agibralter

if Rails.env.features? || Rails.env.test?
  ActiveRecord::Base.class_eval do
    class << self
      def delete_all_of_all
        @model_subclasses_for_delete_all_of_all.each do |klass|
          klass.delete_all
        end
      end
      def inherited_with_model_tracker(subclass)
        @model_subclasses_for_delete_all_of_all ||= []

jcasimir

Friendly URLs

By default, Rails applications build URLs based on the primary key -- the id column from the database. Imagine we have a Person model and associated controller. We have a person record for Bob Martin that has id number 6. The URL for his show page would be:

/people/6

But, for aesthetic or SEO purposes, we want Bob's name in the URL. The last segment, the 6 here, is called the "slug". Let's look at a few ways to implement better slugs.

jcasimir

Sessions and Conversations

HTTP is a stateless protocol. Sessions allow us to chain multiple requests together into a conversation between client and server.

Sessions should be an option of last resort. If there's no where else that the data can possibly go to achieve the desired functionality, only then should it be stored in the session. Sessions can be vulnerable to security threats from third parties, malicious users, and can cause scaling problems.

That doesn't mean we can't use sessions, but we should only use them where necessary.

Adding, Accessing, and Removing Data

thbar

This readme is a mixture of everything I read on SO+nokogiri wiki, which ultimately worked out for me.

Here are the steps which worked for me to get rid of segfaults with Nokogiri 1.4.4, on both Lion and Snow Leopard, with Ruby 1.8.7 (patchlevel 334 and +).

First diagnose which version of libxml2 you're using:

bundle exec nokogiri -v

If you have 2.7.3 listed somewhere, you're in bad waters (known to segfault). Install this:

forest

#!/usr/bin/env ruby

# gem 'pivotal-tracker'
require 'pivotal-tracker'

TRACKER_TOKEN = "..."
TRACKER_PROJECT_ID = "..."

PivotalTracker::Client.token = TRACKER_TOKEN
PivotalTracker::Client.use_ssl = true

adaugherity

#!/usr/bin/ruby
# Create display override file to force Mac OS X to use RGB mode for Display
# see http://embdev.net/topic/284710

require 'base64'

data=`ioreg -l -d0 -w 0 -r -c AppleDisplay`

edids=data.scan(/IODisplayEDID.*?<([a-z0-9]+)>/i).flatten
vendorids=data.scan(/DisplayVendorID.*?([0-9]+)/i).flatten

simeonwillbanks

$ export BYEBYE=ruby                                 
$ ps x | grep $BYEBYE | cut -d' ' -f1 | xargs kill -9            

simeonwillbanks

require 'thread'

# A synchronization barrier enables multiple threads to wait until all threads
# have all reached a particular point of execution before any thread
# continues.
class Barrier
  
  # Initialize new barrier. The _count_ argument specifies the number of threads
  # that must call #wait before any of them successfully return from the call.
  # The value specified by _count_ must be greater than zero.

kristianmandrup

Aurelia

Recipe

• Install NVM
• Install IO.js
• Install global Node.js utility modules (gulp, jspm, yo)
• Install RethinkDB
• Install Koa.js
• Install Aurelia generator
• Create Aurelia app via generator

tranzium

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