keithtom

# Copyright (C) [2014] by Keith Tom <keith dot tom at gmail>
# Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted.
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE

module Rack
  # disable CSS3 and jQuery animations in test mode for speed, consistency and avoiding timing issues.
  # Usage for Rails:
  # in config/environments/test.rb
  # config.middleware.use Rack::NoAnimations
  class NoAnimations

Bertg

raise "Remove patch after rails 3.2" if Rails.version =~ /\A4/

# copy of lib/active_record/relation/spawn_methods.rb
# Because updating to this version 3.2.16 might change the behaviour of some of our queries,
# we took a copy of this class and remove the behaviour where 
module ActiveRecord
  module SpawnMethods
    def merge(r)
      return self unless r
      return to_a & r if r.is_a?(Array)

javan

class ApplicationController < ActionController::Base
  before_filter :ensure_xhr

  private
    def ensure_xhr
      if request.get? && request.format && (request.format.js? || request.format.json?)
        head :forbidden unless request.xhr?
      end
    end
end

julionc

How to install PhantomJS on Ubuntu

Version: 1.9.8

Platform: x86_64

First, install or update to the latest system software.

sudo apt-get update
sudo apt-get install build-essential chrpath libssl-dev libxft-dev

hrdwdmrbl

class Ability
  include CanCan::Ability

  def marshal_dump
    #blocks cannot be cached
    @rules.reject{|rule| rule.instance_variable_get :@block }.map{|rule| Marshal.dump(rule) }
  end
  def marshal_load array
    #blocks cannot be cached, so blocks must be re-defined
    can :read, Comment do |comment|

dimitarvp

require 'awesome_print'

input = <<TEXT
2       1       app/assets/javascripts/bar.js
16      25      app/assets/javascripts/baz.js.coffee
1       1       app/assets/javascripts/foo.js.coffee
4       9       app/controllers/bar_controller.rb
3       2       app/controllers/baz_controller.rb
11      0       app/controllers/foo_controller.rb
3       2       db/schema.rb

turadg

# Support for Rspec / Capybara subdomain integration testing
# Make sure this file is required by spec_helper.rb
# (e.g. save as spec/support/subdomains.rb)
 
def switch_to_subdomain(subdomain)
  # lvh.me always resolves to 127.0.0.1
  hostname = subdomain ? "#{subdomain}.lvh.me" : "lvh.me"
  Capybara.app_host = "http://#{hostname}"
end

ryansobol

Originally published in June 2008

When hiring Ruby on Rails programmers, knowing the right questions to ask during an interview was a real challenge for me at first. In 30 minutes or less, it's difficult to get a solid read on a candidate's skill set without looking at code they've previously written. And in the corporate/enterprise world, I often don't have access to their previous work.

To ensure we hired competent ruby developers at my last job, I created a list of 15 ruby questions -- a ruby measuring stick if you will -- to select the cream of the crop that walked through our doors.

What to expect

Candidates will typically give you a range of responses based on their experience and personality. So it's up to you to decide the correctness of their answer.

braintreeps

desc "install R packages"
task :install_R_packages do
  R_packages = File.read("#{release_path}/R_packages.txt").lines.map { |line| line.strip }

  R_package_cmd = R_packages.map do |package|
    'if(!require(\"'+package+'\")){ install.packages(\"'+package+'\",lib=c(\"'+shared_path+'/R\"), repos=\"http://cran.cnr.
berkeley.edu/\"); };'
  end.join(' ')

  sudo "sh -c 'if [ ! -d #{shared_path}/R ]; then mkdir #{shared_path}/R; fi'"

SzymonPobiega

If you have two days to learn the very basics of modelling, Domain-Driven Design, CQRS and Event Sourcing, here's what you should do:

In the evenings read the [Domain-Driven Design Quickly Minibook]{http://www.infoq.com/minibooks/domain-driven-design-quickly}. During the day watch following great videos (in this order):

1. Eric Evans' [What I've learned about DDD since the book]{http://www.infoq.com/presentations/ddd-eric-evans}
2. Eric Evans' [Strategic Design - Responsibility Traps]{http://www.infoq.com/presentations/design-strategic-eric-evans}
3. Udi Dahan's [Avoid a Failed SOA: Business & Autonomous Components to the Rescue]{http://www.infoq.com/presentations/SOA-Business-Autonomous-Components}
4. Udi Dahan's [Command-Query Responsibility Segregation]{http://www.infoq.com/presentations/Command-Query-Responsibility-Segregation}
5. Greg Young's [Unshackle Your Domain]{http://www.infoq.com/presentations/greg-young-unshackle-qcon08}
6. Eric Evans' [Acknowledging CAP at the Root -- in the Domain Model]{ht