Goal Within before_* Within after_* Cancel later callbacks throw :abort throw :abort Rollback the transaction throw :abort raise ActiveRecord::Rollback...

If you're still working on ruby 1.8, you should know that using SimpleDelegator is often prohibitively slow. I have...

# Attach a file # # Example: # # Company.new.logo = File.new… # # Given the file "…" was attached as logo to the company above # # # Example: # # class Gallery...

This error occurs when you already have a database.yml which defines the database for the cucumber environment instead of test...

Say you have a User with a Carrierwave attribute #avatar: class User < ActiveRecord::Base mount_uploader :avatar, AvatarUploader end

Rubymine supports keybinding to switch panes by hotkey like awesome window manager users are used to. Type "splitter" in the...

When you want to find out the data type of an attribute, you can just use ActiveRecord's columns_hash...

I've written about the problem with user stories before. At the time, I found it better to just have...

Note - This is not a tutorial on setup or configuration of Secure Shell, but is an overview of technology which...

Ruby publishes security issues and MRI updates on ruby-lang.org. Unfortunately there is no straight-forward way to subscribe to these...

Rack::Attack is a rack middleware to protect your web app from bad clients. It allows whitelisting, blacklisting, throttling, and...

FastClick is a simple, easy-to-use library for eliminating the 300ms delay between a physical tap and the firing...

If you get a Quota error with OpenStack, it doesn't have to be what it tell. For example, I...

Syn is a synthetic event library that pretty much handles typing, clicking, moving, and dragging exactly how a real user...

A clever way to have inline labels ("placeholders") that don't disappear when the user enters text.

Sometimes you need to monitor a connection from your machine to a specific, single host or network in order to...

A better way to search Font Awesome & Glyphicons.

When I upgraded from 0.5.4 PDFKit deadlocked or crashed when an ApplicationController::RouteError occured. If this error happens only because...

Ubuntu 12.04 LTS x64, Ruby 1.8.7, Rails 2.13, PDFKit 0.5.4, Phusion Passenger Apache 2 I ran into this, when I...

swaks is a very nice tool to test SMTP. For the most linux distributions you can easily install it with...

Font Combiner offers a way to tweak and adjust any TTF or OTF font (license permitting), by bringing in font...

I am using git at several places: at work, at university, and at home. I want an own git user/email...