[8.0] add date invoice on merge wizard

Author: Cédric Pigeon

account_invoice_merge/invoice.py

@@ -56,7 +56,7 @@ def _get_first_invoice_fields(self, invoice):
         }
 
     @api.multi
-    def do_merge(self, keep_references=True):
+    def do_merge(self, keep_references=True, date_invoice=False):
         """
         To merge similar type of account invoices.
         Invoices will only be merged if:
@@ -165,6 +165,8 @@ def make_key(br, fields):
             invoice_data['invoice_line'] = [
                 (0, 0, value) for value in
                 invoice_data['invoice_line'].itervalues()]
+            if date_invoice:
+                invoice_data['date_invoice'] = date_invoice
             # create the new invoice
             newinvoice = self.with_context(is_merge=True).create(invoice_data)
             invoices_info.update({newinvoice.id: old_ids})

account_invoice_merge/wizard/invoice_merge.py

@@ -29,6 +29,7 @@ class invoice_merge(models.TransientModel):
     keep_references = fields.Boolean('Keep references'
                                      ' from original invoices',
                                      default=True)
+    date_invoice = fields.Date('Invoice Date')
 
     @api.model
     def _dirty_check(self):
@@ -99,7 +100,8 @@ def merge_invoices(self):
         aw_obj = self.env['ir.actions.act_window']
         ids = self.env.context.get('active_ids', [])
         invoices = inv_obj.browse(ids)
-        allinvoices = invoices.do_merge(keep_references=self.keep_references)
+        allinvoices = invoices.do_merge(keep_references=self.keep_references,
+                                        date_invoice=self.date_invoice)
         xid = {
             'out_invoice': 'action_invoice_tree1',
             'out_refund': 'action_invoice_tree3',

account_invoice_merge/wizard/invoice_merge_view.xml

@@ -22,6 +22,7 @@ Lines will only be merged if:<br/>
                     </group>
                     <group name="options">
                         <field name="keep_references"/>
+                        <field name="date_invoice"/>
                     </group>
                     <footer>
                         <button name="merge_invoices" string="Merge Invoices"