Agile Web Development with Rails 5.1

We cover:

• Replacing Rails’ testing framework with RSpec
• Using Slim for HTML templates instead of ERB
• Serving CSS with Webpack
• Post-processing CSS with cssnext

Chapter 24Customizing and Extending Rails

As you’ve come to learn, Rails provides an answer for almost every question you have about building a modern web application. It provides the basics for handling requests, accessing a database, writing user interfaces, and running tests. It does this by having a tightly integrated design, which is often referred to as Rails being “opinionated software.”

This tight coupling comes at a price. If, for example, the way Rails manages CSS doesn’t meet the needs of your project, you could be in trouble. Or, if you prefer to write your tests in a different ...