[ADD] partner_contact_lang: Manage language in contacts

partner_contact_lang/README.rst

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+.. image:: https://img.shields.io/badge/licence-AGPL--3-blue.svg
+   :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+   :alt: License: AGPL-3
+
+===========================
+Manage language in contacts
+===========================
+
+Odoo by default propagate language field to the created contacts from their
+form, but it doesn't allow to change it once created.
+
+This module fills this gap, and also provides other facilities for the
+contact language management:
+
+* Put the language of the parent company when the contact doesn't have a
+  language and this parent company is assigned.
+* When the company changes the language, it fills with the same language all
+  the contacts that don't have any.
+
+Usage
+=====
+
+Go to any partner that is a company and has contacts. Click on one contact
+and you will be able to edit the language.
+
+.. image:: https://odoo-community.org/website/image/ir.attachment/5784_f2813bd/datas
+   :alt: Try me on Runbot
+   :target: https://runbot.odoo-community.org/runbot/134/8.0
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues
+<https://github.com/OCA/partner-contact/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.
+
+Credits
+=======
+
+Contributors
+------------
+
+* Pedro M. Baeza <pedro.baeza@tecnativa.com>
+
+Icon
+----
+* Original Odoo icons.
+
+Maintainer
+----------
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: http://odoo-community.org
+
+This module is maintained by the OCA.
+
+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.
+
+To contribute to this module, please visit https://odoo-community.org.

partner_contact_lang/__init__.py

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+# -*- coding: utf-8 -*-
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from . import models

partner_contact_lang/__openerp__.py

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+# -*- coding: utf-8 -*-
+# © 2016 Pedro M. Baeza <pedro.baeza@tecnativa.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+{
+    'name': 'Manage language in contacts',
+    'version': '8.0.1.0.0',
+    'category': 'Partner Management',
+    'license': 'AGPL-3',
+    'author': 'Tecnativa,'
+              'Odoo Community Association (OCA)',
+    'website': 'https://www.tecnativa.com',
+    'depends': [
+        'base',
+    ],
+    'data': [
+        'views/res_partner_view.xml',
+    ],
+    'installable': True
+}

partner_contact_lang/models/__init__.py

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+# -*- coding: utf-8 -*-
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from . import res_partner

partner_contact_lang/models/res_partner.py

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+# -*- coding: utf-8 -*-
+# © 2016 Pedro M. Baeza <pedro.baeza@tecnativa.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from openerp import api, models
+
+
+class ResPartner(models.Model):
+    _inherit = 'res.partner'
+
+    @api.multi
+    def write(self, vals):
+        """Propagate a language change in the partner to the child contacts."""
+        res = super(ResPartner, self).write(vals)
+        if vals.get('lang'):
+            childs = self.search([
+                ('id', 'child_of', self.ids),
+                ('lang', '=', False),
+            ])
+            if childs:
+                childs.write({'lang': vals['lang']})
+        return res
+
+    @api.multi
+    def onchange_address(self, use_parent_address, parent_id):
+        """Change language if the parent company changes and there's no
+        language defined yet"""
+        res = super(ResPartner, self).onchange_address(
+            use_parent_address, parent_id)
+        if parent_id and self.parent_id.id != parent_id and not self.lang:
+            parent = self.browse(parent_id)
+            val = res.setdefault('value', {})
+            val['lang'] = parent.lang
+        return res
+
+    @api.multi
+    @api.onchange('lang')
+    def onchange_lang(self):
+        if self.lang:
+            childs = self.child_ids.filtered(lambda x: not x.lang)
+            for child in childs:
+                child.lang = self.lang