Rails is our web framework. Goals Be able to write a simple Rails application. Understand how Rails talks to the...
Basic validations Read the Rails Guide on ActiveRecord Validations. You should have an overview which kinds of validations are built...
In this card we will learn to write code that scales with a large number of database records. We will...
When your code does not behave as expected, you can use a debugger statement ("breakpoint") at any point in your...
Built-in matchers Get an overview of all the matchers that are built into RSpec. Play with some of...
Read the Rails Guide about Active Record migrations Understand why we never use models in migrations. Checkout the repository...
Learn to treat files as an ActiveRecord attribute type, like :string or :integer Research Look at the README for...
Read (or re-read) the following chapters from our book Growing Rails Applications in Practice (it’s in our...
Rubymonk training Read the following Rubymonk articles: Ruby Primer: Ascent (archived copy) Metaprogramming Ruby (archived copy) Metaprogramming Ruby: Ascent (archived...
Some tasks in a web application are better not done live when a user request a page, but in the...
Resources Rails Guide: Internationalization API Guide to localizing a Rails application Locale-aware helpers in ActionView::Helpers::NumberHelper
For each movie in MovieDB, we want to track which other movie it was inspired by. For...
Rails ships with two separate build pipelines: Sprockets ("asset pipeline") and Webpacker. Webpacker has many more moving parts, but allows...