collective.z3cform.norobots: a captcha based on questions and answers
I have released a new captcha widget/field for z3c.form in Plone. Unlike other captcha fields that are based on images, this captcha is based on a predefined list of questions and answers.
collective.z3cform.norobots provides a “human” captcha widget based on a list of questions/answers.
The widget is based on z3c.form.TextWidget.
- tested with Plone 3.3.2
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, b y 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
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 the example contact_info.py in the plone_forms directory in the package.
Integrated in a join form:
With an error: