Module: Blush::HasPresenter

Defined in:
lib/blush/has_presenter.rb

Overview

Tell a model that it has a presenter

This is included in all models

Use with defaults:

has_presenter

Use with custom accessor:

has_presenter :accessor_name

Use with options:

has_presenter { class: 'ThingPresenter', helper_name: :foo }

Instance Method Summary collapse

Instance Method Details

#has_presenter(accessor_name = {}, options = nil) ⇒ Object 



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# File 'lib/blush/has_presenter.rb', line 17

def has_presenter(accessor_name = {}, options = nil)
  class_attribute :blush_options

  options, accessor_name = accessor_name, options unless options
  self.blush_options = options
  self.blush_options[:accessor_name] = accessor_name || Blush.config.accessor_name

  # defines the accessor
  define_method(self.blush_options[:accessor_name]) do
    accessor_name = "@#{self.blush_options[:accessor_name]}"
    presenter_class = (self.blush_options[:class] || "#{self.model_name}Presenter").constantize
    instance_variable_get(accessor_name) || instance_variable_set(accessor_name, presenter_class.new(self))
  end

  # defines the helper
  define_method(self.blush_options[:helper_name] || Blush.config.helper_name) do |method, *args, &block|
    presenter.try(method, *args, &block) || send(method, *args, &block)
  end
end