-# And you can use it in a view like so:

- form_for :user, @user, register_path do |f|
  %fieldset
    != f.label :name
    != f.text_field :name
    - if f.error(:name) == "blank"
      .error.name_blank You don't have a name??
      
    != f.label :email
    != f.text_field :email
    - case f.error(:email)
    - when "blank"
      .error.email_blank You don't have an email??
    - when "format"
      .error.email_format That doesn't look like an email address!
    - when "taken"
      .error.email_taken
        There is an account already registered with that email address.
        %a{:href => root_path(:email => @user.email)} Log in instead?