silva.captcha 1.3

Captcha support for Silva

Copyright (c) 2008-2009, Infrae. All rights reserved. See also LICENSE.txt

Captcha Support for Silva

This is a captcha support for Silva. It works with the help of collective.captcha, and plone.keyring.

After installing the extension, you can either use a formlib widget, or ask the captcha directly.

You can get the captcha image in your template the following way:

<tal:captcha tal:define="captcha nocall:here/@@captcha"
             tal:content="structure captcha/image_tag">
</tal:captcha>

You can get the captcha as a sound file like this:

<div class="captchaAudio"
     tal:define="captcha nocall:here/@@captcha">
   <a href="#" target="_blank"
      tal:attributes="href captcha/audio_url">Audio version</a>
</div>

You can validate an captcha entry like this:

from zope.component import getMultiAdapter


captcha = getMultiAdapter((self.context, self.request), name='captcha')
if not captcha.verify(input):
    # Bad value
else:
    # Good value

This extension require at least Silva 2.0.7 or higher. You can have more information about collective.captcha.

Use in Python Script

In your Python Script/Code Sources, you can use for example:

from silva.captcha import validate

request = context.REQUEST
input = request.form.get('captcha_field', None)
if not validate(context, request, input):
    # Bad value
else:
    # Good value

This will validate (or not) the input of the captcha.

Installation

If you installed Silva using buildout, by getting one from the Infrae SVN repository, or creating one using Paster, you should edit your buildout configuration file buildout.cfg to add or edit the following section:

[instance]

eggs = ...
      silva.captcha

zcml = ...
      silva.captcha

If the section instance wasn’t already in the configuration file, pay attention to re-copy values for eggs and zcml from the profile you use.

After you can restart buildout:

$ ./bin/buildout

If you don’t use buildout, you can install this extension using easy_install, and after create a file called silva.captcha-configure.zcml in the /path/to/instance/etc/package-includes directory. This file will responsible to load the extension and should only contain this:

<include package="silva.captcha" />

Latest version

The latest version is available in a Subversion repository.

Changelog

1.3 (2010/10/18)

• Don’t rely anymore on collective.captcha: the implementation is now done here. This fix compatibility with Zope 2.12. This implementation rely on default Silva secret service, and don’t require anymore any installation task. It requires at least Silva 2.3.

• Add a Captcha field and a Captcha widget for zeam.form.

• This extension is now grokked.

1.2.1 (2009/11/18)

• Fix tests if GenericSetup is available in the product folder.

1.2 (2009/08/17)

• Added Formulator field to easily add a captcha to Formulator forms.

• Fix installation in Silva 2.2.

1.1 (2008/11/12)

• Add a validate method for Python Scripts and Code sources.

• Don’t make Silva Root become a local site if it’s already the case (i.e. Silva 2.2).

1.0.1 (2008/06/04)

• Fix broken extension uninstall,

• Add simple test to test extension install/uninstall.

1.0 (2008/05/27)

• Initial release.