[12.0][ADD] account_document_reversal

account_document_reversal/models/account_payment.py

@@ -0,0 +1,40 @@
+# Copyright 2019 Ecosoft Co., Ltd (http://ecosoft.co.th/)
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html)
+from odoo import api, models, _
+from odoo.exceptions import ValidationError
+
+
+class AccountPayment(models.Model):
+    _name = 'account.payment'
+    _inherit = ['account.payment', 'account.document.reversal']
+
+    @api.multi
+    def cancel(self):
+        """ If cancel method is to reverse, use document reversal wizard """
+        cancel_reversal = all(
+            self.mapped('move_line_ids.move_id.journal_id.is_cancel_reversal'))
+        states = self.mapped('state')
+        if cancel_reversal and 'draft' not in states:
+            return self.reverse_document_wizard()
+        return super().cancel()
+
+    @api.multi
+    def action_document_reversal(self, date=None, journal_id=None):
+        """ Reverse all moves related to this payment + set state to cancel """
+        # Check document state
+        if 'cancelled' in self.mapped('state'):
+            raise ValidationError(
+                _('You are trying to cancel the cancelled document'))
+        move_lines = self.mapped('move_line_ids')
+        moves = move_lines.mapped('move_id')
+        # Set all moves to unreconciled
+        move_lines.filtered(lambda x:
+                            x.account_id.reconcile).remove_move_reconcile()
+        # Important to remove relation with move.line before reverse
+        move_lines.write({'payment_id': False})
+        # Create reverse entries
+        moves.reverse_moves(date, journal_id)
+        # Set state cancelled and unlink with account.move
+        self.write({'move_name': False,
+                    'state': 'cancelled'})
+        return True