got movies_checked_out_count to be passed in api response not using s…

…erializer

app/controllers/customers_controller.rb

@@ -1,9 +1,9 @@
 class CustomersController < ApplicationController
 def index
   customers = Customer.all
-  render json: customers, status: :ok
-  # render(
-  #   json: customers.as_json(only: [:id, :name, :registered_at, :address, :city, :state, :postal_code, :phone, :movies_checked_out_count])
-  # )
+  # render json: customers, status: :ok
+  render(
+    json: customers.as_json(only: [:id, :name, :registered_at, :address, :city, :state, :postal_code, :phone], methods: [ :movies_checked_out_count])
+  )
 end
 end

app/models/customer.rb

@@ -1,7 +1,6 @@
 class Customer < ApplicationRecord
+  # include ActiveModel::Serialization
 
-  include ActiveModel::Serialization
-
   has_many :rentals
 
   validates :name, presence: true

app/serializers/customer_serializer.rb

@@ -1,3 +1,3 @@
-class CustomerSerializer < ActiveModel::Serializer
-  attributes :id, :name, :registered_at, :address, :city, :state, :postal_code, :phone, :movies_checked_out_count
-end
+# class CustomerSerializer < ActiveModel::Serializer
+#   attributes :id, :name, :registered_at, :address, :city, :state, :postal_code, :phone, :movies_checked_out_count
+# end