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

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Plone Meta Workflow https://codecov.io/gh/collective/collective.z3cform.norobots/graph/badge.svg?token=DgZ7MzmVMr Latest Version Egg Status

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collective.z3cform.norobots provides a "human" captcha widget based on a list of question/answer(s).

This captcha can be used :

  • as a plone.app.discussion (Plone Discussions) captcha plugin
  • as a z3c form field
  • as a macro in a custom form
  • as a PloneFormGen field with collective.pfg.norobots

The widget is based on z3c.form.TextWidget.

Since version 1.4, questions configuration uses a dedicated control panel (using plone.app.registry) instead of a simple properties sheet. An upgrade step provides migration from earlier versions.

Interface is translated in the following languages: Czech [cs], Danish [da], German [de], Basque [eu], Spanish [es], Suomeksi [fi], French [fr], Dutch [nl], Simplified Chinese [zh_CN], Italian [it] and Russian [ru].

I have tested this release with Plone 4.3.10, Plone 5.0.5. Since version 2.0 Plone 6 is supported.

See previous releases for old Plone versions.

Screenshot

Screenshot

Getting the module - pip based

Add collective.z3cform.norobots to your requirements.txt

Getting the module - buildout based

Add collective.z3cform.norobots to your plone.recipe.zope2instance buildout section e.g.:

[instance]
...
eggs =
    Plone
    ...
    collective.z3cform.norobots

...

zcml =
    ...
    collective.z3cform.norobots

Or, you can add it as a dependency on your own product setup.py:

install_requires=[
    ...
    'collective.z3cform.norobots',
],

Enabling the module

In the Addons control panel, install "Norobots captcha field (collective.z3cform.norobots)".

Add a new question

In the "Norobots widget settings" control panel, add a new line in the field "Norobots question::answer":

your_question::the_answer

Example : What is 10 + 12 ?::22

Answer can contain multiple values delimited by semicolon:

your_question::the_answer;another_answer

Example : What is 5 + 5 ?::10;ten

Quickly test ?

Checkout collective.z3cform.norobots and use venv and pip to test the module:

python3 -m venv ./venv
source venv/bin/activate
(venv) pip install mxdev
(venv) pip install -r requirements-mxdev.txt
(venv) pip install cookiecutter
(venv) cookiecutter -f --no-input --config-file instance.yml https://github.com/plone/cookiecutter-zope-instance
(venv) runwsgi -v instance/etc/zope.ini

Go to http://localhost:8080, add a new Plone Site and install collective.z3cform.norobots (see above).

Launch tests:

(venv) pip install tox
(venv) tox

Launch code coverage:

(venv) tox -e coverage

and open with a browser htmlcov/index.html

In the Discussion control panel, activate anonymous comments then select "Norobots" for the captcha. This enable the captcha for anonymous users.

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.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.z3cform's Form wrapper
NorobotsFormView = wrap_form(NorobotsForm)

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

In your configure.zcml you have to add the following adapter, to make the validation work.

<adapter factory=".contact_info.NorobotsValidator" />

For more information see contact_info.py in the plone_forms directory.

To activate this example, add <include package=".plone_forms" /> in the package's configure.zml file and open http://localhost:8080/Plone/@@z3cform-contact-info

See browser/norobots_macro.pt available through @@norobots_macro browser page.

  • In a fresh Plone 5.0.5 the captcha widget does not appear in the comments form even if Norobots is the selected captcha. Installing an other captcha like plone.formwidget.captcha solve this problem (sic!). In my website, updated from Plone 5.0.4 to 5.0.5, all is ok.
  • I have the following error when launching the tests: "ImportError: No module named lxml.html" => In order to run the tests you need lxml. You can add for example "z3c.form [test]" to your buildout. See http://plone.293351.n2.nabble.com/Custom-Dexterity-Widgets-td5594532.html for more details.

Source code is hosted on Github.

Source code and an issue tracker is hosted on Github.

  • Sylvain Boureliou [sylvainb]
  • Mikel Larreategi [erral]
  • Aijun Jian
  • Radim Novotny [naro]
  • Thomas Clement Mogensen [tmog]
  • Peter Mathis [petschki]
  • Petri Savolainen [petri]
  • Helmut Toplitzer
  • Luca Fabbri [keul]
  • Andrea Cecchi [cekk]
  • [serge73]
  • [1letter]

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

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