```ruby
class Comment < ActiveRecord::Base

  include ActsAsCommentable::Comment

  belongs_to :commentable, :polymorphic => true

  default_scope -> { order('created_at ASC') }

  # NOTE: install the acts_as_votable plugin if you
  # want user to vote on the quality of comments.
  #acts_as_voteable

  # NOTE: Comments belong to a user
  belongs_to :user
end
```

Fix for Mass Assigment Security
user
```ruby
class Comment < ActiveRecord::Base

  include ActsAsCommentable::Comment

  belongs_to :commentable, :polymorphic => true

  default_scope -> { order('created_at ASC') }

  # NOTE: install the acts_as_votable plugin if you
  # want user to vote on the quality of comments.
  #acts_as_voteable

  # NOTE: Comments belong to a user
  belongs_to :user

  # NOTE: For Mass Assignment Security
  attr_accessible :title, :comment
end
```
assistant