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I have what I believe is a slightly unusual requirement for comments. I'm trying to figure out how to implement this:

  1. Comment form should always appear at the bottom of the page (this helps users understand they can submit a comment especially if there are no comments yet for a given article)
  2. If the user is registered the comment form should be enabled.
  3. If the user is anonymous the comment form should be disabled and provide a link to registration

It seems like the comment module is generally built to be on or off. Any recommendations on exposing it as a disabled form?

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I didn't know this until I just tried it but you can use a hook_form_alter() function in a custom module and simply set the whole $form to disabled...this disables all child elements as well. Combine it with the user_is_anonymous() function and you should be set:

function MYMODULE_form_comment_form_alter(&$form, &$form_state, $form_id) { if (user_is_anonymous()) { $form['#disabled'] = TRUE; // Add a link: $form['register_link'] = array( '#markup' => l('Click here to register...', 'user/register') ); } }
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