[FIX] stock, mrp: handle multi method

Commit 84ae731d5d used 'self.code' in a method
called by a multi one. As 'self.code' expect a singleton, the transaction
raise an error in case of multiple records into the recordset

This commit calls the method into a loop on 'self and change its signature
to pass 'code' and be sure its a non multi one

addons/mrp/__init__.py

@@ -14,5 +14,4 @@ def _create_warehouse_data(cr, registry):
     """
     env = api.Environment(cr, SUPERUSER_ID, {})
     warehouse_ids = env['stock.warehouse'].search([('manufacture_pull_id', '=', False)])
-    for warehouse_id in warehouse_ids:
-        warehouse_id.write({'manufacture_to_resupply': True})
+    warehouse_ids.write({'manufacture_to_resupply': True})

addons/mrp/models/stock_warehouse.py

@@ -164,11 +164,11 @@ class StockWarehouse(models.Model):
         })
         return rules
 
-    def _get_locations_values(self, vals):
-        values = super(StockWarehouse, self)._get_locations_values(vals)
+    def _get_locations_values(self, vals, code=False):
+        values = super(StockWarehouse, self)._get_locations_values(vals, code=code)
         def_values = self.default_get(['manufacture_steps'])
         manufacture_steps = vals.get('manufacture_steps', def_values['manufacture_steps'])
-        code = vals.get('code') or self.code
+        code = vals.get('code') or code
         code = code.replace(' ', '').upper()
         values.update({
             'pbm_loc_id': {

addons/stock/models/stock_warehouse.py

@@ -492,12 +492,12 @@ class Warehouse(models.Model):
             else:
                 existing_rule.write({'active': True})
 
-    def _get_locations_values(self, vals):
+    def _get_locations_values(self, vals, code=False):
         """ Update the warehouse locations. """
         def_values = self.default_get(['reception_steps', 'delivery_steps'])
         reception_steps = vals.get('reception_steps', def_values['reception_steps'])
         delivery_steps = vals.get('delivery_steps', def_values['delivery_steps'])
-        code = vals.get('code') or self.code
+        code = vals.get('code') or code
         code = code.replace(' ', '').upper()
         sub_locations = {
             'lot_stock_id': {
@@ -539,8 +539,8 @@ class Warehouse(models.Model):
         In this case, this function will create missing locations in order to
         avoid mistakes during picking types and rules creation.
         """
-        sub_locations = self._get_locations_values(vals)
         for warehouse in self:
+            sub_locations = self._get_locations_values(vals, warehouse.code)
             missing_location = {}
             for location, location_values in sub_locations.items():
                 if not warehouse[location] and location not in vals: