Ever wanted autocompletion for paths from paths.rb in Cucumber? This card lets you write your steps like this:

This plugin makes it easy to add fit-to-fill background video to websites. It can play silent ambient background...

StaticMatic is a nice tool to build simple static websites. In case you want to have some nifty styles on...

Trick: Do not use convert but mogrify: mogrify -resize 50% * This overwrites the original image file. In contrast, convert writes...

If you type a command in your bash that doesn't exist you get this: bash: foo: command not found...

Note: Modern Rails has two build pipelines, the asset pipeline (or "Sprockets") and Webpacker. The principles below apply for both...

When you get an error like this: Invalid gemspec in [/opt/www/foo-project.makandra.de/shared/bundle/ruby/1.8/specifications/carrierwave-0.6.2.gemspec]: Illformed requirement ["# 1.1.4"] ... the machine's Rubygems needs to...

Keychain helps you to manage ssh and GPG keys in a convenient and secure manner. It acts as a frontend...

We frequently use the handy Paperclip Gem to manage file attachments. If you need to move the files from local...

Under certain circumstances gettext_i18n_rails will hit a near-infinite loop. This occured in Rails 2.3.5 with Haml 3.0.18...

Interesting interview with DHH, where he talks about how they made the new Basecamp feel very fast without using a...

If you have an html_safe string, you won't be able to call gsub with a block and match...

If (for some reason that you don't want to ask yourself) you need to know all classes that define...

If you want to update some records with boolean fields in a migration, always remember to set your values with...

In a nutshell: return statements inside blocks cause a method's return value to change. This is by design (and...

If you get errors from your development WEBrick that contain unicode salad, you are probably requesting the page via SSL...

A print stylesheet is easy to create. Choose a font suited for paper, hide some elements, done. Unfortunately print stylesheets...

With the the Ruby Tempfile class you can create temporary files. Those files only stick around as long as you...

This article describes how to reset MySQL's or MariaDB's root password on your workstation. It's meant for...

There are many fun Unicode characters like ▲ or ☯. You might be tempted to use them for graphical elements in lieu...

sudo apt-get install gnome-session-fallback or (alias) sudo apt-get install gnome-panel from a terminal.

Assuming the following sunspot setup of the post class: class Post < ActiveRecord::Base searchable do text :title string :state

Note: Instead of using the method in this card, you probably want to use ActiveType's nested attributes which is...