Module: FactoryBurgers::Presenters

Defined in:
lib/factory_burgers/presenters.rb,
lib/factory_burgers/presenters/base.rb

Overview

Module for adding, finding, and using application data presenters. Presenters are used to define what attributes to show in the front end, what to call the built objects, and managing links to the objects in the application if they exist.

Defined Under Namespace

Classes: Base

Class Method Summary collapse

Class Method Details

.build_presenter(klass, &blk) ⇒ Object

block provided to ‘present`; build a presenter class



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# File 'lib/factory_burgers/presenters.rb', line 46

def build_presenter(klass, &blk)
  PresenterBuilder.new(klass).build(&blk)
end

.data_for(object) ⇒ Object

TODO: use this from FactoryOutput



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# File 'lib/factory_burgers/presenters.rb', line 36

def data_for(object)
  presenter = presenter_for(object) or return nil
  {
    type: presenter.type,
    attributes: presenter.attributes,
    link: presenter.link_path,
  }
end

.present(klass, with: nil, &blk) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/factory_burgers/presenters.rb', line 11

def present(klass, with: nil, &blk)
  raise ArgumentError, "Provide `with` or block, but not both" if with && blk

  presenter = with || build_presenter(klass, &blk)
  @presenters[klass.to_s] = presenter
end

.presenter_class_for(object) ⇒ Object 



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# File 'lib/factory_burgers/presenters.rb', line 27

def presenter_class_for(object)
  matching_class = object.class.ancestors.map(&:name).find do |class_name|
    @presenters.key?(class_name)
  end

  return matching_class ? @presenters[matching_class] : FactoryBurgers::Presenters::Base
end

.presenter_for(object) ⇒ Object 



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# File 'lib/factory_burgers/presenters.rb', line 23

def presenter_for(object)
  presenter_class_for(object).new(object)
end

.purge! ⇒ Object 



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# File 'lib/factory_burgers/presenters.rb', line 18

def purge!
  @links = {}
  @presenters = {}
end