update stock taking form

app/models/inventory_definition.rb

@@ -61,4 +61,21 @@ class InventoryDefinition < ApplicationRecord
         end
      end
   end
+
+  def self.search_by_category(cat_id)
+     @inventory_definitions =   InventoryDefinition.select("inventory_definitions.*,
+                 mi.name as item_name,mii.item_instance_name as instance_name," +
+                 "mi.item_code as item_code,mii.item_instance_code as instance_code," +
+                "mc.name as menu_category_name,mc.id as menu_category_id ")
+                .joins("JOIN menu_item_instances mii ON mii.item_instance_code = inventory_definitions.item_code" +
+                     " JOIN menu_items mi ON mi.id = mii.menu_item_id" +
+                     " JOIN menu_categories mc ON mc.id = mi.menu_category_id ")
+                .where("mc.id=#{cat_id}")
+                .group("mi.menu_category_id,inventory_definitions.item_code")
+                .order("mi.menu_category_id desc")
+
+                
+    
+  end
+
 end