Tagaholic - Hirb - Irb On The Good Stuff
Hirb provides a mini view framework for console applications, designed with irb in mind.
Related cards:
Building and Scaling a Startup on Rails: 12 Things We Learned the Hard Way - Axon Flux - A Ruby on Rails Blog
There are a bunch of basic functional elements to building out a popular Rails app that I've never really seen explained in one place, but we had to learn the hard way while building Posterous.
Introducing RMM, the Rails Maturity Model - Ruby on Rails meets the business world | Google Groups
A couple of Railsconfs ago, Courtenay and I did indeed discuss
Ruby, Ruby on Rails, and _why: The disappearance of one of the world’s most beloved computer programmers
Nice article to educate your non-geek girlfriend/boyfriend about the joys of programming.
Ruby on Rails » Keeping Up With The Joneses: Keeping Rails and its extensions up to date » Pathfinder Development
There are many wonderful things about Rails and the Rails ecosystem. A clean, well-lighted path for keeping all your extensions up to date is not one of them.
Use the Ruby debugger on Rails 2 script/runner scripts
This card needs to be updated for Rails 3+.
Since there is no --debugger flag you need to run:
rdebug script/runner lib/scripts/something.rb
That will open an debugging IRB right away, like this:
require File.dirname(__...
Ruby constant lookup: The good, the bad and the ugly
In Ruby, classes and modules are called constants. This card explains how Ruby resolves the meaning of a constant.
The good
E. g. in the following example, Array could mean either Foo::Array or simply Array:
class Fo...
Lightning Talk: Coverage based Test Case Prioritization in Ruby on Rails
For my computer science bachelor's thesis I programmed and evaluated a CLI Test Case Prioritization (TCP) tool for makandra. It has been written as a Ruby Gem and was tested and evaluated against one Ruby on Rails project....
Solving "TypeError (nil can't be coerced into Integer)" in the Rails console / IRB
On the Rails console, assigning an object to a variable can lead to this strange error (without stacktrace):
irb > recipient = Recipient.find(123)
Traceback (most recent call last):
TypeError (nil can't be coerced into Integer)
irb > recipi...
Use non-ASCII characters on IRB and Rails consoles with RVM and Mac OS X
If you are using RVM on a Mac and cannot enter 8+ bit characters on an IRB or Rails console, you are missing the readline package. You will need to re-install your Ruby to fix this:
rvm remove ree
rvm package install readline
rvm in...
How to get the hostname of the current machine in Rails or a Ruby script
Use Socket.gethostname. So for a machine whose hostname is "happycat", it will look like this:
>> Socket.gethostname
=> "happycat"
That should work right away for your Rails application. For plain Ruby, you first need to do:
requi...