title: what is the devise_mapping variable and how can I include it?
body: <p>I'm trying to implement authentication with Devise in my Rails application (Rails 2.3.8, Devise 1.0.7, mongrel running on Windows Vista). But I'm getting the following error:</p>
  
  <pre><code>undefined local variable or method `devise_mapping' for #&lt;ActionView::Base:0x6d63890&gt;
  </code></pre>
  
  <p>This is when I use the auto-generated partial _devise_links.html.</p>
  
  <pre><code>&lt;%- if controller_name != 'sessions' %&gt;
    &lt;%= link_to t('devise.sessions.link'), new_session_path(resource_name) %&gt;&lt;br /&gt;
  &lt;% end -%&gt;
  
  &lt;%- if devise_mapping.registerable? &amp;&amp; controller_name != 'registrations' %&gt;
    &lt;%= link_to t('devise.registrations.link'), new_registration_path(resource_name) %&gt;&lt;br /&gt;
  &lt;% end -%&gt;
  
  &lt;%- if devise_mapping.recoverable? &amp;&amp; controller_name != 'passwords' %&gt;
    &lt;%= link_to t('devise.passwords.link'), new_password_path(resource_name) %&gt;&lt;br /&gt;
  &lt;% end -%&gt;
  
  &lt;%- if devise_mapping.confirmable? &amp;&amp; controller_name != 'confirmations' %&gt;
    &lt;%= link_to t('devise.confirmations.link'), new_confirmation_path(resource_name) %&gt;&lt;br /&gt;
  &lt;% end -%&gt;
  
  &lt;%- if devise_mapping.lockable? &amp;&amp; controller_name != 'unlocks' %&gt;
    &lt;%= link_to t('devise.unlocks.link'), new_unlock_path(resource_name) %&gt;&lt;br /&gt;
  &lt;% end -%&gt;
  </code></pre>
  
  <p>Any ideas on how to fix this? I'm assuming the devise_mapping variable is not getting included in my views, but what do I do about it?</p>