Image captcha does not appear on the canvas page
Posted Thu, 05/13/2010 - 09:42 by paucku

When I tried Drupal for Facebook I wanted to test it at your site on the canvas page.

The image captcha did not appear at all. So I could't submit my Forum topic from the canvas and went to the normal site to do it.

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maybe fixed?

by Dave Cohen - 05/14/2010 - 04:14

Thanks for the report. I'm not sure what was wrong.

Just today, I switched the canvas pages from FBML to iframe. Hopefully that fixed the problem. If anyone has trouble submitting from canvas pages please do let me know.

Problem with other captcha

by 100001441625687... - 08/08/2010 - 18:04

I am using the Simple News modules on my site. When clicking on "manage newsletter subscriptions" on my fb canvas page...the captcha does not show up. I am using fbml instead of iframe. I haven't tried switching to iframe to see if that fixes it...I don't like iframe.

You could try a form alter

by Dave Cohen - 08/14/2010 - 05:57

You could try a form alter something like this, to use facebook's captcha on canvas pages:

/**                                                                            
* Implementation of hook_form_alter.                                          
*/
function dff_custom_form_alter($form_id, &$form) {
  if (fb_canvas_is_fbml()) {
    // We're in a facebook callback, use Facebook's captcha                    
    if ($form['captcha']) {

      // Prevent fb_canvas from changing the form's action                     
      fb_canvas_form_action_via_facebook($form);

      // Replace captcha elements with FBML                                    
      $form['captcha'] = array('#type' => 'markup',
                               '#value' => '<fb:captcha showalways=false />',
                               '#validate' => array('dff_custom_captcha_validate' => array()),
      );
    }
    
  }
}

{Sorry, something is wrong with the spacing on my code filter!)