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...
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...
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...
If you want to rename a key of a Ruby hash, this could help you out. Just put it into...
In july Google announced a new version of their image serach tool Google Images. But you won't find it...
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...
Be careful! The following solution will delete files on a volume. If you don't know exactly what you're...
When you load a record with find options that have SQL fragments in :select or :joins, ActiveRecord will make that...
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...
Captify is a plugin for jQuery written by Brian Reavis (@brianreavis) to display simple, pretty image captions that appear on...
This post explains, in some detail, how we will implement a nice performance boost for Rails developers. Understanding the details...
A jQuery plugin that sets a div or span to show a countdown to a given time
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...
When submitting textareas, browsers sometimes include carriage returns (\r) instead of just line feeds (\n) at the end of each...
If you iterate over a collection of arrays, you can destructure the arrays within the block parameters: movies_and_directors...
When a spec only runs when it is called directly, but not as part of the whole test suite, make...
sudo apt-get install i8kutils Reboot You can now run the i8k tools such as i8kmon Setting the fan speed...
Call with the server's hostname (and user if you have no SSH agent), e.g. install-gems-remotely my.server.com