When Rack::Bug has been added to your project and your Apache2/Passenger only replies with an Error 500 (Internal Server...
Framework to write command-line apps in Ruby. Comes with a nice way of processing parameter options, some utility classes...
[1,2,3,4].sample # => e.g. 4 If you'd like to cheat and give different weights to each element...
When you use one line Ruby comments in ERB templates you should never do this (notice the whitespace in front...
Seems like a useful gem for cases where ActiveRecord is overkill but you don't want to do everything by...
Gem to generate entity relationship diagrams from your Rails 3 ActiveRecord models. The diagram style is pretty and configurable.
For performance improvements (and to remove the need for eager loading), the ActsAsTaggableOn gem supports caching your tag lists directly...
I still see people promoting various gems and plugins to handle miscellaneous configuration elements for your application. One little known...
To use different Ruby versions on your computer you can use the Ruby Version Manager. It also allows you to...
"Classic" Excel (XLS) has a magic limit of 65535 rows per worksheet. This was fixed in XLSX but the version...
When you have objects in your database that hold latitude and longitude and you want to find others that are...
ActiveSupport's memoize has a dangerous feature you might not know about. Assume you have class DeepThought extend ActiveSupport::Memoizable...
require 'open-uri' File.open('/target/path/to/downloaded.file', "wb") do |file| file.write open('http://example.com/your.file').read end Basic Authentication
There are several options, but most of them are impractical. The best way is to use the :ruby filter:
If you get an error like this: Unable to launch /home/bruce/Projects/myproject/tmp/capybara/capybara-201110311210111407691101.html ... update your launchy gem. It failed for us in...
After starting the Rails server in a freshly generated Rails 3.1 project you could see an error message such as...
Note: This applies specifically to MySQL. In PostgreSQL for example, this is not an issue. If you care about performance...
Clearance is a gem that provides authentication functionality (e.g. login, logout). This note explains, how the clearance login, logout and...
By default, Rails views escape HTML in any strings you insert. If you want to insert HTML verbatim, you need...
If you encounter the error message above when running cucumber, just execute... rm rerun.txt ...in the Rails directory.
While 2.0 will include a number of syntax changes, new features and general improvements, mentioned below, it is anticipated to...
The most common use case for Ruby's #collect is to call a method on each list element and collect...
In order to monitor a Rake task using God your Rake file must write a file with its process ID...
Looks simpler than inaction_mailer: gem install mailcatcher mailcatcher Setup Rails to send mails to 127.0.0.1:1025. Usually you want...