Cross-Origin Resource Sharing in Ruby on Rails Application

While working in Ruby on Rails application I faced a problem with Cross-Origin Resource Sharing. Here is the configuration below how to sort out this problem:

Rack::Cors provides support for Cross-Origin Resource Sharing

Steps to enable rackcors :

1.add gem to your Gemfile:

gem 'rack-cors'

2.Add below code to config/application.rb

# if you are using Rails 3/4

config.middleware.insert_before 0, "Rack::Cors" do

  allow do

    origins '*'

    resource '*', :headers => :any, :methods => :any

  end

end

# if you are using Rails 5

config.middleware.insert_before 0, Rack::Cors do

  allow do

    origins '*'

    resource '*', headers: :any, methods: :any

  end

end