josevalim

# PROBLEM
#
#   In order to provide agnosticism, a controller generator should know
#   which methods the ORM make available to find, save, update, etc.
#
# SOLUTION #1
#
#   ORM should expose a generator builder that tell us what to do.
#   This builder exposes AR methods and return custom implementations.
#

josevalim

jose:~/Work/github/rails/railties$[gen*] ruby bin/gen model
Usage:
  bin/gen model NAME [field:type, field:type] [options]

Options:
  -o, [--orm=NAME]             # Orm to be invoked
                               # Default: active_record
  -t, [--test-framework=NAME]  # Test framework to be invoked
                               # Default: test_unit

josevalim

  # Configure generators default options.
  config.generators do |g|
    g.rails           :helper => true, :stylesheets => true
    g.orm             :active_record, :migration => true, :timestamps => true
    g.template_engine :erb, :layout => true
    g.test_framework  :test_unit, :fixtures => true
  end

josevalim

class UsersController < ApplicationController
  respond_to :html, :xml

  # GET /users
  # GET /users.xml
  def index
    @users = User.all
    respond_with(@users)
  end

josevalim

class UsersController < ApplicationController
  respond_to :html, :xml, :json

  # GET /users
  # GET /users.xml
  def index
    @users = User.all
    respond_with(@users)
  end

josevalim

class ActionController::Presenter
  attr_reader :controller, :request, :format, :resource, :resource_location

  def initialize(controller, resource)
    @controller = controller
    @request = controller.request
    @format = controller.formats.first

    @resource = resource.is_a?(Array) ? resource.last : resource
    @resource_location = resource

josevalim

module InheritedResources
  module Userstamp
    def create_resource(obj)
      record_user(obj, :creator, :updater)
      super
    end
 
    def update_resource(obj, *args)
      record_user(obj, :updater)
      super

josevalim

## Optimizing instrumentation

# Master

overhead index template_1 partial partial_10 coll_10 partial_100 coll_100 uniq_100
     129   198        250     224        802     630        6274     4411     4659

overhead index template_1 partial partial_10 coll_10 partial_100 coll_100 uniq_100
     128   195        247     222        798     621        6026     4314     4547

josevalim

## Problem: change where to redirect on save with success

# scaffold respond_with
def create
  @post = Post.new(params[:post])
  flash[:notice] = "Post was successfully created" if @post.save
  respond_with(@post)
end

# changed respond_with

josevalim

# Instead of:
module MailForm::Callbacks
  def self.extended(base)
    base.class_eval do
      include ActiveSupport::Callbacks
      define_callbacks :create, :terminator => "result == false", :scope => [:kind, :name]
    end
  end
 
  def before_create(*args, &block)