add checksum for menu sync

app/controllers/api/restaurant/menu_controller.rb

@@ -4,8 +4,25 @@ class Api::Restaurant::MenuController < Api::ApiController
   # Pull the default menu details and also other available (active) menus
   # Input Params - order_id
   def index
-    @menus = Menu.all
-    # @current_menu = Menu.current_menu
+    param_checksum = params[:checksum]
+    # checksum = File.readlines("public/checksums/menu_json.txt").pop.chomp
+
+    all_menu = Menu.all
+
+    # to hash
+    menu_array = []
+    all_menu.each do |m|
+      menu_array.push(m.to_json(:include => {:menu_categories => { :include => { :menu_items => { :include => [:menu_item_sets, :menu_item_instances => {:include => :menu_instance_item_sets}]} } }}))
+    end            
+                 
+    #export Checksum file generate by md5
+    menu_checksum = Digest::MD5.hexdigest(menu_array.to_json)
+
+    if menu_checksum != param_checksum
+      response.headers['CHECKSUM'] = menu_checksum
+      @menus = all_menu    
+    end
+    # @current_menu = Menu.current_menu    
   end
 
   #Description

app/models/menu_item_attribute.rb

@@ -1,6 +1,6 @@
 class MenuItemAttribute < ApplicationRecord
   validates_presence_of :attribute_type, :name, :value
   def self.collection
-    MenuItemAttribute.select("name, value").map { |e| [e.name, e.value] }
+    MenuItemAttribute.select("name").map { |e| [e.name, e.name] }
   end
 end

app/views/api/restaurant/menu/_menu.json.jbuilder

@@ -17,5 +17,4 @@ if (menu.menu_categories)
       end
     end
   end
-
 end

app/views/api/restaurant/menu/_menu_item.json.jbuilder

@@ -5,14 +5,14 @@ param_count = item.item_attributes.count
 item.item_attributes.each do|attr_id|      
   menu_attr = MenuItemAttribute.find(attr_id)
   if attr_format.count == 0
-    attr_format.push({ type: menu_attr.attribute_type, value: [] })
+    attr_format.push({ type: menu_attr.attribute_type, values: [] })
   end
 
   attr_format.each do |af|
     if menu_attr.attribute_type == af[:type]
-      af[:value].push(menu_attr.value)
+      af[:values].push(menu_attr.name)
     else 
-      new_attr = {type: menu_attr.attribute_type, value: [ menu_attr.value ] }
+      new_attr = {type: menu_attr.attribute_type, values: [ menu_attr.name ] }
       attr_format.push(new_attr) 
     end
     
@@ -29,14 +29,14 @@ param_count = item.item_options.count
 item.item_options.each do|opt|      
   menu_opt = MenuItemOption.find(opt)
   if opt_format.count == 0
-    opt_format.push({ type: menu_opt.option_type, value: [] })
+    opt_format.push({ type: menu_opt.option_type, values: [] })
   end
 
   opt_format.each do |af|
     if menu_opt.option_type == af[:type]
-      af[:value].push(menu_opt.value)
+      af[:values].push(menu_opt.name)
     else 
-      new_attr = {type: menu_opt.option_type, value: [ menu_opt.value ] }
+      new_attr = {type: menu_opt.option_type, values: [ menu_opt.name ] }
       opt_format.push(new_attr) 
     end
     

app/views/api/restaurant/menu/index.json.jbuilder

@@ -1,4 +1,4 @@
-json.array! @menus do |menu|
+menu_json = json.array! @menus do |menu|
   json.id menu.id
   json.name menu.name
   json.valid_days menu.valid_days
@@ -12,3 +12,4 @@ json.array! @menus do |menu|
   #   end
   # end
 end
+