There is no single place to look up documentation for our stack. This card includes some hints where you can...

makandra is responsible for maintaining about 75 Ruby projects. These projects use a large number of different versions for Ruby...

Rails is our web framework. Goals Be able to write a simple Rails application. Understand how Rails talks to the...

Understand why we test: Low defect rate without a QA department. Customer acceptance testing can concentrate on new features...

Learn to create test data effectively using factories. Decouple tests by having each test start with an empty database...

Basic validations Read the Rails Guide on ActiveRecord Validations. You should have an overview which kinds of validations are built...

Understand at least the following CSS concepts: Classes Selecting elements for styling Basic styling (color, typography, spacing)

JavaScript code can access and manipulate the browser's DOM tree. Using JavaScript we can add interactive behavior to our...

In this card we will learn to write code that scales with a large number of database records. We will...

Read the following chapters from The Pragmatic Programmer, anniversary edition (in our library): Chapter 1, Topic 3: Software Entropy...

Understand what Memoization is and when it can be useful. Understand the @variable ||= computation pattern. Learn how to use...

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...

Understand the differences between git diff and git diff --staged (or git diff --cached) Understand the difference between git...

What is a Cookie? Google it if you do not know. How are cookies transferred between your browser and...

Web security basics Einführung in die Web Security 🇩🇪 provides essentials for the topic of this card. Read following chapters:

Authentication is all about being able to verify the identity of a user in the context of our application.

Watch Solving bizarre authorization requirements with Rails Read the Consul README Read the assignable_values README Understand how Consul...

Understand how nested attributes appear in the params. See how the Rails form helpers encode the names of nested...

Read (or re-read) the following chapters from our book Growing Rails Applications in Practice (it’s in our...

While working on a Rails application, your code base will grow a collection of different file types including: Ruby (business...