vfonic/liquid4-rails5

module Liquid
  module Rails
    module Droppable
      extend ActiveSupport::Concern

      def to_liquid
        drop_class.new(self)
      end
      alias_method :dropify, :to_liquid

      def drop_class
        self.class.drop_class
      end

      module ClassMethods
        def drop_class
          if self.name == 'ActiveRecord::Associations::CollectionProxy' ||
             self.name == 'ActiveRecord::AssociationRelation'
            Liquid::Rails::CollectionDrop
          else
            "#{self.name}Drop".constantize
          end
        end
      end
    end
  end
end