With its you can switch the subject of an example to a method value of the current subject: describe Array...
For some reason you want to define a find condition in array form. And in that condition both column name...
Find conditions for scopes can be given either as an array (:conditions => ['state = ?', 'draft']) or a hash (:conditions => { 'state' => 'draft...
When using virtual attributes, the attached trait can be useful to automatically copy errors from one attribute to another.
power-rake db:migrate VERSION=20100913132321 By default the environments development, test, cucumber and performance are considered...
When Paperclip attachments should only be downloadable for selected users, there are three ways to go. The same applies to...
This will show you how to create a RSS feed that the Feed Validator considers valid. Note that RSS is...
In modern Rails versions you can also use ActiveRecord's pluck method. User.active.pluck(:id) => [1, 5, 23, 42]
You should test the callback methods and its correct invocation in two separate tests. Understand the ActiveRecord note before you...
In july Google announced a new version of their image serach tool Google Images. But you won't find it...
Be careful! The following solution will delete files on a volume. If you don't know exactly what you're...
In a great post about named routes in Rails, path vs. url, Viget Labs ponders which variant is best used...
This gem is designed to provide CSS views to Rails, and a process to concatenate and minify these files to...
This post explains, in some detail, how we will implement a nice performance boost for Rails developers. Understanding the details...
WMD is a simple, lightweight HTML editor for blog comments, forum posts, and basic content management. You can add WMD...
Expiration of Rails sessions By default Rails sessions expire when the user closes her browser window. To change this edit...
The following Haml will do: %head{ :profile => 'http://www.w3.org/2005/10/profile' } %link{ :href => image_path('favicon.ico'), :rel => 'icon', :type => 'image/vnd.microsoft.icon' }
There are two distinct ways of commenting Haml markup: HTML and Ruby. HTML comments This will create an HTML comment...
This is an awesome gadget in your toolbox, even if your test coverage is great. gem install ruby-debug (Ruby...
To return non-HTML responses (like XLS spreadsheets), we usually use the respond_to do |format| format.xls do # send spreadsheet...
Rails 3, 4, 5, 6 config/application.rb config/environment.rb before the initialize! call (we don't usually edit this file)
Update RubyGems and Passenger Bundler requires Rubygems >= 1.3.6. Run gem update --system if you have an older version.
This might eventually be fixed by Rails itself.\ Right now this is the way to have the rails_xss plugin...
Sometimes files attain executable-flags that they do not need, e.g. when your Windows VM copies them over a Samba...