To use different Ruby versions on your computer you can use the Ruby Version Manager. It also allows you to...

If you get the above error when running tests in bulk (but not individually), it's actually the fault of...

"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...

You have to specify the environment with -e env_name or RAILS_ENV=env_name if you want to run...

If you would like to use language specific layout (e.g. background-images) in your applications stylesheets you can achieve this...

You can group contacts using a mailing list in Thunderbird for easier access and less trouble when trying to find...

Instead of running all missing migrations on your test database with rake db:migrate RAILS_ENV=test you can also...

When using state_machine you sometimes need to know whether an object may execute a certain transition. Let's take...

In order to prevent the browser from asking whether to remember the password, give a form an autocomplete attribute with...

Forms with many inputs (600+ in my case) become extremely unresponsive on an iPad, up to the point where it...

ActiveSupport's memoize has a dangerous feature you might not know about. Assume you have class DeepThought extend ActiveSupport::Memoizable...

Two new methods on and off are the new way of declaring event handlers. bind, delegate and live area deprecated...

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...

Look here for informations how you can show the MySQL default character set. At first you need the Amazon RDS...

Web fonts are awesome. After being restricted to Arial for two decades there is finally a cross-browser way to...

You must reconfigure the guest so it will get its own IP address: Shutdown the guest In the guest's...