```ruby
class Entry < HyperactiveResource

  belongs_to :blog, :nested => true

  def comments
    Comment.find_all_by_content_id(self.id)
  end
  
  def to_liquid(options = {})
    @article_drop ||= Liquid::ArticleDrop.new self, options
  end
  
  def images
    self.mediafiles.select{|mediafile| mediafile.mediafile_type == "Image"}
  end

  def audiofiles
    self.mediafiles.select{|mediafile| mediafile.mediafile_type == "Audiofile"}
  end
  
  def blog_id
    self.prefix_options[:blog_id]
  end

end```

Make child classes available in Entry as well as Article.
user
```ruby
class Entry < HyperactiveResource

  belongs_to :blog, :nested => true

  def comments
    Comment.find_all_by_content_id(self.id)
  end
  
  def to_liquid(options = {})
    @article_drop ||= Liquid::ArticleDrop.new self, options
  end
  
  def images
    self.mediafiles.select{|mediafile| mediafile.mediafile_type == "Image"}
  end

  def audiofiles
    self.mediafiles.select{|mediafile| mediafile.mediafile_type == "Audiofile"}
  end
  
  def blog_id
    self.prefix_options[:blog_id]
  end

  #Define class for api child categories
  class Category < Section
    class Child < Category
    end
  end
  
  # Shell class for Entry::Author
  class Author < Author
  end

end```
assistant