simple_presenter

Installation

gem install simple_presenter

Usage

class User < ActiveRecord::Base
  # implements the following attributes: name, email, password_hash, password_salt
end

class UserPresenter < Presenter
  expose :name, :email
end

user = UserPresenter.new(User.first)
users = UserPresenter.map(User.all)

If you’re using Simple Presenter within Rails, presenters also have access to:

• route helpers: just use the routes or r methods
• view helpers: just use the helpers or h methods
• I18n methods: just use the translate, t, localize or l methods

If you want to to use *_url route methods, make sure you set the default_url_options option. You can use the config.simple_presenter.default_url_options method, which defaults to config.action_mailer.default_url_options. You can add something like the following to your config/environments/development.rb, for instance:

config.simple_presenter.default_url_options = {:host => "localhost:3000"}

For additional usage, check the specs.

TO-DO

• Recognize ActiveRecord objects and automatically expose attributes used by url and form helpers (like Model.model_name, Model#to_key, and Model#to_param).
• Override respond_to? to reflect exposed attributes.

Troubleshooting

If you’re having problems because already have a class/module called Presenter that is conflicting with this gem, you can require the namespace and inherit from SimplePresenter::Base.

require "simple_presenter/namespace"

class UserPresenter < SimplePresenter::Base
end

If you’re using Rails/Bundler or something like that, remember to override the :require option.

Gemfile

source :rubygems

gem “simple_presenter”, :require => “simple_presenter/namespace”

Maintainer

• Nando Vieira (http://nandovieira.com.br)

License

(The MIT License)

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
‘Software’), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED ‘AS IS’, WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.