jqr

  def render_optional_error_file(status)
    begin
      code = ActionController::StatusCodes::SYMBOL_TO_STATUS_CODE[status]
      render :template => "/statics/#{code}"
    rescue
      super
    end
  end

jqr

# An array of String subclasses does not sort using <=> on the subclass, WTF?

class StringSubclass < String
  def <=>(other)
    puts "using <=> in #{self.class}: #{caller.first}"
    super
  end
end

StringSubclass.new <=> StringSubclass.new

jqr

Benchmark = function(description, timed_function) {
  var start = new Date()
  timed_function();
  console.debug(description + ': ' + (new Date() - start) + 'ms');
}

jqr

before "deploy:symlink", "deploy:check_app_dependencies"

namespace :deploy do
  desc "Checks for required dependencies by starting the application"
  task :check_app_dependencies, :roles => :app do
    app_env = fetch(:rails_env, "production")
    run "cd #{release_path};  RAILS_ENV=#{app_env} ./script/runner ''"
    # TODO: anything required for rollback?
  end
end

jqr

# Preloads models in a subdirectory of RAILS_ROOT/app/models so STI can find
# them properly.
Dir.glob(File.join(RAILS_ROOT, 'app', 'models', '**/*.rb')) do |file|
  require file
end

jqr

class Hash
  # Flattens a hash by joining keys with joiner. Meant for use with String or
  # Symbol keys. Resulting hash keys take on the type of the parent key.
  #
  #  { 'a' => { 'b' => 1 } }.flatten_with_joined_keys
  #  # => {"a_b"=>1}
  #  { :a => { :b => { :c => { :d => 1 } } } }.flatten_with_joined_keys('')
  #  # => {:abcd=>1}
  def flatten_with_joined_keys(joiner = '_')
    output = {}

jqr

A friend started donating to each open source project he uses on client 
work[1], and I’m trying to follow the same practice. Except you don’t 
seem to have pledgie enabled on any of your projects, gah! To each his 
own, but please let me know if you enable pledgie.

[1] http://opensoul.org/2009/1/9/give-back-to-the-community

jqr

class UserNotifier < ActionMailer::Base
  def self.without_deliveries
    initial = self.perform_deliveries
    self.perform_deliveries = false
    yield
    self.perform_deliveries = initial
  end
  
end

jqr

  def equalize_lists(one, two, empty_list_item = '<li>&nbsp;</li>')
    difference = one.size - two.size
    if difference == 0
      [one, two]
    elsif difference > 0
      [one, two + [empty_list_item] * difference]
    elsif difference < 0
      [one + [empty_list_item] * difference.abs, two]
    end
  end

jqr

# Spawned from this thread: http://rubyflow.com/items/1990

module Enumerable
  # Wraps an enumerable in an easy interface for selecting subsets. Comparison
  # and method calls are supported.
  #
  #  [0, 1, 2, 3].filter > 1        # => [2, 3]
  #  [0, 1, 2, 3].filter.zero?      # => [0]
  # 
  # Warning: Do not use this with the != operator, use filter_not instead.