Module: Refinery::Slideshow::Concerns::ModelWithSlideShow::ClassMethods

Defined in:
lib/refinery/slideshow/concerns/model_with_slideshow.rb

Instance Method Summary collapse

Instance Method Details

#attach_slideshow(slideshow_relationship_name) ⇒ Object 



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# File 'lib/refinery/slideshow/concerns/model_with_slideshow.rb', line 13

def attach_slideshow slideshow_relationship_name

  # We create the relationship
  belongs_to slideshow_relationship_name, class_name: "Refinery::Slideshow::Slideshow", autosave: true

  # We create a method to define if this object needs an slideshow. By default it needs it.
  define_method "needs_#{slideshow_relationship_name}?" do
    true
  end

  # In slideshow accesor we check if this record has no slideshow but should have it, then we create a new slideshow
  define_method slideshow_relationship_name do

    # We try to get the slideshow using the relationship
    local_slideshow = Refinery::Slideshow::Slideshow.find(self[:"#{slideshow_relationship_name}_id"]) unless self[:"#{slideshow_relationship_name}_id"].nil?

    # If slideshow is nil, and the object has been already saved and the object needs an slideshow then we create it
    if local_slideshow.nil? && !self.new_record? && self.send("needs_#{slideshow_relationship_name}?")
      local_slideshow = self.send("build_#{slideshow_relationship_name}", attached: self)
      send "#{slideshow_relationship_name}=", local_slideshow
      self.save
    end

    local_slideshow

  end

  # In slideshow assignation we should attach current object to the slideshow
  define_method "#{slideshow_relationship_name}=" do |slideshow|
    slideshow.attached = self
    super(slideshow)
  end

  # Before saving we must check if this new slideshow has been created and create it otherwise
  after_save do |record|
    if self.send("needs_#{slideshow_relationship_name}?")
      record.send(slideshow_relationship_name).nil?
    end
  end
end