API login/logout with http header token

app/models/dining_facility.rb

@@ -1,6 +1,17 @@
 class DiningFacility < ApplicationRecord
   belongs_to :zone
 
+  default_scope { order('order_by asc') }
+
   scope :active, -> {where(is_active: true)}
 
+  def get_current_booking
+    booking = Booking.where("dining_facility_id = #{self.id} and booking_status ='occupied' and checkin_at between '#{DateTime.now.utc - 5.hours}' and '#{DateTime.now.utc}' and checkout_at is null").limit(1)
+
+    if booking.count > 0 then
+      return booking[0]
+    else
+      return nil
+    end
+  end
 end

app/models/menu_category.rb

@@ -2,9 +2,11 @@ class MenuCategory < ApplicationRecord
   belongs_to :menu
   has_many :children, :class_name => "MenuCategory", foreign_key: "menu_category_id"
   belongs_to :parent, :class_name => "MenuCategory", foreign_key: "menu_category_id", optional: true
-
+  has_many :menu_items
 
   validates_presence_of :name
 
+  default_scope { order('order_by asc') }
+  
 
 end

app/models/menu_item.rb

@@ -1,7 +1,9 @@
 class MenuItem < ApplicationRecord
   belongs_to :menu_category
   has_many :menu_item_instances
-  belongs_to :parent, :class_name => "MenuItem", foreign_key: "menu_item_id"
+  belongs_to :parent, :class_name => "MenuItem", foreign_key: "menu_item_id", :optional => true
   has_many :children, :class_name => "MenuItem", foreign_key: "menu_item_id"
 
+  default_scope { order('item_code asc') }
+
 end