```ruby
class Resource < ActiveRecord::Base
  include AutoHtml

  belongs_to :curriculum
  belongs_to :user

  scope :ordered, -> { order(updated_at: :desc) }

  validates :title, presence: true

  auto_html_for :website do
    html_escape
    # image
    # gist
    metacafe
    # google_map
    ted
    twitter
    vimeo
    youtube(:width => 400, :height => 250, :autoplay => false)
    link :target => "_blank", :rel => "nofollow"
    simple_format
  end

end
```

Comment out TED link embed since it doesn't work yet.
user
```ruby
class Resource < ActiveRecord::Base
  include AutoHtml

  belongs_to :curriculum
  belongs_to :user

  scope :ordered, -> { order(updated_at: :desc) }

  validates :title, presence: true

  auto_html_for :website do
    html_escape
    # image
    # gist
    metacafe
    # google_map
    # ted
    twitter
    vimeo
    youtube(:width => 400, :height => 250, :autoplay => false)
    link :target => "_blank", :rel => "nofollow"
    simple_format
  end

end
```
assistant