Configure cors

Gemfile

@@ -29,7 +29,7 @@ gem 'faraday'
 gem 'figaro'
 
 # Use Rack CORS for handling Cross-Origin Resource Sharing (CORS), making cross-origin AJAX possible
-# gem 'rack-cors'
+gem 'rack-cors'
 
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console

Gemfile.lock

@@ -97,6 +97,8 @@ GEM
     puma (3.12.6)
     racc (1.6.0)
     rack (2.2.3)
+    rack-cors (1.1.1)
+      rack (>= 2.0.0)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.6.2)
@@ -192,6 +194,7 @@ DEPENDENCIES
   pg
   pry
   puma (~> 3.11)
+  rack-cors
   rails (~> 5.2.6, >= 5.2.6.2)
   rspec-rails
   rspec_junit_formatter (~> 0.2.3)

config/initializers/cors.rb

@@ -5,12 +5,12 @@
 
 # Read more: https://github.com/cyu/rack-cors
 
-# Rails.application.config.middleware.insert_before 0, Rack::Cors do
-#   allow do
-#     origins 'example.com'
-#
-#     resource '*',
-#       headers: :any,
-#       methods: [:get, :post, :put, :patch, :delete, :options, :head]
-#   end
-# end
+Rails.application.config.middleware.insert_before 0, Rack::Cors do
+  allow do
+    origins 'http://localhost:3000'
+
+    resource '*',
+      headers: :any,
+      methods: [:get, :post, :put, :patch, :delete, :options, :head]
+  end
+end