module HasAttachments
  extend ActiveSupport::Concern

  included do

    has_many :attachments, -> { order :position }, dependent: :destroy, as: :attachable_for, class_name: "Attachment"
    has_many :assets, through: :attachments

    has_many :assets,
             through: :attachments,
             source: :asset

    #has_many :images,
    #         -> { with_attached_file.where('assets.content_type LIKE ?', "image/%") },
    #         through: :attachments,
    #         source: :asset
#
    #has_many :images_favorites_first,
    #         -> { with_attached_file.where('assets.content_type LIKE ?', "image/%").reorder('attachments.is_favorite DESC', 'attachments.position ASC') },
    #         through: :attachments,
    #         source: :asset


    accepts_nested_attributes_for :attachments, allow_destroy: true

  end


  def icon
    self.assets.map{ |asset| return asset if asset.file and asset.file.content_type.starts_with?('image/') }
    nil
  end




end