```ruby
class Entry
  include Mongoid::Document
  include Mongoid::Timestamps

  field :script, :type => Binary
  field :score, :type => Integer

  embeds_many :comments
  embedded_in :challenge, :inverse_of => :entries
  referenced_in :user

  validates_length_of :script, :minimum => 1, :maximum => MAX_FILESIZE

  def owner?(current_user)
    user == current_user
  end
end
```

Use new Hash syntax in Entry model
user
```ruby
class Entry
  include Mongoid::Document
  include Mongoid::Timestamps

  field :script, type: Binary
  field :score, type: Integer

  embeds_many :comments
  embedded_in :challenge, inverse_of: :entries
  referenced_in :user

  validates_length_of :script, minimum: 1, maximum: MAX_FILESIZE

  def owner?(current_user)
    user == current_user
  end
end
```
assistant