Read (or re-read) the following chapters from our book Growing Rails Applications in Practice (it’s in our...
A common task in web applications is to add client-side JavaScript behavior to existing HTML elements.
The migration DSL now supports adding and removing foreign keys. They are dumped to schema.rb as well. At this time...
When running capybara with Chrome you might start seeing frequent "no alert open" errors when trying to interact with browser...
Your after_commit callbacks will not know about changes, as Rails discards them when committing. The linked article shows a...
Very detailed guide to caching Ruby on Rails. Goes well with the official Rails guide on caching.
Large projects usually have large test suites that can run for a long time. This can be annoying as running...
Understand the differences between git diff and git diff --staged (or git diff --cached) Understand the difference between git...
Learn Enough Command Line to be Dangerous (it's in our library => Google Drive) CLI tricks every developer should...
Action Mailer Basics and Previews Chapter "Task H1: Sending Confirmation Emails" from Agile Web Development with Rails (in our...
Learn to treat files as an ActiveRecord attribute type, like :string or :integer Research Look at the README for...
Understand what Memoization is and when it can be useful. Understand the @variable ||= computation pattern. Learn how to use...
In this card we will learn to write code that scales with a large number of database records. We will...
CSS (+ some Javascript) framework, implementing Google's material design for static web pages. Can be used for plain websites without...
Read the following chapters from The Pragmatic Programmer, anniversary edition (in our library): Chapter 1, Topic 3: Software Entropy...
Understand at least the following CSS concepts: Classes Selecting elements for styling Basic styling (color, typography, spacing)
Understand why we test: Low defect rate without a QA department. Customer acceptance testing can concentrate on new features...
Rails is our web framework. Goals Be able to write a simple Rails application. Understand how Rails talks to the...
makandra is responsible for maintaining about 75 Ruby projects. These projects use a large number of different versions for Ruby...
When using ORDER BY "column" in PostgreSQL, NULL values will come last. When using ORDER BY "column" DESC, NULLs will...
SmartUnderline is an open-source JavaScript library which uses clever tricks to draw underlines in a more beautiful and readable...
Today I ran into this: Invalid gemspec in [/usr/local/rvm/gems/ruby-1.9.3-p194/specifications/ZenTest-4.9.3.gemspec]: Illformed requirement ["< 2.1, >= 1.8"]. You need a newer Rubygems version. Try...
Rails comes with grouped_collection_select that appears to be useful, but isn't. As an alternative, consider the flat...
Note: ActiveRecord::Base#becomes has a lot of quirks and inconsistent behavior. You probably want to use ActiveType.cast instead.