update

app/controllers/settings/simple_menu_items_controller.rb

@@ -6,7 +6,7 @@ class Settings::SimpleMenuItemsController < ApplicationController
   def index
     @settings_menu_items = @category.menu_items.page(params[:page]).per(10)
   end
- 
+
   # GET /settings/menu_items/1
   # GET /settings/menu_items/1.json
   def show

app/models/menu_item.rb

@@ -5,7 +5,7 @@ class MenuItem < ApplicationRecord
   belongs_to :parent, :class_name => "MenuItem", foreign_key: "menu_item_id", :optional => true
   has_many :children, :class_name => "MenuItem", foreign_key: "menu_item_id"
 
-  validates_presence_of :item_code, :type, :min_qty, :taxable, :min_selectable_item, :max_selectable_item
+  validates_presence_of :item_code, :name, :type, :min_qty, :taxable, :min_selectable_item, :max_selectable_item
 
   default_scope { order('item_code asc') }