Introduction
============

I am a fan of James Golick's resource_controller (r_c for short) at
http://github.com/giraffesoft/resource_controller.  However, on a project I am
working, I found that when my app performs create, update, or destroy
operations on ActiveRecord objects, it often needs to perform operations
involving other ActiveRecord objects as well.  Ideally, all this should be
done in a database transaction.  But, I have not found a good way to do when
using r_c.

So, I came up with a plugin to override r_c's built-in create, destroy, and
update actions, thus allowing my app to optionally perform additional
operations as needed on a per action, per controller basis.


Example
=======

class Project < ActiveRecord::Base
  has_many :roles, :depdendent => :destroy
end

class Role < ActiveRecord::Base
  belongs_to :project
end

class ProjectsController < ResourceController::Base

  private

  # define this method to override default behavior
  def create_object
    Project.transaction do
      object.save!
      create_default_roles
    end
    true # return true if object creation is successful
  end

  def create_default_roles
    # create some roles
  end

  def update_object
    super # invoke the default behavior
    # do something else
    true
  end

  # no need to define destroy_object because default behavior
  # is what we want

end


Copyright (c) 2009 bitaxis.com, released under the MIT license