Gain insights into building applications using Rails Webpacker, Webpack, and TypeScript. Explore Stimulus, React, state management, and communication with servers for richer interactions.

railspostgresssl.tar.gz

introduction/01

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introduction/01_testing

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In this course, you will learn to build a fully-functional application with Rails Webpacker, Webpack, and TypeScript.

To kick things off, you’ll walk through the basics of getting Rails set up to use Webpacker which will serve JavaScript and CSS to the browser. You’ll then get acquainted with Stimulus and React which will help with creating richer interactions.

In the latter half, you’ll work with TypeScript and set up communication between a server. Beyond that, you’ll work through managing state in your Stimulus code, as well as how to test and troubleshoot your application.

By the end of this course, you will be well equipped to create larger, more complex applications that make use of modern tools.

Modern Front-end Development for Rails

In our current code, we are using the `is-hidden` CSS class to denote hidden status, and we are actually hard-coding the class name inside our controller. For a short class name like `is-hidden` that's unlikely to change, it's not really a big deal, but it's often considered a better practice not to tightly couple the class name to the controller and specify the exact CSS classes only in the view. 

Stimulus 2.0 has a mechanism for this, where we can store the class name as a special data attribute. The name of the data attribute has the form `data-<controllerName>-<descriptor>-class`, and the value of the attribute is the name of the CSS class being described---typically you'd use a descriptor that describes the role of the CSS class. These class descriptors are usually added to the same DOM element as the controller.

In our case, we'd augment the controller DOM element with a class data attribute:

Let's now specify the exact CSS classes only in the view as it's a better practice to not tightly couple the class name to the controller.

Stimulus Has Class

Getting Started

Client-side Rails

Stimulus

React

Book Review System Using ReactJS and Ruby on Rails

Cascading Style Sheets

TypeScript

Webpack

Webpacker

Talking to the Server

Managing State in Stimulus Code

Managing State in React

Using Redux to Manage State

Validating Code with Advanced TypeScript

Testing with Cypress

More Testing and Troubleshooting Basics

Appendix

Stimulus Has Class