Delete Fix for parent child process in Menu

app/models/menu_item.rb

@@ -1,5 +1,5 @@
 class MenuItem < ApplicationRecord
-  belongs_to :account
+  # belongs_to :account
   belongs_to :menu_category, :optional => true
   has_many :menu_item_instances
   belongs_to :parent, :class_name => "MenuItem", foreign_key: "menu_item_id", :optional => true
@@ -38,4 +38,31 @@ class MenuItem < ApplicationRecord
 
     return nil
   end
+
+  def self.deleteRecursive(menu_item)
+
+    # find the sub menu item of current item
+    sub_menu_items = MenuItem.where("menu_item_id=?",menu_item.id)
+    if sub_menu_items.length != 0
+      sub_menu_items.each do |subitem|    
+        if deleteRecursive(subitem)
+        end
+      end
+      # find the instances of current menu item
+      instances = MenuItemInstance.where("menu_item_id=?",menu_item.id)
+      instances.each do |instance|
+        instance.destroy
+      end 
+      menu_item.destroy
+      return true
+    else
+      instances = MenuItemInstance.where("menu_item_id=?",menu_item.id)
+      instances.each do |instance|
+        instance.destroy
+      end 
+      menu_item.destroy
+      return false
+    end
+
+  end 
 end