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A system test drives a real, actual browser, clicking buttons and filling in forms exactly like a real user would, and Capybara is the ...

Storing a user's password in plain text is a serious security mistake, and Rails gives you has_secure_password, a real, built-in ...

In this video, we'll build a simple RSpec test suite for a Rails application and see the actual output in action. Code walkthrough ...

Ruby is the programming language Rails itself is written in, and before touching any Rails code at all, you need Ruby installed ...

A fresh database is completely empty, but you often need real starter data, an admin user, some sample categories, to actually ...

A Rails app running only on your own laptop isn't reachable by anyone else, deploying puts it on a real server the whole internet ...

A model isn't just a Ruby class, it needs a real matching database table, and Rails generates both together with one command.

Every controller action automatically renders a matching view, but you can also render something different, or wrap every page in ...

Action Mailer is Rails' built-in system for sending real emails, and it works almost exactly like a controller and view, just for ...

Some tasks, sending an email, resizing an image, are too slow to make a user wait for while a page loads. Active Job is Rails' ...

Some relationships are more complex than a simple has_many, like an article having many tags, and a tag belonging to many ...

A hash stores data as key-value pairs instead of a plain ordered list, so you look values up by a meaningful name instead of a ...

Action Cable is Rails' built-in framework for WebSockets, letting your server push real, live updates to a page without the user ever ...

Stimulus is the lightweight JavaScript framework that pairs with Hotwire, adding small bits of real interactivity, like toggling a menu, ...

Active Storage is Rails' built-in system for attaching real files, images, PDFs, anything, to your models, without you writing any ...

RSpec is the most popular alternative testing framework in the Rails community, favored for its readable, English-like syntax.

Deleting a record is permanent, so Rails makes it easy to both perform the deletion and ask the user to confirm it first. In this video ...

form_with is Rails' modern helper for generating real HTML forms, and it automatically wires up the correct URL and HTTP ...

You've already been using blocks with each and times without a formal explanation, that do...end or curly-brace chunk of code is ...

Ruby is a genuinely object-oriented language, meaning almost everything, including your own custom data, can be modeled as a ...