Ruby is the programming language we use on the backend. Goals After finishing this lesson you should be able to...
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...
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...
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...
As developers we are dealing with many tasks every week. We need a system to organize ourselves. Goals After completing...
Learn Enough Command Line to be Dangerous (it's in our library => Google Drive) CLI tricks every developer should...
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...
A common task in web applications is to add client-side JavaScript behavior to existing HTML elements.
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.
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...
Resources RubyGuides: Mastering Ruby Regular Expressions Using regular expressions in JavaScript Testing regular expressions visually Regular Expressions: Quantifier modes...
How do HTTP requests and responses look like? What are HTTP headers? What are they used for?
While working on a Rails application, your code base will grow a collection of different file types including: Ruby (business...
Stepping forward from JavaScript Basics, the goal of this card is for you to be able to read and write...
Understand how asynchronous JavaScript works: Read Henning's presentation about asynchronous Javascript (there's also a German video presentation...