CacheSweepers and url_for
Monday, December 31st, 2007 Posted in ActionController, ActionView, Rails, Ruby | No Comments »It appears url_for only seems to work correctly in a CacheSweeper when running a server in production mode. I've confirmed this in Rails 2.0.2. class MySeeper < ActionController::Caching::Sweeper observe Item def after_create(item) value = url_for(:controller => :items) end end In development mode, value evaluates ...
Enumerable#sort
Wednesday, December 12th, 2007 Posted in ActiveRecord, Rails, Ruby | No Comments »In Ruby, to sort a collection of Objects, the <=> method needs to be defined. Suppose we have the following: # has a field created_at, which is a datetime class Event < ActiveRecord::Base end Let's say we want to do the following: @events = Event.find(:all) @events.sort To ...
Ruby Procs: Part I
Thursday, August 30th, 2007 Posted in Object-Oriented Programming, Ruby | No Comments »In high school, I had a computer programming teacher who described variables as 'mailboxes', with values being 'postcards'. In my four years of college, I don't think I've ever heard that term or comparison again - though, in retrospect, I ...