collective.z3cform.norobots 1.0

Human readable captcha for z3cform

Introduction
============

collective.z3cform.norobots provides a "human" captcha widget based on a list of
questions/answers.

The widget is based on z3c.form.TextWidget.

Requirements
------------
* tested with Plone 3.3.2
* plone.app.z3cform

Installation
============
Just a simple easy_install collective.z3cform.norobots is enough.

Alternatively, buildout users can install collective.z3cform.norobots as part of
a specific project's buildout, by having a buildout configuration such as: ::

[buildout]
...
eggs =
collective.z3cform.norobots
...
[instance]
...
zcml =
collective.z3cform.norobots


In portal_setup, apply the profile collective.z3cform.norobots:default.

Add a new question
===================

In the Plone Property Sheet "norobots_properties"
(portal_properties/norobots_properties), add a new property:
::

Name: The question id (ex: "question4")
Value: your_question::the_answer (ex: "What is 10 + 12 ?::22")
Type: string

Usage
=====
You can use this widget setting the "widgetFactory" property of a form field:
::

from zope import interface, schema
from z3c.form import interfaces, form, field, button, validator
from plone.app.z3cform.layout import wrap_form

from collective.z3cform.norobots.i18n import MessageFactory as _
from collective.z3cform.norobots.widget import NorobotsFieldWidget
from collective.z3cform.norobots.validator import NorobotsValidator

class INorobotsForm(interface.Interface):
norobots = schema.TextLine(title=_(u'Are you a human ?'),
description=_(u'In order to avoid spam,
please answer the question below.'),
required=True)

class NorobotsForm(form.Form):
fields = field.Fields(INorobotsForm)
fields['norobots'].widgetFactory = NorobotsFieldWidget

# wrap the form with plone.app.z3cform's Form wrapper
NorobotsFormView = wrap_form(NorobotsForm)

# Register Norobots validator for the correponding field in the
IContactInfo interface
validator.WidgetValidatorDiscriminators(NorobotsValidator,
field=INorobotsForm['norobots'])

for more information see contact_info.py in the plone_forms directory in the
package.

Credits
========
|makinacom|_

* `Planet Makina Corpus <http://www.makina-corpus.org>`_
* `Contact us <mailto:[e-mail]>`_

.. |makinacom| image:: http://depot.makina-corpus.org/public/logo.gif
.. _makinacom: http://www.makina-corpus.com

Changelog
=========

1.0
----------------

* Initial release [Sylvain Boureliou]