Added order and fields depends methods.

party.py

@@ -61,6 +61,11 @@ class PartyWarehouse(ModelSQL, ModelView, ValueMixin):
     warehouse = fields.Many2One('stock.location', "Warehouse",
         domain=[('type', '=', 'warehouse')], ondelete='RESTRICT')
 
+    @classmethod
+    def __setup__(cls):
+        super().__setup__()
+        cls._order.insert(0, ('party', 'ASC'))
+
     @classmethod
     def __register__(cls, module_name):
         pool = Pool()

shipment.py

@@ -23,7 +23,8 @@ class ShipmentInternal(PartyWarehouseMixin, metaclass=PoolMeta):
         },
         depends=['state', 'moves', 'from_location', 'to_location'])
 
-    @fields.depends('party', 'from_location', 'to_location')
+    @fields.depends('party', 'from_location', 'to_location',
+        methods=['_get_party_warehouse_pattern'])
     def on_change_from_location(self):
         if (self.party
                 and self.from_location
@@ -33,7 +34,8 @@ class ShipmentInternal(PartyWarehouseMixin, metaclass=PoolMeta):
             if self.from_location.warehouse != warehouse:
                 self.to_location = warehouse.storage_location
 
-    @fields.depends('party', 'from_location', 'to_location')
+    @fields.depends('party', 'from_location', 'to_location',
+        methods=['_get_party_warehouse_pattern'])
     def on_change_to_location(self):
         if (self.party
                 and self.to_location