Allow to get default location by parent category.

This commit refs #13743

product.py

@@ -17,21 +17,31 @@ class Category(metaclass=PoolMeta):
 
     def get_default_location(self, **kwargs):
         pool = Pool()
-        Location = pool.get('stock.product.category.location')
+        CategoryLocation = pool.get('stock.product.category.location')
 
         _domain = self._get_default_location_domain(**kwargs)
-        locations = Location.search(
-            _domain, order=self._get_default_location_order(),
-            limit=2)
-        if locations:
-            return locations[0].location.id
-        return None
+        cat_locations = CategoryLocation.search(
+            _domain, order=self._get_default_location_order())
+        location = None
+
+        if kwargs.get('with_parent', True):
+            for cat_location in cat_locations:
+                if cat_location.category.id == self.id:
+                    location = cat_location.location
+                    break
+
+        if not location and cat_locations:
+            location = cat_locations[0].location
+        return location
 
     def _get_default_location_domain(self, **kwargs):
         _domain = [
-            ('category', '=', self.id),
             ('location.type', '=', kwargs.get('location_type', 'storage'))
         ]
+        if kwargs.get('with_parent', True):
+            _domain.append(('category', 'parent_of', self.id, 'parent'))
+        else:
+            _domain.append(('category', '=', self.id))
         if kwargs.get('warehouse', None):
             _domain.append(('warehouse', '=', kwargs['warehouse'].id))
         return _domain

tests/test_stock_product_category_location.py

@@ -52,6 +52,40 @@ class StockProductCategoryLocationTestCase(ModuleTestCase):
         self.assertEqual(
             cm.exception.message, 'Category and location must be unique.')
 
+    @with_transaction()
+    def test_add_parent_category_default_location(self):
+        """Add the category default location for a warehouse"""
+        pool = Pool()
+        Location = pool.get('stock.location')
+        Category = pool.get('product.category')
+        CatLoc = pool.get('stock.product.category.location')
+
+        storage, = Location.search([('code', '=', 'STO')])
+        storage_new, = Location.create([{
+            'code': 'STO2',
+            'name': 'Storage 2',
+            'type': 'storage',
+            'parent': storage.id
+        }])
+        new_cat, = Category.create([{'name': 'CAT1'}])
+        child_cat, = Category.create([{'name': 'CAT2', 'parent': new_cat.id}])
+        cat_loc_rec = {
+            'category': new_cat.id,
+            'warehouse': storage.parent.id,
+            'location': storage.id
+        }
+        CatLoc.create([cat_loc_rec])
+
+        self.assertEqual(child_cat.get_default_location(), storage)
+
+        CatLoc.create([{
+            'category': child_cat.id,
+            'warehouse': storage_new.warehouse.id,
+            'location': storage_new.id
+        }])
+
+        self.assertEqual(child_cat.get_default_location(), storage_new)
+
 
 def suite():
     suite = trytond.tests.test_tryton.suite()