collection_decorator.rb

class CollectionDecorator
  def self.page(objects_relation, page = 1)
    CollectionDecorator.new(objects_relation.order("created_at").page(page))
  end

  def initialize(objects_relation)
    @objects_relation = objects_relation
  end

  include Enumerable

  def each(&block)
    if block_given?
      @objects_relation.each { |p| block.call(p.decorate) }
    else
      to_enum(:each)
    end
  end

  def to_ary
    to_a
  end

  def respond_to?(method)
    @objects_relation.respond_to?(method)
  end

  def respond_to_missing?(method)
    respond_to?(method)
  end

  def method_missing(method, *args, &block)
    @objects_relation.send(method, *args, &block)
  end
end