mahara-contributors team mailing list archive

[Aaron Wells <1599241@xxxxxxxxxxxxxxxxxx>]

... in other words in the file htdocs/artefact/comment/lib.php, you find
the function "add_comment_form", which contains the definition for the
comments form. In the "if (!$USER->is_logged_in())" block, you add
$form['elements']['captcha'] = array('type' => 'captcha').

You'll also need to go to the Site Configuration page, enable recaptcha,
and put in a recaptcha private & public key (you can get these at
recaptcha.org). Once you've done that, recaptcha will show up on the
comment form for logged-out users.

As mentioned above, though, this basic implementation of it doesn't
completely work. I think you'd probably need to hook into Pieform's
clumsy Javascript side of things to get the Javascript to properly load
up the recaptcha after submitting the form. A starting point for that
might be in the file htdocs/lib/form/elements/captcha.php, and looking
at how we do it for TinyMCE (htdocs/lib/form/elements/wysiwyg.php) might
be a useful starting point.

Cheers,
Aaron

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https://bugs.launchpad.net/bugs/1599241

Title:
  recaptcha for anonymous comments on public pages

Status in Mahara:
  Confirmed

Bug description:
  While it was imperative to give public a voice if desired on selected
  public page, the fact that comments are anonymous let spammers do
  their unwanted actions.

  It was added in https://bugs.launchpad.net/mahara/+bug/547384 the
  necessity to set a recaptcha feature in implementing public comment. I
  has not been done.

  Hence the request :

  If public comment is allowed on a page and the visitor is not
  authenticated, there should be a recaptcha feature to limit spam.

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