Model Decorator

gistfile1.rb

## 
# Abstract class designed to decorate ActiveRecord models with methods for
# acting on instances which are stored in both local and remote databases.
#
# @note Decorator instances should be initialized with an instance of the ActiveRecord
#   model to be acted on. This instance is available within decorators as {#object}.
# 
# @abstract Subclass and override {#create}, {#update}, {#destroy} to implement.
# 
class AbstractDecorator < SimpleDelegator
  
  #
  # Class-level methods which simply delegate to a new instance of the decorator.
  #
  class << self
    def create(target)
      new(target).create
    end
    
    def update(target)
      new(target).update
    end
    
    def destroy(target)
      new(target).destroy
    end
  end

  #
  # Allow use of the cleaner {#object} instead of {#__getobj__} to reference the base record.
  # 
  alias_method :object, :__getobj__
    
  #  
  # Create the {#object}.
  # 
  # @abstract 
  # 
  # @return [Boolean] True if operation succeeds, False otherwise
  #
  def create
  end
  
  #
  # Update the {#object}.
  # 
  # @abstract 
  # 
  # @return [Boolean] True if operation succeeds, False otherwise
  #
  def update
  end
  
  #
  # Destroy the {#object}.
  # 
  # @abstract 
  # 
  # @return [Boolean] True if operation succeeds, False otherwise
  #
  def destroy
  end
  
end