erichurst

file 'Gemfile', <<-GEMS
source 'http://gemcutter.org'
gem "rails",    "3.0.0.beta3"
gem "bson_ext", '0.20.1'
gem "mongoid",  "2.0.0.beta4"
gem "compass",  "0.10.0.rc5"

group :test do
  gem "rspec-rails", "2.0.0.beta.8"
  gem "capybara"

erichurst

class SomeController < ApplicationController
  layout "some_layout", :only => [:new, :edit]
  ...
end
#=> renders all actions, other than new and edit, with no layout.

class SomeController < ApplicationController
  def edit
    ...
    render :layout => "some_layout"

erichurst

# mongo_template.rb
# fork of Ben Scofield's Rails MongoMapper Template (http://gist.github.com/181842)
#
# To use:
#  rails project_name -m http://gist.github.com/gists/219223.txt

# remove unneeded defaults
run "rm public/index.html"
run "rm public/images/rails.png"
run "rm public/javascripts/controls.js"

erichurst

class User < ActiveRecord::Base
  validate_on_create :referrer_must_be_existing_user
...
  def self.find_valid_referral(username)
    case 
    when username.blank? then Elder.first(:group => "distribution_count ASC").user_id
    when !username.blank? && self.exists?(:username => username) then User.find_by_username(username).id
    else nil
    end
  end

erichurst

def referrer_must_be_existing_user
  errors.add(:referral_id, "is not a valid user") if referral_id.blank?
end

erichurst

def self.find_valid_referral(username)
  case 
  when username.blank? then EarlyAdopter.first(:group => "distribution_count ASC").user_id
  when !username.blank? && self.exists?(:username => username) then User.find_by_username(username).id
  else nil
  end
end

erichurst

class User < ActiveRecord::Base
...
  def self.find_valid_referral(username)
    user = User.find_by_username(username)
    if user.nil?
      nil
    else
      user.id
    end
  end

erichurst

def create
  referral = User.find_by_username(params[:user][:referral])
  @user = User.new(params[:user].merge(:referral_id => referral.id))
end

erichurst

class UsersController < ApplicationController
...
def create
    referral_id = User.find_valid_referral(params[:user][:referral])
    @user = User.new(params[:user].merge(:referral_id => referral_id))
    ...
  end
...
end

erichurst

class Elder < ActiveRecord::Base
  def self.increment_distribution_count(user_id)
    self.find_by_user_id(user_id).increment!(:distribution_count)
  end
end