cart creation backend logic is at place / adding items in progress

front-api/models/anonymous_user.rb

@@ -0,0 +1,7 @@
+require 'securerandom'
+
+class AnonymousUser
+  def self.uid
+    SecureRandom.uuid.gsub!('-','')
+  end
+end

front-api/models/cart.rb

@@ -0,0 +1,10 @@
+class Cart < ActiveRecord::Base
+  has_many :item_in_carts
+
+  def self.find_or_create(anonymous_id, user_id)
+    cart = Cart.where(user_id: user_id).where(ordered: false).first
+    cart ||= Cart.where(anonymous_id_string: anonymous_id).where(ordered: false).first
+    safe_user_id = (user_id > 0) ? user_id : nil
+    cart ||= Cart.create!(anonymous_id_string: anonymous_id, user_id: safe_user_id, ordered: false )
+  end
+end

front-api/models/item_in_cart.rb

@@ -0,0 +1,4 @@
+class ItemInCart < ActiveRecord::Base
+  belongs_to :cart 
+  belongs_to :item 
+end