Port module account_invoice_del_attachment_cancel to v8/newAPI

account_invoice_del_attachment_cancel/__init__.py

@@ -0,0 +1,23 @@
+# -*- encoding: utf-8 -*-
+##############################################################################
+#
+#    Account Invoice Del Attachment Cancel module for OpenERP
+#    Copyright (C) 2015 Akretion (http://www.akretion.com)
+#    @author Alexis de Lattre <alexis.delattre@akretion.com>
+#
+#    This program 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.
+#
+#    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+
+from . import account_invoice

account_invoice_del_attachment_cancel/__openerp__.py

@@ -0,0 +1,44 @@
+# -*- encoding: utf-8 -*-
+##############################################################################
+#
+#    Account Invoice Del Attachment Cancel module for Odoo
+#    Copyright (C) 2015 Akretion (http://www.akretion.com)
+#    @author Alexis de Lattre <alexis.delattre@akretion.com>
+#
+#    This program 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.
+#
+#    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+
+
+{
+    'name': 'Account Invoice Delete Attachment on Cancel',
+    'version': '0.1',
+    'category': 'Accounting & Finance',
+    'license': 'AGPL-3',
+    'summary': 'Delete the attachment on the invoice when it is set back to draft',
+    'description': """
+Account Invoice Delete Attachment on Cancel
+===========================================
+
+When a customer invoice is validated, on the first generation of the invoice report, a copy of the report is stored as attachment on the invoice. After that, every time a user asks for the Invoice report, it will be taken from the attachment. But, when a customer invoice/refund is cancelled, set back to draft, modified and re-validated, the Invoice report is still the old PDF file, which is often raised as a bug by the users.
+
+With this module, when a customer invoice/refund is set back to draft, the attachment is deleted.
+
+This module has been written by Alexis de Lattre from Akretion <alexis.delattre@akretion.com>.
+    """,
+    'author': 'Akretion',
+    'website': 'http://www.akretion.com',
+    'depends': ['account'],
+    'installable': True,
+}

account_invoice_del_attachment_cancel/account_invoice.py

@@ -0,0 +1,54 @@
+# -*- encoding: utf-8 -*-
+##############################################################################
+#
+#    Account Invoice Del Attachment Cancel module for Odoo
+#    Copyright (C) 2015 Akretion (http://www.akretion.com)
+#    @author Alexis de Lattre <alexis.delattre@akretion.com>
+#
+#    This program 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.
+#
+#    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+##############################################################################
+
+from openerp import models, api, _
+
+
+class AccountInvoice(models.Model):
+    _inherit = 'account.invoice'
+
+    @api.multi
+    def invoice_filename_to_match(self):
+        return 'INV%.pdf'
+
+    @api.multi
+    def action_cancel_draft(self):
+        res = super(AccountInvoice, self).action_cancel_draft()
+        iao = self.env['ir.attachment']
+        for invoice in self:
+            # search for attachments
+            if 'out' in invoice.type:
+                filename_to_match = invoice.invoice_filename_to_match()
+                attachs = iao.search([
+                    ('res_id', '=', invoice.id),
+                    ('res_model', '=', self._name),
+                    ('type', '=', 'binary'),
+                    ('datas_fname', '=like', filename_to_match),
+                    ])
+                if len(attachs) == 1:
+                    # delete attachment
+                    attach = attachs[0]
+                    attach_name = attach.name
+                    attachs.unlink()
+                    invoice.message_post(
+                        _('Attachement %s has been deleted') % attach_name)
+        return res