# spec/spec_helper.rb
# .... some stuff ...
 require 'activerecord'
module  MyExtensions
  def self.extended(base)
    class << base # Beginning of Proxy
      def subclass_with_fixtures(*args,&block)
        child = subclass_without_fixtures(*args,&block)
        child.module_eval do
          include ActiveSupport::Callbacks
          define_callbacks :setup, :teardown
          include ActiveRecord::TestFixtures
 
          self.fixture_path = File.expand_path("../db/fixtures",__FILE__)
          self.use_instantiated_fixtures = false
          self.use_transactional_fixtures = true
          self.set_fixture_class :categories => 'Categorie'
 
          def run_in_transaction?
            true
          end
        end
        child
      end # End of method chain subclass_with_fixtures
      alias_method_chain :subclass, :fixtures
    end # End of Proxy
  end # End of extended
end # End of MyExtensions
 
RSpec::Core::ExampleGroup.extend(MyExtensions)
RSpec.configure do |config|
 
  config.after(:each) do
    run_callbacks :teardown, :enumerator => :reverse_each
  end
 
  config.before(:each) do
    run_callbacks :setup
  end
 
end

  # spec/db/fixtures/posts.yml
  a_post:
    title: "My first post"

# spec/post_spec.rb
describe "Post" do
  before(:all) do
   self.class.fixtures :posts
  end
 
  it "should not save without a title" do
     post = posts(:a_post)
    post.title = nil
    post.save.should_not be_true
  end
end

<%= form_tag('/search') do %>
  <p>
    <label for="title">title</label>
    <%= text_field_tag 'title' %>
  </p>
  <p>
    <label for="author">Author</label>
    <%= select_tag 'author',  options_for_select @authors, @selected_author %>
  </p>
  <% @genres.each do |g| %>
    <p>
      <label for="<%= 'genre_' + g.id.to_s %>"><%= g.label %></label>
      <%= check_box_tag 'genre[]', g.id, g.id == @selected_genre, :id => "genre_#{g.id}" %>
    </p>
  <% end %>
<% end %>

<%= form_for @search do |f| %>
  <p>
    <%= f.label :title, 'Title' %>
    <%= f.text_field :title %>
  </p>
  <p>
    <%= f.label :author, 'Author' %>
    <%= f.select :author, @authors %>
  </p>
 
  <% @genres.each do |g| %>
    <p>
      <label for="<%= 'genre_' + g.id.to_s %>"><%= g.label %></label>
      <%= check_box_tag 'search[genre][]', g.id, g.id == @selected_genre, :id => "genre_#{g.id}" %>
    </p>
  <% end %>
  <%= submit_tag "Search" %>
<% end %>

# encoding: utf-8
class Search
  def initialize(params={})
    @params = Hash.new.merge(params['search'] || {})
  end 
 
  def method_missing(method_sym,*args)
    case method_sym.to_s
    when /^\[\]=?$/
      @params.send(method_sym,*args)
    when /^(.*)=$/
      @params.update($1,*args)
    else
      @params[method_sym.to_s]
    end
  end
 
end

# app/controllers/search_controller.rb
 
def search
  @search = Search.new(params)
  # ....
end

# From devise gem version 1.1.3
validates_format_of     :email, :with  => email_regexp, :allow_blank => true

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :token_authenticatable, :confirmable, :lockable and :timeoutable
  include SkipableMethod
 
  # Devise is great but uses the oldest way with regexp to validate email
  skip_and_restore_method(:validates_format_of) do
    devise :database_authenticatable, :registerable,
      :recoverable, :rememberable, :trackable, :validatable
  end
 
  # Replace with a validation of my own
  validates :email, :email => true, :presence => true
 
  # Setup accessible (or protected) attributes for your model
  attr_accessible :email, :password, :password_confirmation, :remember_me
 
end

module SkipableMethod
  module ClassMethods
 
    protected
    def __skip_method(*args);end
 
    def skip_and_restore_method(*method_names,&block)
      method_names.each do |method_name|
        instance_eval <<-EVAL
        alias #{method_name}_skipped #{method_name}
        alias #{method_name} __skip_method
        EVAL
      end
 
      yield
 
      method_names.each do |method_name|
        instance_eval <<-EVAL
        alias #{method_name} #{method_name}_skipped
        undef #{method_name}_skipped
        EVAL
      end
    end
  end
 
  def self.included(receiver)
    receiver.extend         ClassMethods
  end
end

# As of mysql 4.x does not support "RELEASE SAVEPOINT" statement
if ActiveRecord::Base.connection.instance_variable_get("@connection").get_server_info < '5.0'
  ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
    # Unset release savepoint method 
    def release_savepoint
    end
  end
end