Refactor

app/controllers/application_controller.rb

@@ -20,6 +20,7 @@ class ApplicationController < ActionController::Base
     end
   end
 
+  private
   def configure_permitted_parameters
     devise_parameter_sanitizer.for(:sign_up).push(:name)
     devise_parameter_sanitizer.for(:account_update).push(:name)

app/models/line_item.rb

@@ -18,7 +18,7 @@ class LineItem < ActiveRecord::Base
   def check_product_stock
     change_square = quantity - quantity_was
     if change_square > product.stock
-      self.errors.add(:quantity, "Product #{product.title} is not enough in stock")
+      self.errors.add(:quantity, "Product #{product.try(:title)} is not enough in stock")
       return false
     end
   end

app/models/order.rb

@@ -7,7 +7,6 @@ class Order < ActiveRecord::Base
   accepts_nested_attributes_for :line_items
 
   def recalculate
-    puts "=================================== #{line_items.inject(0) {|sum, item| sum + item.quantity*item.price }}"
     count = line_items.sum(:quantity)
     self.update_columns(
       item_count: count,

app/services/cart_service.rb

@@ -27,7 +27,6 @@ class CartService
   end
 
   def self.update_cart(current_order, params)
-
     if current_order.update_attributes(params)
       return true, "Update cart successfully"
     else

app/services/vacuum_aws_service.rb

@@ -5,9 +5,9 @@ class VacuumAwsService
     request = Vacuum.new(options[:country_code])
 
     request.configure(
-      aws_access_key_id: 'AKIAJ77C4CTZOP7TUVWQ',
-      aws_secret_access_key: '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',
-      associate_tag: 'zigexn6400-22'
+      aws_access_key_id: ENV['aws_access_key_id'],
+      aws_secret_access_key: ENV['aws_secret_access_key'],
+      associate_tag: ENV['associate_tag']
     )
 
     request.item_search(