DRY Mongoid modules

dr_spec.rb

#http://jessewolgamott.com/blog2012/02/29/the-one-where-we-dry-up-mongoid-and-rspec-using-shared-examples-and-modules/

require 'spec_helper'

module Contactable

  def self.included(receiver) 
    receiver.class_eval do
      field :first_name, type: String
      field :last_name, type: String
      field :phone_number, type: String
      field :address_line_1, type: String
      field :city, type: String
      field :state, type: String
      field :postal_code, type: String
      field :email, type: String
      validates_presence_of :first_name
      validates_presence_of :last_name
    end
  end
end

class Doctor
  include Mongoid::Document
  include Mongoid::Timestamps
  include Contactable
end

shared_examples_for Contactable do
  it { should have_fields(:first_name, :last_name) }
  it { should have_fields(:phone_number, :email, :address_line_1, :city, :state, :postal_code) }
  it { should validate_presence_of(:first_name) }
  it { should validate_presence_of(:last_name) }
end

describe Doctor do
  it_behaves_like Contactable
end