[IMP] - show related sale orders in contract form

product_contract/__manifest__.py

@@ -10,7 +10,11 @@
     'author': "LasLabs, " "ACSONE SA/NV, " "Odoo Community Association (OCA)",
     'website': 'https://github.com/oca/contract',
     'depends': ['product', 'contract_sale'],
-    'data': ['views/product_template.xml', 'views/sale_order.xml'],
+    'data': [
+        'views/contract.xml',
+        'views/product_template.xml',
+        'views/sale_order.xml'
+    ],
     'installable': True,
     'application': False,
 }

product_contract/models/__init__.py

@@ -2,6 +2,7 @@
 # Copyright 2017 LasLabs Inc.
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
+from . import contract
 from . import contract_line
 from . import product_template
 from . import sale_order

product_contract/models/contract.py

@@ -0,0 +1,35 @@
+# 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.tools.translate import _
+
+
+class AccountAnalyticAccount(models.Model):
+    _name = 'account.analytic.account'
+    _inherit = 'account.analytic.account'
+
+    sale_order_count = fields.Integer(compute="_compute_sale_order_count")
+
+    @api.depends('recurring_invoice_line_ids')
+    def _compute_sale_order_count(self):
+        for rec in self:
+            rec.sale_order_count = len(
+                rec.recurring_invoice_line_ids.mapped(
+                    'sale_order_line_id.order_id'
+                )
+            )
+
+    @api.multi
+    def action_view_sales_orders(self):
+        self.ensure_one()
+        orders = self.recurring_invoice_line_ids.mapped(
+            'sale_order_line_id.order_id'
+        )
+        return {
+            "name": _("Sales Orders"),
+            "view_mode": "tree,form",
+            "res_model": "sale.order",
+            "type": "ir.actions.act_window",
+            "domain": [("id", "in", orders.ids)],
+        }

product_contract/views/contract.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright 2018 ACSONE SA/NV.
+    License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+-->
+<odoo>
+
+    <record id="account_analytic_account_recurring_form_form"
+            model="ir.ui.view">
+        <field name="model">account.analytic.account</field>
+        <field name="inherit_id"
+               ref="contract.account_analytic_account_recurring_form_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//div[@name='button_box']" position="inside">
+                <button class="oe_stat_button" name="action_view_sales_orders"
+                        type="object" icon="fa-edit"
+                        attrs="{'invisible': [('sale_order_count', '=', 0)]}">
+                    <div class="o_field_widget o_stat_info">
+                        <span class="o_stat_value">
+                            <field name="sale_order_count"/>
+                        </span>
+                        <span class="o_stat_text">Sale Orders</span>
+                    </div>
+                </button>
+            </xpath>
+        </field>
+    </record>
+
+</odoo>