Aliasing Attributes in Ruby on Rails
Alias an attribute with alias_attribute method.
The first argument is the name for the new attribute, while the second argument is to identify the attribute that is already defined.
class User < ActiveRecord::Base
alias_attribute :username, :login
...
Written by Sean Behan on 06/17/2012
Recursively Zip Up a Directory while Excluding Certain Files Based on File Extension Type
In the example below, I'm going to zip up a directory that includes images in both PNG and PSD file formats. However, I want to exclude the PSDs because they are huge!
zip -r my-compressed-dir-without-psd.zip directory-to-zip -x '*.psd'
Written by Sean Behan on 06/17/2012
How to Add Additional Sub Directories to the Default Rails Test:Unit File Structure
# Edit Rakefile in project root
#
# Add a new rake test task... E.g., rake test:lib, below everything else in that file...
# Alternatively, add a task in lib/tasks/ directory and plop in the same code
namespace :test do
desc "Test lib source"
...
Written by Sean Behan on 06/17/2012
Git: How to Delete a Branch with an Invalid Name
If you've named a branch beginning with two dashes "--", you're sort of in trouble because git interprets your branch name as a switch/flag. You can skip switches all together
by supplying two dashes before your branch name
git branch -d -- --index_for_...
Written by Sean Behan on 06/17/2012
Pickle Python Objects
import pickle
entity = {
"user_id": "1",
"title": "Natural Dog Training",
"link": "http://naturaldogtraining.com",
}
pickled_entity = pickle.dumps(entity)
unpickled_entity = pickle.loads(pickled_entity)
Written by Sean Behan on 06/17/2012
