React installation for Rails using rails react gem

Add react-rails to your Gemfile:

gem 'react-rails'

And install:

bundle install

Next, run the installation script:

rails g react:install

This will:

create a components.js manifest file and a app/assets/javascripts/components/ directory, where you will put your components place the following in your application.js:

//= require react
//= require react_ujs
//= require components