[IMP] payment, sale_payment: set invoice id in payment transaction form after payment being done from sale order.

Until now invoice_id is filled on the transaction only when we make
payments through invoice. However if we make payments through sale order
then invoice_id is not filled.

This commit fixes that issue. As there is no common point between
sale_payment and account_payment except payment, a void method is added
in payment and an override done in account_payment. That was when both
modules are installed code is correctly triggered.

This commit is related to task ID 1813602. Closes #22746 .

addons/account_payment/models/payment.py

@@ -175,3 +175,10 @@ class PaymentTransaction(models.Model):
         })
 
         return tx
+
+    def _post_process_after_done(self, **kwargs):
+        # set invoice id in payment transaction when payment being done from sale order
+        res = super(PaymentTransaction, self)._post_process_after_done()
+        if kwargs.get('invoice_id'):
+            self.account_invoice_id = kwargs['invoice_id']
+        return res

addons/payment/models/payment_acquirer.py

@@ -684,6 +684,10 @@ class PaymentTransaction(models.Model):
 
         return True
 
+    @api.multi
+    def _post_process_after_done(self, **kwargs):
+        return True
+
     # --------------------------------------------------
     # SERVER2SERVER RELATED METHODS
     # --------------------------------------------------

addons/sale_payment/models/payment.py

@@ -103,6 +103,7 @@ class PaymentTransaction(models.Model):
             created_invoice.with_context(default_currency_id=self.currency_id.id).pay_and_reconcile(self.acquirer_id.journal_id, pay_amount=created_invoice.amount_total)
             if created_invoice.payment_ids:
                 created_invoice.payment_ids[0].payment_transaction_id = self
+            self._post_process_after_done(invoice_id=created_invoice)
         else:
             _logger.warning('<%s> transaction completed, could not auto-generate invoice for %s (ID %s)',
                             self.acquirer_id.provider, self.sale_order_id.name, self.sale_order_id.id)