Ruby on Rails React with Rails using react-rails gem Using react_rails within your application


React.js builds

You can pick which React.js build (development, production, with or without add-ons) to serve in each environment by adding a config. Here are the defaults:

# config/environments/development.rb
MyApp::Application.configure do
  config.react.variant = :development

# config/environments/production.rb
MyApp::Application.configure do
  config.react.variant = :production

To include add-ons, use this config:

MyApp::Application.configure do
  config.react.addons = true # defaults to false

After restarting your Rails server, //= require react will provide the build of React.js which was specified by the configurations.

react-rails offers a few other options for versions & builds of React.js. See for more info about using the react-source gem or dropping in your own copies of React.js.


After installing react-rails, restart your server. Now, .js.jsx files will be transformed in the asset pipeline.

BabelTransformer options

You can use babel's transformers and custom plugins, and pass options to the babel transpiler adding following configurations:

config.react.jsx_transform_options = {
  blacklist: ['spec.functionName', 'validation.react', 'strict'], # default options
  optional: ["transformerName"],  # pass extra babel options
  whitelist: ["useStrict"] # even more options[enter link description here][1]

Under the hood, react-rails uses ruby-babel-transpiler, for transformation.