tl;dr: Ruby's Bundler environment is passed on to system calls, which may not be what you may want...
Rails gives you migrations to change your database schema with simple commands like add_column or update. Unfortunately these commands...
In specs, the session never persists but is always a new object for each request. Data put into the session...
All Rubyists should be familiar with the common definitions for include and extend. You include a module to add instance...
Non-SSL contents on SSL pages are blocked by default Bug 834836 – Turn on pref to block mixed active content...
All columns of a model's database table are automagically available through accessors on the Active Record object.
What you copy may not be what you see in the browser. Here is an online tool to determine the...
Note: This technique is confusing and slows down your test suite. Copy the attached code to features/support. This gets you...
Say you want to allow users to emphasize some string, but the whole markdown thing would be far too much...
Usually, the logrotate service takes care of renaming log files each night or so to avoid logs becoming huge. That...
When you use ab to do some performance benchmarking, you might run into output like this: Complete requests: 200
Rails’ reputation as a relatively secure Web framework is well deserved. Out-of-the-box, there is protection against many...
yaml4r is a juxtaposition of yaml documents and their Ruby couterpart. Thus, it does a great job as YAML-doc...
Sometimes you might want to limit the number of associated records in a has_many association, but cannot add a...
Spreewald's patiently repeats the given block again and again until it either passes or times out.
Ever wondered about the difference between def and define_method? Turns out there are three implicit contexts in Ruby. def...
The way Rational#to_s works on Ruby has changed from Ruby 1.9 on. Here is how to get the...
When a controller action redirects to an external URL (like http://somehost.com/some/path) you will find that this is hard...
To set a cookie in your test browser for cucumber tests, you need to know which driver you are using...
The following code doesn't work like expected: page.find(css_selector).find(other_css_selector) The second .find will search...
Great presentation about writing Javascript like you write everything else: Well-structured and tested. JavaScript is no longer a toy...
In Ruby, the meaning of protected and private is different from other languages like Java. (They don't hide methods...
Access the Method object Dead simple: Get the method object and ask for its owner: "foo".method(:upcase) # => #
Chart.js seems to be a good alternative to Google's Chart API and other commercial chart drawing libraries.