Ruby on Rails 5.1.0 Changes and New Features

Episode #69 by Teacher's Avatar David Kimura


Upcoming features include Yarn/Webpack, System Tests via Capybara, Encrypted Secrets and a bunch of other cool things!
rails beta 12:00


WIth system tests, using Capybara built in, you'll need to download the chromedriver


# Terminal

# Installing yarn brew install node brew install yarn

# Terminal
gem install rails --pre

# For older versions,

rails _5.0.1_ new testapp

# To use webpack

rails new testapp --webpack

# or with a JS Framework

rails new testapp --webpack=vue|angular|react

# To install the JS Framework after creating the app

rails webpacker:install:vue

To have compile the webpack assets, which will install to public/packs/folders

# Terminal
rails webpacker:compile

# Terminal
brew install chromedriver

rails g system_test WelcomeController

# welcome_controllers_test.rb
require "application_system_test_case"

class WelcomeControllersTest < ApplicationSystemTestCase
  test "visiting the index" do
    visit root_url
    assert_selector "h1", text: "Welcome"

# config/environments/development.rb
config.x.webpacker[:dev_server_host] = "http://localhost:8080"

Start webpack-dev-server to serve the assets with webpack. Keep in mind that you will also need the Rails server running as well.

# Terminal

Adding a JS Library to the application via yarn and webpack

# Terminal
yarn add jquery

Not covered in the episode, but you'll also need to add the javascript assets.

# application.js
//= require jquery/dist/jquery