This is to permit plan_successor on predecessor
+        # If contract_line.predecessor.successor != False
+        # and contract_line is canceled, we don't allow uncancel
+        # else we re-link contract_line and its predecessor
+        "canceled",  # Is contract line canceled (bool)
+    ],
+)
+Allowed = namedtuple(
+    "Allowed",
+    ["plan_successor", "stop_plan_successor", "stop", "cancel", "uncancel"],
+)
+
+
+def _expand_none(criteria):
+    variations = []
+    for attribute, value in criteria._asdict().items():
+        if value is None:
+            if attribute == "when":
+                variations.append(["BEFORE", "IN", "AFTER"])
+            else:
+                variations.append([True, False])
+        else:
+            variations.append([value])
+    return itertools.product(*variations)
+
+
+def _add(matrix, criteria, allowed):
+    """ Expand None values to True/False combination """
+    for c in _expand_none(criteria):
+        matrix[c] = allowed
+
+
+CRITERIA_ALLOWED_DICT = {
+    Criteria(
+        when="BEFORE",
+        has_date_end=True,
+        has_last_date_invoiced=False,
+        is_auto_renew=True,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=True,
+        stop=True,
+        cancel=True,
+        uncancel=False,
+    ),
+    Criteria(
+        when="BEFORE",
+        has_date_end=True,
+        has_last_date_invoiced=False,
+        is_auto_renew=False,
+        has_successor=True,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=False,
+        stop=True,
+        cancel=True,
+        uncancel=False,
+    ),
+    Criteria(
+        when="BEFORE",
+        has_date_end=True,
+        has_last_date_invoiced=False,
+        is_auto_renew=False,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=True,
+        stop_plan_successor=True,
+        stop=True,
+        cancel=True,
+        uncancel=False,
+    ),
+    Criteria(
+        when="BEFORE",
+        has_date_end=False,
+        has_last_date_invoiced=False,
+        is_auto_renew=False,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=True,
+        stop=True,
+        cancel=True,
+        uncancel=False,
+    ),
+    Criteria(
+        when="IN",
+        has_date_end=True,
+        has_last_date_invoiced=False,
+        is_auto_renew=True,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=True,
+        stop=True,
+        cancel=True,
+        uncancel=False,
+    ),
+    Criteria(
+        when="IN",
+        has_date_end=True,
+        has_last_date_invoiced=False,
+        is_auto_renew=False,
+        has_successor=True,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=False,
+        stop=True,
+        cancel=True,
+        uncancel=False,
+    ),
+    Criteria(
+        when="IN",
+        has_date_end=True,
+        has_last_date_invoiced=False,
+        is_auto_renew=False,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=True,
+        stop_plan_successor=True,
+        stop=True,
+        cancel=True,
+        uncancel=False,
+    ),
+    Criteria(
+        when="IN",
+        has_date_end=False,
+        has_last_date_invoiced=False,
+        is_auto_renew=False,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=True,
+        stop=True,
+        cancel=True,
+        uncancel=False,
+    ),
+    Criteria(
+        when="BEFORE",
+        has_date_end=True,
+        has_last_date_invoiced=True,
+        is_auto_renew=True,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=True,
+        stop=True,
+        cancel=False,
+        uncancel=False,
+    ),
+    Criteria(
+        when="BEFORE",
+        has_date_end=True,
+        has_last_date_invoiced=True,
+        is_auto_renew=False,
+        has_successor=True,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=False,
+        stop=True,
+        cancel=False,
+        uncancel=False,
+    ),
+    Criteria(
+        when="BEFORE",
+        has_date_end=True,
+        has_last_date_invoiced=True,
+        is_auto_renew=False,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=True,
+        stop_plan_successor=True,
+        stop=True,
+        cancel=False,
+        uncancel=False,
+    ),
+    Criteria(
+        when="BEFORE",
+        has_date_end=False,
+        has_last_date_invoiced=True,
+        is_auto_renew=False,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=True,
+        stop=True,
+        cancel=False,
+        uncancel=False,
+    ),
+    Criteria(
+        when="IN",
+        has_date_end=True,
+        has_last_date_invoiced=True,
+        is_auto_renew=True,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=True,
+        stop=True,
+        cancel=False,
+        uncancel=False,
+    ),
+    Criteria(
+        when="IN",
+        has_date_end=True,
+        has_last_date_invoiced=True,
+        is_auto_renew=False,
+        has_successor=True,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=False,
+        stop=True,
+        cancel=False,
+        uncancel=False,
+    ),
+    Criteria(
+        when="IN",
+        has_date_end=True,
+        has_last_date_invoiced=True,
+        is_auto_renew=False,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=True,
+        stop_plan_successor=True,
+        stop=True,
+        cancel=False,
+        uncancel=False,
+    ),
+    Criteria(
+        when="IN",
+        has_date_end=False,
+        has_last_date_invoiced=True,
+        is_auto_renew=False,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=True,
+        stop=True,
+        cancel=False,
+        uncancel=False,
+    ),
+    Criteria(
+        when="AFTER",
+        has_date_end=True,
+        has_last_date_invoiced=None,
+        is_auto_renew=True,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=False,
+        stop=True,
+        cancel=False,
+        uncancel=False,
+    ),
+    Criteria(
+        when="AFTER",
+        has_date_end=True,
+        has_last_date_invoiced=None,
+        is_auto_renew=False,
+        has_successor=True,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=False,
+        stop=False,
+        cancel=False,
+        uncancel=False,
+    ),
+    Criteria(
+        when="AFTER",
+        has_date_end=True,
+        has_last_date_invoiced=None,
+        is_auto_renew=False,
+        has_successor=False,
+        predecessor_has_successor=None,
+        canceled=False,
+    ): Allowed(
+        plan_successor=True,
+        stop_plan_successor=False,
+        stop=True,
+        cancel=False,
+        uncancel=False,
+    ),
+    Criteria(
+        when=None,
+        has_date_end=None,
+        has_last_date_invoiced=None,
+        is_auto_renew=None,
+        has_successor=None,
+        predecessor_has_successor=False,
+        canceled=True,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=False,
+        stop=False,
+        cancel=False,
+        uncancel=True,
+    ),
+    Criteria(
+        when=None,
+        has_date_end=None,
+        has_last_date_invoiced=None,
+        is_auto_renew=None,
+        has_successor=None,
+        predecessor_has_successor=True,
+        canceled=True,
+    ): Allowed(
+        plan_successor=False,
+        stop_plan_successor=False,
+        stop=False,
+        cancel=False,
+        uncancel=False,
+    ),
+}
+criteria_allowed_dict = {}
+
+for c in CRITERIA_ALLOWED_DICT:
+    _add(criteria_allowed_dict, c, CRITERIA_ALLOWED_DICT[c])
+
+
+def compute_when(date_start, date_end):
+    today = Date.today()
+    if today < date_start:
+        return "BEFORE"
+    if date_end and today > date_end:
+        return "AFTER"
+    return "IN"
+
+
+def compute_criteria(
+    date_start,
+    date_end,
+    has_last_date_invoiced,
+    is_auto_renew,
+    successor_contract_line_id,
+    predecessor_contract_line_id,
+    is_canceled,
+):
+    return Criteria(
+        when=compute_when(date_start, date_end),
+        has_date_end=bool(date_end),
+        has_last_date_invoiced=bool(has_last_date_invoiced),
+        is_auto_renew=is_auto_renew,
+        has_successor=bool(successor_contract_line_id),
+        predecessor_has_successor=bool(
+            predecessor_contract_line_id.successor_contract_line_id
+        ),
+        canceled=is_canceled,
+    )
+
+
+def get_allowed(
+    date_start,
+    date_end,
+    has_last_date_invoiced,
+    is_auto_renew,
+    successor_contract_line_id,
+    predecessor_contract_line_id,
+    is_canceled,
+):
+    criteria = compute_criteria(
+        date_start,
+        date_end,
+        has_last_date_invoiced,
+        is_auto_renew,
+        successor_contract_line_id,
+        predecessor_contract_line_id,
+        is_canceled,
+    )
+    if criteria in criteria_allowed_dict:
+        return criteria_allowed_dict[criteria]
+    return False

contract/models/contract_modification.py

@@ -0,0 +1,41 @@
+# Copyright 2020 Tecnativa - Víctor Martínez
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+
+
+class ContractModification(models.Model):
+
+    _name = "contract.modification"
+    _description = "Contract Modification"
+    _order = "date desc"
+
+    date = fields.Date(required=True, string="Date")
+    description = fields.Text(required=True, string="Description")
+    contract_id = fields.Many2one(
+        string="Contract",
+        comodel_name="contract.contract",
+        required=True,
+        ondelete="cascade",
+        index=True,
+    )
+    sent = fields.Boolean(
+        string="Sent",
+        default=False,
+    )
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        records = super().create(vals_list)
+        if not self.env.context.get("bypass_modification_send"):
+            records.check_modification_ids_need_sent()
+        return records
+
+    def write(self, vals):
+        res = super().write(vals)
+        if not self.env.context.get("bypass_modification_send"):
+            self.check_modification_ids_need_sent()
+        return res
+
+    def check_modification_ids_need_sent(self):
+        self.mapped("contract_id")._modification_mail_send()

contract/models/contract_recurrency_mixin.py

@@ -0,0 +1,237 @@
+# Copyright 2018 ACSONE SA/NV.
+# Copyright 2020 Tecnativa - Pedro M. Baeza
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from dateutil.relativedelta import relativedelta
+
+from odoo import api, fields, models
+
+
+class ContractRecurrencyBasicMixin(models.AbstractModel):
+    _name = "contract.recurrency.basic.mixin"
+    _description = "Basic recurrency mixin for abstract contract models"
+
+    recurring_rule_type = fields.Selection(
+        [
+            ("daily", "Day(s)"),
+            ("weekly", "Week(s)"),
+            ("monthly", "Month(s)"),
+            ("monthlylastday", "Month(s) last day"),
+            ("quarterly", "Quarter(s)"),
+            ("semesterly", "Semester(s)"),
+            ("yearly", "Year(s)"),
+        ],
+        default="monthly",
+        string="Recurrence",
+        help="Specify Interval for automatic invoice generation.",
+    )
+    recurring_invoicing_type = fields.Selection(
+        [("pre-paid", "Pre-paid"), ("post-paid", "Post-paid")],
+        default="pre-paid",
+        string="Invoicing type",
+        help=(
+            "Specify if the invoice must be generated at the beginning "
+            "(pre-paid) or end (post-paid) of the period."
+        ),
+    )
+    recurring_invoicing_offset = fields.Integer(
+        compute="_compute_recurring_invoicing_offset",
+        string="Invoicing offset",
+        help=(
+            "Number of days to offset the invoice from the period end "
+            "date (in post-paid mode) or start date (in pre-paid mode)."
+        ),
+    )
+    recurring_interval = fields.Integer(
+        default=1,
+        string="Invoice Every",
+        help="Invoice every (Days/Week/Month/Year)",
+    )
+    date_start = fields.Date(string="Date Start")
+    recurring_next_date = fields.Date(string="Date of Next Invoice")
+
+    @api.depends("recurring_invoicing_type", "recurring_rule_type")
+    def _compute_recurring_invoicing_offset(self):
+        for rec in self:
+            method = self._get_default_recurring_invoicing_offset
+            rec.recurring_invoicing_offset = method(
+                rec.recurring_invoicing_type, rec.recurring_rule_type
+            )
+
+    @api.model
+    def _get_default_recurring_invoicing_offset(
+        self, recurring_invoicing_type, recurring_rule_type
+    ):
+        if (
+            recurring_invoicing_type == "pre-paid"
+            or recurring_rule_type == "monthlylastday"
+        ):
+            return 0
+        else:
+            return 1
+
+
+class ContractRecurrencyMixin(models.AbstractModel):
+    _inherit = "contract.recurrency.basic.mixin"
+    _name = "contract.recurrency.mixin"
+    _description = "Recurrency mixin for contract models"
+
+    date_start = fields.Date(default=lambda self: fields.Date.context_today(self))
+    recurring_next_date = fields.Date(
+        compute="_compute_recurring_next_date", store=True, readonly=False, copy=True
+    )
+    date_end = fields.Date(string="Date End", index=True)
+    next_period_date_start = fields.Date(
+        string="Next Period Start",
+        compute="_compute_next_period_date_start",
+    )
+    next_period_date_end = fields.Date(
+        string="Next Period End",
+        compute="_compute_next_period_date_end",
+    )
+    last_date_invoiced = fields.Date(
+        string="Last Date Invoiced", readonly=True, copy=False
+    )
+
+    @api.depends("next_period_date_start")
+    def _compute_recurring_next_date(self):
+        for rec in self.filtered("next_period_date_start"):
+            rec.recurring_next_date = self.get_next_invoice_date(
+                rec.next_period_date_start,
+                rec.recurring_invoicing_type,
+                rec.recurring_invoicing_offset,
+                rec.recurring_rule_type,
+                rec.recurring_interval,
+                max_date_end=rec.date_end,
+            )
+
+    @api.depends("last_date_invoiced", "date_start", "date_end")
+    def _compute_next_period_date_start(self):
+        for rec in self:
+            if rec.last_date_invoiced:
+                next_period_date_start = rec.last_date_invoiced + relativedelta(days=1)
+            else:
+                next_period_date_start = rec.date_start
+            if rec.date_end and next_period_date_start > rec.date_end:
+                next_period_date_start = False
+            rec.next_period_date_start = next_period_date_start
+
+    @api.depends(
+        "next_period_date_start",
+        "recurring_invoicing_type",
+        "recurring_invoicing_offset",
+        "recurring_rule_type",
+        "recurring_interval",
+        "date_end",
+        "recurring_next_date",
+    )
+    def _compute_next_period_date_end(self):
+        for rec in self:
+            rec.next_period_date_end = self.get_next_period_date_end(
+                rec.next_period_date_start,
+                rec.recurring_rule_type,
+                rec.recurring_interval,
+                max_date_end=rec.date_end,
+                next_invoice_date=rec.recurring_next_date,
+                recurring_invoicing_type=rec.recurring_invoicing_type,
+                recurring_invoicing_offset=rec.recurring_invoicing_offset,
+            )
+
+    @api.model
+    def get_relative_delta(self, recurring_rule_type, interval):
+        """Return a relativedelta for one period.
+
+        When added to the first day of the period,
+        it gives the first day of the next period.
+        """
+        if recurring_rule_type == "daily":
+            return relativedelta(days=interval)
+        elif recurring_rule_type == "weekly":
+            return relativedelta(weeks=interval)
+        elif recurring_rule_type == "monthly":
+            return relativedelta(months=interval)
+        elif recurring_rule_type == "monthlylastday":
+            return relativedelta(months=interval, day=1)
+        elif recurring_rule_type == "quarterly":
+            return relativedelta(months=3 * interval)
+        elif recurring_rule_type == "semesterly":
+            return relativedelta(months=6 * interval)
+        else:
+            return relativedelta(years=interval)
+
+    @api.model
+    def get_next_period_date_end(
+        self,
+        next_period_date_start,
+        recurring_rule_type,
+        recurring_interval,
+        max_date_end,
+        next_invoice_date=False,
+        recurring_invoicing_type=False,
+        recurring_invoicing_offset=False,
+    ):
+        """Compute the end date for the next period.
+
+        The next period normally depends on recurrence options only.
+        It is however possible to provide it a next invoice date, in
+        which case this method can adjust the next period based on that
+        too. In that scenario it required the invoicing type and offset
+        arguments.
+        """
+        if not next_period_date_start:
+            return False
+        if max_date_end and next_period_date_start > max_date_end:
+            # start is past max date end: there is no next period
+            return False
+        if not next_invoice_date:
+            # regular algorithm
+            next_period_date_end = (
+                next_period_date_start
+                + self.get_relative_delta(recurring_rule_type, recurring_interval)
+                - relativedelta(days=1)
+            )
+        else:
+            # special algorithm when the next invoice date is forced
+            if recurring_invoicing_type == "pre-paid":
+                next_period_date_end = (
+                    next_invoice_date
+                    - relativedelta(days=recurring_invoicing_offset)
+                    + self.get_relative_delta(recurring_rule_type, recurring_interval)
+                    - relativedelta(days=1)
+                )
+            else:  # post-paid
+                next_period_date_end = next_invoice_date - relativedelta(
+                    days=recurring_invoicing_offset
+                )
+        if max_date_end and next_period_date_end > max_date_end:
+            # end date is past max_date_end: trim it
+            next_period_date_end = max_date_end
+        return next_period_date_end
+
+    @api.model
+    def get_next_invoice_date(
+        self,
+        next_period_date_start,
+        recurring_invoicing_type,
+        recurring_invoicing_offset,
+        recurring_rule_type,
+        recurring_interval,
+        max_date_end,
+    ):
+        next_period_date_end = self.get_next_period_date_end(
+            next_period_date_start,
+            recurring_rule_type,
+            recurring_interval,
+            max_date_end=max_date_end,
+        )
+        if not next_period_date_end:
+            return False
+        if recurring_invoicing_type == "pre-paid":
+            recurring_next_date = next_period_date_start + relativedelta(
+                days=recurring_invoicing_offset
+            )
+        else:  # post-paid
+            recurring_next_date = next_period_date_end + relativedelta(
+                days=recurring_invoicing_offset
+            )
+        return recurring_next_date

contract/models/contract_tag.py

@@ -0,0 +1,17 @@
+# Copyright 2019 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class ContractTag(models.Model):
+
+    _name = "contract.tag"
+    _description = "Contract Tag"
+
+    name = fields.Char(required=True)
+    company_id = fields.Many2one(
+        "res.company",
+        string="Company",
+        default=lambda self: self.env.company.id,
+    )

contract/models/contract_template.py

@@ -0,0 +1,22 @@
+# Copyright 2004-2010 OpenERP SA
+# Copyright 2014 Angel Moya <angel.moya@domatix.com>
+# Copyright 2015 Pedro M. Baeza <pedro.baeza@tecnativa.com>
+# Copyright 2016-2018 Carlos Dauden <carlos.dauden@tecnativa.com>
+# Copyright 2016-2017 LasLabs Inc.
+# Copyright 2018 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class ContractTemplate(models.Model):
+    _name = "contract.template"
+    _inherit = "contract.abstract.contract"
+    _description = "Contract Template"
+
+    contract_line_ids = fields.One2many(
+        comodel_name="contract.template.line",
+        inverse_name="contract_id",
+        copy=True,
+        string="Contract template lines",
+    )

contract/models/contract_template_line.py

@@ -0,0 +1,23 @@
+# Copyright 2004-2010 OpenERP SA
+# Copyright 2014 Angel Moya <angel.moya@domatix.com>
+# Copyright 2015 Pedro M. Baeza <pedro.baeza@tecnativa.com>
+# Copyright 2016-2018 Carlos Dauden <carlos.dauden@tecnativa.com>
+# Copyright 2016-2017 LasLabs Inc.
+# Copyright 2018 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class ContractTemplateLine(models.Model):
+    _name = "contract.template.line"
+    _inherit = "contract.abstract.contract.line"
+    _description = "Contract Template Line"
+    _order = "sequence,id"
+
+    contract_id = fields.Many2one(
+        string="Contract",
+        comodel_name="contract.template",
+        required=True,
+        ondelete="cascade",
+    )

contract/models/contract_terminate_reason.py

@@ -0,0 +1,15 @@
+# Copyright 2020 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class ContractTerminateReason(models.Model):
+
+    _name = "contract.terminate.reason"
+    _description = "Contract Termination Reason"
+
+    name = fields.Char(required=True)
+    terminate_comment_required = fields.Boolean(
+        string="Require a termination comment", default=True
+    )

contract/models/res_company.py

@@ -0,0 +1,17 @@
+# Copyright 2019 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class ResCompany(models.Model):
+
+    _inherit = "res.company"
+
+    create_new_line_at_contract_line_renew = fields.Boolean(
+        string="Create New Line At Contract Line Renew",
+        help="If checked, a new line will be generated at contract line renew "
+        "and linked to the original one as successor. The default "
+        "behavior is to extend the end date of the contract by a new "
+        "subscription period",
+    )

contract/models/res_config_settings.py

@@ -0,0 +1,19 @@
+# Copyright 2019 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class ResConfigSettings(models.TransientModel):
+
+    _inherit = "res.config.settings"
+
+    create_new_line_at_contract_line_renew = fields.Boolean(
+        related="company_id.create_new_line_at_contract_line_renew",
+        readonly=False,
+        string="Create New Line At Contract Line Renew",
+        help="If checked, a new line will be generated at contract line renew "
+        "and linked to the original one as successor. The default "
+        "behavior is to extend the end date of the contract by a new "
+        "subscription period",
+    )

contract/models/res_partner.py

@@ -0,0 +1,80 @@
+# Copyright 2017 Carlos Dauden <carlos.dauden@tecnativa.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from ast import literal_eval
+
+from odoo import fields, models
+
+
+class ResPartner(models.Model):
+    _inherit = "res.partner"
+
+    sale_contract_count = fields.Integer(
+        string="Sale Contracts",
+        compute="_compute_contract_count",
+    )
+    purchase_contract_count = fields.Integer(
+        string="Purchase Contracts",
+        compute="_compute_contract_count",
+    )
+    contract_ids = fields.One2many(
+        comodel_name="contract.contract",
+        inverse_name="partner_id",
+        string="Contracts",
+    )
+
+    def _get_partner_contract_domain(self):
+        self.ensure_one()
+        return [("partner_id", "child_of", self.ids)]
+
+    def _compute_contract_count(self):
+        contract_model = self.env["contract.contract"]
+        fetch_data = contract_model.read_group(
+            self._get_partner_contract_domain(),
+            ["partner_id", "contract_type"],
+            ["partner_id", "contract_type"],
+            lazy=False,
+        )
+        result = [
+            [data["partner_id"][0], data["contract_type"], data["__count"]]
+            for data in fetch_data
+        ]
+        for partner in self:
+            partner_child_ids = partner.child_ids.ids + partner.ids
+            partner.sale_contract_count = sum(
+                [r[2] for r in result if r[0] in partner_child_ids and r[1] == "sale"]
+            )
+            partner.purchase_contract_count = sum(
+                [
+                    r[2]
+                    for r in result
+                    if r[0] in partner_child_ids and r[1] == "purchase"
+                ]
+            )
+
+    def act_show_contract(self):
+        """This opens contract view
+        @return: the contract view
+        """
+        self.ensure_one()
+        contract_type = self._context.get("contract_type")
+
+        res = self._get_act_window_contract_xml(contract_type)
+        action_context = {k: v for k, v in self.env.context.items() if k != "group_by"}
+        action_context["default_partner_id"] = self.id
+        action_context["default_pricelist_id"] = self.property_product_pricelist.id
+        res["context"] = action_context
+        res["domain"] = (
+            literal_eval(res["domain"]) + self._get_partner_contract_domain()
+        )
+        return res
+
+    def _get_act_window_contract_xml(self, contract_type):
+        if contract_type == "purchase":
+            return self.env["ir.actions.act_window"]._for_xml_id(
+                "contract.action_supplier_contract"
+            )
+        else:
+            return self.env["ir.actions.act_window"]._for_xml_id(
+                "contract.action_customer_contract"
+            )

contract/readme/CONFIGURE.rst

@@ -0,0 +1,4 @@
+To view discount field in contract line, you need to set *Discount on lines* in
+user access rights.
+
+Contracts can be viewed on the portal (list and detail) if the user logged into the portal is a follower of the contract.

contract/readme/CONTRIBUTORS.rst

@@ -0,0 +1,16 @@
+* Angel Moya <angel.moya@domatix.com>
+* Dave Lasley <dave@laslabs.com>
+* Miquel Raïch <miquel.raich@eficent.com>
+* Souheil Bejaoui <souheil.bejaoui@acsone.eu>
+* Thomas Binsfeld <thomas.binsfeld@acsone.eu>
+* Guillaume Vandamme <guillaume.vandamme@acsone.eu>
+* Raphaël Reverdy <raphael.reverdy@akretion.com>
+
+* `Tecnativa <https://www.tecnativa.com>`_:
+
+    * Pedro M. Baeza
+    * Carlos Dauden
+    * Vicent Cubells
+    * Rafael Blasco
+    * Víctor Martínez
+* Iván Antón <ozono@ozonomultimedia.com>

contract/readme/DESCRIPTION.rst

@@ -0,0 +1,6 @@
+This module enables contracts management with recurring
+invoicing functions. Also you can print and send by email contract report.
+
+It works for customer contract and supplier contracts.
+
+Contracts are shown in portal.

contract/readme/ROADMAP.rst

@@ -0,0 +1,2 @@
+* Recover states and others functional fields in Contracts.
+* Add recurrence flag at template level.

contract/readme/USAGE.rst

@@ -0,0 +1,31 @@
+#. Contracts are in Invoicing -> Customers -> Customer and Invoicing -> Vendors -> Supplier Contracts
+#. When creating a contract, fill fields for selecting the invoicing parameters:
+
+   * a journal
+   * a price list (optional)
+
+#. And add the lines to be invoiced with:
+
+   * the product with a description, a quantity and a price
+   * the recurrence parameters: interval (days, weeks, months, months last day or years),
+     start date, date of next invoice (automatically computed, can be modified) and end date (optional)
+   * auto-price, for having a price automatically obtained from the price list
+   * #START# or #END# in the description field to display the start/end date of
+     the invoiced period in the invoice line description
+   * pre-paid (invoice at period start) or post-paid (invoice at start of next period)
+
+#. The "Generate Recurring Invoices from Contracts" cron runs daily to generate the invoices.
+   If you are in debug mode, you can click on the invoice creation button.
+#. The *Show recurring invoices* shortcut on contracts shows all invoices created from the
+   contract.
+#. The contract report can be printed from the Print menu
+#. The contract can be sent by email with the *Send by Email* button
+#. Contract templates can be created from the Configuration -> Contracts -> Contract Templates menu.
+   They allow to define default journal, price list and lines when creating a contract.
+   To use it, just select the template on the contract and fields will be filled automatically.
+
+* Contracts appear in portal to following users in every contract:
+
+.. image:: ../static/src/screenshots/portal-my.png
+.. image:: ../static/src/screenshots/portal-list.png
+.. image:: ../static/src/screenshots/portal-detail.png