Add number of mandates in partner form (similar to number of bank accounts)

account_banking_mandate/__openerp__.py

@@ -24,6 +24,7 @@
         'views/account_invoice_view.xml',
         'views/account_payment_line.xml',
         'views/res_partner_bank_view.xml',
+        'views/res_partner.xml',
         'views/bank_payment_line_view.xml',
         'views/account_move_line.xml',
         'data/mandate_reference_sequence.xml',

account_banking_mandate/models/__init__.py

@@ -5,6 +5,7 @@ from . import account_payment_method
 from . import account_payment_order
 from . import account_invoice
 from . import res_partner_bank
+from . import res_partner
 from . import account_payment_line
 from . import bank_payment_line
 from . import account_move_line

account_banking_mandate/models/res_partner.py

@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+# © 2016 Akretion (Alexis de Lattre <alexis.delattre@akretion.com>)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from openerp import models, fields, api
+
+
+class ResPartner(models.Model):
+    _inherit = 'res.partner'
+
+    mandate_count = fields.Integer(
+        compute='_compute_mandate_count', string="Number of Mandates",
+        readonly=True)
+
+    @api.multi
+    def _compute_mandate_count(self):
+        mandate_data = self.env['account.banking.mandate'].read_group(
+            [('partner_id', 'in', self.ids)], ['partner_id'], ['partner_id'])
+        mapped_data = dict([
+            (mandate['partner_id'][0], mandate['partner_id_count'])
+            for mandate in mandate_data])
+        for partner in self:
+            partner.mandate_count = mapped_data.get(partner.id, 0)

account_banking_mandate/views/account_banking_mandate_view.xml

@@ -81,6 +81,7 @@
             <filter name="cancel" string="Cancelled" domain="[('state', '=', 'cancel')]" />
             <filter name="expired" string="Expired" domain="[('state', '=', 'expired')]" />
             <group string="Group By" name="groupby">
+                <filter name="state_groupby" string="State" context="{'group_by': 'state'}"/>
                 <filter name="signature_date_groupby" string="Signature Date" context="{'group_by': 'signature_date'}"/>
             </group>
         </search>

account_banking_mandate/views/res_partner.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2016 Akretion (http://www.akretion.com)
+  @author: Alexis de Lattre <alexis.delattre@akretion.com>
+  The licence is in the file __openerp__.py
+-->
+<openerp>
+<data>
+
+<record id="partner_view_buttons" model="ir.ui.view">
+    <field name="name">mandate.res.partner.form</field>
+    <field name="model">res.partner</field>
+    <field name="inherit_id" ref="account.partner_view_buttons"/>
+    <field name="arch" type="xml">
+        <xpath expr="//button[@name='%(base.action_res_partner_bank_account_form)d']" position="after">
+            <button type="action" class="btn-link"
+                    name="%(account_banking_mandate.mandate_action)d"
+                    context="{'search_default_partner_id': active_id, 'default_partner_id': active_id}">
+                <field string="Mandate(s)" name="mandate_count" widget="statinfo"/>
+            </button>
+        </xpath>
+    </field>
+</record>
+
+</data>
+</openerp>