RSpec's context (which is basically an alias for describe) takes over your whole application. No object may have its...
When you need to delete rows from a table, and the delete conditions require a joined table, MySQL needs to...
You can use record.send(:update_without_callbacks) or record.send(:create_without_callbacks) This can be used as a...
We use RTeX for PDF exports. While converting LaTeX to PDF, RTeX opens a temporary file which has problematic permissions...
You don't need a Rails application to use Sass. Even when you're working on a static site you...
It’s pretty common for projects hosted on GitHub to receive “pull requests”: requests from people who have cloned your...
This will not work (it always passes): Then the "Title" field should contain "" The value is turned into a regular...
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...
There are many different methods that allow mapping an Array to a Hash in Ruby. Array#to_h with a...
When Paperclip attachments should only be downloadable for selected users, there are three ways to go. The same applies to...
If you need to find all files inside a directory that were modified in the last 24 hours you can...
Do that for noble reasons only.
This will show you how to create a RSS feed that the Feed Validator considers valid. Note that RSS is...
The CSS Emoticons plugin is a simple jQuery plugin (and stylesheet) that allows you to turn any text emoticons on...
Getting started with Ruby extensions in C.
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...
delocalize provides localized date/time and number parsing functionality for Rails.
First of all: You could just use RVM which would make the pain go away. If for some reason you...
You can use the whatlanguage gem to detect the language of a Ruby string. Note that it also has not...