Don't write resources :people, :concerns => :trashable Write resources :people do concerns :trashable end Why Writing a controller...

Chrome has discontinued support for 32-Bit Linux builds and this might break your apt-get update.

To delete a certificate request run sudo puppet ca destroy $your.full.hostname on your puppetmaster.

Until recently, you could open a new tab via window.open when using execute_script in Selenium tests. It no longer...

As described by the linked Stackoverflow answer, run these commands: sudo add-apt-repository ppa:git-core/ppa -y

From time to time, RubyMine suddenly did not accept any keyboard input and felt crashed, while mouse interaction was still...

After restarting an OpenStack host you may encouter problems with missing iptables rules (we're on an quite old release...

While you can use Apache as a reverse proxy, it tries to be too smart. Try nginx instead, it's...

This is a guide on how to effectively use Git when working on a feature branch. It is designed to...

I figure we needed a definitive reference for what work is triggered by changing various CSS properties. It's something...

In the DevTools settings, there's a "Shortcuts" section. Found these keyboard shortcuts there: General ESC Toggle drawer

This is how you regain disk space from OpenStack instances if you are using kvm and qcow. If your instance...

Understand how nested attributes appear in the params. See how the Rails form helpers encode the names of nested...

If you have problems installing a gem and get a error collect2: error: ld returned 1 exit status it's...

We organize our daily work with issues in our Linear workspace. Issue format A good issue needs to be precise...

PhantomJS has no binary builds for Linux, and building it yourself is painful. However, you can install it through npm...

First install Node.js / npm. Then you can install Bower through npm: sudo npm install -g bower

I recommend install Node.js using nvm. This way you can have multiple Node versions in your ~/.nvm. You also won...

Your MovieDB gained traction and is now a popular tool among cineasts. This comes with a downside: You noticed a...

DevDocs combines multiple API documentations in a fast, organized, and searchable interface. Here's what you should know before you...

Built-in matchers Get an overview of all the matchers that are built into RSpec. Play with some of...

If you need a postgresql extension for your database it isn't a good idea to give your applications database...

Use form models to handle this problem Or soften the validation to validates_presence_of :parent

tig is a command line explorer for Git that is just awesome. Install via apt-get or brew. Handy commands...