[ADD] Add mail attach existing attachment module

mail_attach_attachment/README.rst

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+.. image:: https://img.shields.io/badge/licence-AGPL--3-blue.svg
+    :alt: License: AGPL-3
+
+Mail Attach Attachment
+======================
+
+This module was written to add the possibility to add attachments located on 
+the object by sending it by email with the mail compose message wizard
+
+Installation
+============
+
+To install this module, you need to:
+
+ * Click on install
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/social/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
+`here <https://github.com/OCA/social/issues/new?body=module:%20mail_attach_attachment%0Aversion:%208.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Credits
+=======
+
+Contributors
+------------
+
+* Adrien Peiffer <adrien.peiffer@acsone.eu>
+
+Maintainer
+----------
+
+.. image:: http://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 http://odoo-community.org.

mail_attach_attachment/__init__.py

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+# -*- coding: utf-8 -*-
+from . import wizard

mail_attach_attachment/__openerp__.py

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+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#     This file is part of mail_attach_attachment,
+#     an Odoo module.
+#
+#     Copyright (c) 2015 ACSONE SA/NV (<http://acsone.eu>)
+#
+#     mail_attach_attachment is free software:
+#     you can redistribute it and/or modify it under the terms of the GNU
+#     Affero General Public License as published by the Free Software
+#     Foundation,either version 3 of the License, or (at your option) any
+#     later version.
+#
+#     mail_attach_attachment is distributed
+#     in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+#     even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+#     PURPOSE.  See the GNU Affero General Public License for more details.
+#
+#     You should have received a copy of the GNU Affero General Public License
+#     along with mail_attach_attachment.
+#     If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+{
+    'name': "Mail Attach Attachment",
+    'summary': """
+        Adding attachment on the object by sending this one""",
+    'author': "ACSONE SA/NV,Odoo Community Association (OCA)",
+    'website': "http://acsone.eu",
+    'category': 'Uncategorized',
+    'version': '8.0.0.0.1',
+    'license': 'AGPL-3',
+    'depends': [
+        'mail',
+    ],
+    'data': [
+        'wizard/mail_compose_message_view.xml',
+    ],
+}

mail_attach_attachment/tests/__init__.py

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+# -*- coding: utf-8 -*-
+
+from . import test_mail_attach_attachment

mail_attach_attachment/tests/test_mail_attach_attachment.py

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+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#     This file is part of mail_attach_attachment,
+#     an Odoo module.
+#
+#     Copyright (c) 2015 ACSONE SA/NV (<http://acsone.eu>)
+#
+#     mail_attach_attachment is free software:
+#     you can redistribute it and/or modify it under the terms of the GNU
+#     Affero General Public License as published by the Free Software
+#     Foundation,either version 3 of the License, or (at your option) any
+#     later version.
+#
+#     mail_attach_attachment is distributed
+#     in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+#     even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+#     PURPOSE.  See the GNU Affero General Public License for more details.
+#
+#     You should have received a copy of the GNU Affero General Public License
+#     along with mail_attach_attachment.
+#     If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+
+from openerp.tests import common
+
+
+class TestAttachAttachment(common.TransactionCase):
+
+    def setUp(self):
+        super(TestAttachAttachment, self).setUp()
+        self.partner_obj = self.env['res.partner']
+        self.partner_01 = self.env.ref('base.res_partner_1')
+
+    def test_send_email_attachment(self):
+        attach1 = self.env['ir.attachment'].create({
+            'name': 'Attach1', 'datas_fname': 'Attach1',
+            'datas': 'bWlncmF0aW9uIHRlc3Q=',
+            'res_model': 'res.partner', 'res_id': self.partner_01.id})
+        vals = {'model': 'res.partner',
+                'partner_ids': [(6, 0, [self.partner_01.id])],
+                'res_id': self.partner_01.id,
+                'object_attachment_ids': [(6, 0, [attach1.id])]
+                }
+        mail = self.env['mail.compose.message'].create(vals)
+        values = mail.get_mail_values(mail, [self.partner_01.id])
+        self.assertTrue(attach1.id in
+                        values[self.partner_01.id]['attachment_ids'])

mail_attach_attachment/wizard/__init__.py

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+# -*- coding: utf-8 -*-
+from . import mail_compose_message

mail_attach_attachment/wizard/mail_compose_message.py

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+# -*- coding: utf-8 -*-
+##############################################################################
+#
+#     This file is part of mail_attach_attachment,
+#     an Odoo module.
+#
+#     Copyright (c) 2015 ACSONE SA/NV (<http://acsone.eu>)
+#
+#     mail_attach_attachment is free software:
+#     you can redistribute it and/or modify it under the terms of the GNU
+#     Affero General Public License as published by the Free Software
+#     Foundation,either version 3 of the License, or (at your option) any
+#     later version.
+#
+#     mail_attach_attachment is distributed
+#     in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+#     even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+#     PURPOSE.  See the GNU Affero General Public License for more details.
+#
+#     You should have received a copy of the GNU Affero General Public License
+#     along with mail_attach_attachment.
+#     If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+
+from openerp import models, fields, api
+
+
+class MailComposeMessage(models.TransientModel):
+    _inherit = 'mail.compose.message'
+
+    @api.model
+    def default_get(self, fields_list):
+        res = super(MailComposeMessage, self).default_get(fields_list)
+        if res.get('res_id') and res.get('model') and \
+                res.get('composition_mode', '') != 'mass_mail' and\
+                not res.get('can_attach_attachment'):
+            res['can_attach_attachment'] = True
+        return res
+
+    can_attach_attachment = fields.Boolean(string='Can Attach Attachment')
+    object_attachment_ids = fields.Many2many(
+        comodel_name='ir.attachment',
+        relation='mail_compose_message_ir_attachments_object_rel',
+        column1='wizard_id', column2='attachment_id', string='Attachments')
+
+    @api.model
+    def get_mail_values(self, wizard, res_ids):
+        res = super(MailComposeMessage, self).get_mail_values(wizard, res_ids)
+        if wizard.object_attachment_ids.ids and wizard.model and\
+                len(res_ids) == 1:
+            for res_id in res_ids:
+                if not res[res_id].get('attachment_ids'):
+                    res[res_id]['attachment_ids'] = []
+                res[res_id]['attachment_ids'].extend(
+                    wizard.object_attachment_ids.ids)
+        return res

mail_attach_attachment/wizard/mail_compose_message_view.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<openerp>
+    <data noupdate="0">
+        <record model="ir.ui.view" id="email_compose_message_wizard_inherit_form">
+            <field name="name">mail.compose.message.form (mail_attach_attachment)</field>
+            <field name="model">mail.compose.message</field>
+            <field name="inherit_id" ref="mail.email_compose_message_wizard_form"/>
+            <field name="arch" type="xml">
+                <xpath expr="//field[@name='attachment_ids']" position="after">
+                    <field name="can_attach_attachment" invisible="1"/>
+                    <div attrs="{'invisible': [('can_attach_attachment', '=', False)]}">
+                        <br />
+                        <field name="object_attachment_ids" widget="many2many_checkboxes" domain="[('res_model', '=', model), ('res_id', '=', res_id)]" />
+                    </div>
+                </xpath>
+            </field>
+        </record>
+    </data>
+</openerp>