add admin user depart records

app/models/product.rb

@@ -57,11 +57,7 @@ class Product < ActiveRecord::Base
                 end
             end
         end
-        if SIZE_ENUM.length ==0
-            return []
-        else
-            return SIZE_ENUM
-        end
+        return SIZE_ENUM
     end
 
     def get_color_enum
@@ -76,12 +72,7 @@ class Product < ActiveRecord::Base
                 end
             end
         end
-        if COLOR_ENUM.length ==0
-            return []
-        else
-
-            return COLOR_ENUM
-        end
+        return COLOR_ENUM
     end
     IMG_STORE_PATH = "product"