The gem adds "Presenter" functionality into Rails application.

Add this line to your application's Gemfile:

gem 'base_presenter'

And then execute:

$ bundle

Or install it yourself as:

$ gem install base_presenter

Usa a generator

rails g base_presenter:install [model_name]

Add line

  include BasePresenter::ApplicationHelper

to ApplicationHelper module in Rails application.

For model_name equal 'example' we should get file in director root_rails/app/presenters/example_presenter.rb which we can improve. For example:

class ExamplePresenter < ApplicationPresenter
  presents :example
  delegate :id, to: :example

  def name
    "Name"
  end

  def self.class_name
    "Example"
  end

  def link_to_example
    handle_none example.name do
      link_to(example.name, example_path(example))
    end
  end

end

and in file show.html.erb with:

• object @example

<% present @example do |presenter| %>
  Id: <%= presenter.id %>
  Name: <%= presenter.name %>
  Url: <%= presenter.link_to_example %>
<% end %>

• class Example

<% present Example do |presenter| %>
  Class name: <%= presenter.class_name %>
<% end %>

Methods of BasePresenter

Method returns span with 'None given' when value is blank

#handle_none(value)

BasePresenter uses the MIT license. Please check the LICENSE file for more details.