[UPD] add method to add counter

models/acc_priority_group.py

@@ -118,18 +118,20 @@ class AccPriorityGroup(models.Model):
             ]
         )
         for counter in counters_to_affect:
+            res.add_counter(counter_id=counter)
+        return res
+
+    def add_counter(self, counter_id):
         self.env["acc.priority.group.counter"].create(
             {
-                    "acc_priority_group_id": res.id,
-                    "acc_operation_id": res.acc_operation_id.id,
-                    "acc_counter_id": counter.id,
-                    "counter_street": counter.street,
-                    "counter_owner": counter.partner_id.name,
+                "acc_priority_group_id": self.id,
+                "acc_operation_id": self.acc_operation_id.id,
+                "acc_counter_id": counter_id.id,
+                "counter_street": counter_id.street,
+                "counter_owner": counter_id.partner_id.name,
             }
         )
 
-        return res
-
     # ------------------------------------------------------
     # Actions
     # ------------------------------------------------------