AgnosticPresenters

AgnosticPresenters is a gem that allow you to have presenters for your objects with a minimal syntax (because we are lazy).

TODO

• Rename Base and Helper.
• Do a proper tweak of Proxen

Usage

require "rubygems"
gem "yeastymobs-agnostic_presenters"
require "agnostic_presenters"

Class.send :include, AgnosticPresenters::Helper

class MyModel

  # ...
  
  presenters do
    
    def myattribute
      "#{object.fancy} with a presenter"
    end
    
  end
end

@model = MyModel.new(:myattribute => "fancy")
@model.myattribute  # => fancy
@model.myattribute! # => fancy with a presenter

And you can share helpers between presenters with just a line:

module Helpers
  def escape(string)
    Rack::Utils.escape(string)
  end
end

AgnosticPresenters::Base.send :include, Helpers

Usage with Rails

config.gem "yeastymobs-agnostic_presenters", :lib => "agnostic_presenters/activerecord", :source => "http://gems.github.com"

And now you have presenters in your models which include ActionView helpers:

class Article < ActiveRecord::Base
  presenters do
  
    def title
      h object.title
    end
    
    def slug
      object.title.parameterize
    end
    
  end
end

If you use another ORM, just change "activerecord".

Supported ORMs

• ActiveRecord "agnostic_presenters/activerecord"
• MongoMapper "agnostic_presenters/mongomapper"

Credits

• Nicolas Mérouze
• A part of code is taken from active-record-presenters plugin
• The proxy part is from nakajima-proxen gem