Deal with cross origins

Gemfile

@@ -18,6 +18,7 @@ gem 'omniauth-reddit', :git => 'git://github.com/jackdempsey/omniauth-reddit.git
 gem 'active_model_serializers'
 gem 'paper_trail'
 gem 'paperclip', '~> 4.3'
+gem 'rack-cors'
 
 # AUTHORIZATION
 gem 'pundit'

Gemfile.lock

@@ -145,6 +145,7 @@ GEM
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
     rack (1.6.4)
+    rack-cors (0.4.0)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.4)
@@ -253,6 +254,7 @@ DEPENDENCIES
   puma
   pundit
   quiet_assets
+  rack-cors
   rails (= 4.2.4)
   rails-erd
   rails_12factor

config/application.rb

@@ -11,25 +11,17 @@ require "action_view/railtie"
 require "sprockets/railtie"
 # require "rails/test_unit/railtie"
 
-# Require the gems listed in Gemfile, including any gems
-# you've limited to :test, :development, or :production.
 Bundler.require(*Rails.groups)
 
 module DbzdokkanRails
   class Application < Rails::Application
-    # Settings in config/environments/* take precedence over those specified here.
-    # Application configuration should go into files in config/initializers
-    # -- all .rb files in that directory are automatically loaded.
-
-    # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
-    # Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.
-    # config.time_zone = 'Central Time (US & Canada)'
-
-    # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
-    # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
-    # config.i18n.default_locale = :de
-
-    # Do not swallow errors in after_commit/after_rollback callbacks.
     config.active_record.raise_in_transactional_callbacks = true
+
+    config.middleware.insert_before 0, "Rack::Cors" do
+      allow do
+        origins '*'
+        resource '*', headers: :any, methods: [:get]
+      end
+    end
   end
 end