plone.app.z3cform

A Plone specific integration and HTML mark-up for z3c.form.

This is a Plone core package.

Introduction

This Plone package is aimed for developers who want to create forms in Python code.

Please read the documentation for z3c.form, which contains important information about using z3c.form in Zope 2 in general. For the most part, that package contains the "active" parts that you need to know about, and this package provides "passive" overrides that make the forms integrate with Plone.

Features

The following Plone and z3c.form integration is added

• Plone main_template.pt integration
• Plone specific widget frame
• Date/time pickers
• WYSIWYG widget (TinyMCE visual editor with Plone support)
• CRUD forms

Out of the box form templates

The form and widget templates are applied in the following order

• plone.app.z3cform specific
• plone.z3cform specific
• z3c.form specific

plone.app.z3cform package overrides the @@ploneform-macros view from plone.z3cform, using standard Plone markup for form fields, fieldsets, etc.

All the macros described in plone.z3cform are still available. In addition, you can use the widget_rendering macro to render all the default widgets, but none of the fieldsets (groups) or the fieldset headers (which would be rendered with the fields macro).

Each widget is rendered using the @@ploneform-render-widget view, which by default includes the widget's label, required indicator, description, errors, and the result of widget.render(). This view may be overridden for particular widget types in order to customize this widget chrome.

Customizing form behavior

Form method

If your form instance defines a property called method it allows you to set whether form is HTTP POST or HTTP GET. The default is POST. This translates to <form method="post"> attribute.

Example:

class HolidayServiceSearchForm(form.Form):
        """ Example search form of which results can be bookmarked.

        Bookmarking is possible because we use HTTP GET method.
        """

        method = "get"

Form action

Form action property defines HTTP target where the form is posted. The default is the same page where the form was rendered, request.getURL().

Example:

class HolidayServiceSearchForm(form.Form):

    def action(self):
        """ Redefine  attribute.

        We use URL fragment to define the <a> anchor
        were we directly scroll at the results when the form is posted,
        skipping unnecessary form fields part. The user can scroll
        back there if he/she wants modify the parameters.
        """

        # Context item URL + form view name + link fragment.
        # This works for HTTP GET forms only.
        # Note that we cannot use request.getURL() as it might contain
        # 1) prior fragment 2) GET query parameters messing up the UrL
        return self.context.absolute_url() + "/holidayservice_view" + "#searched"

Fieldsets and tabs

You can fieldsets to your form if you subclass the form from z3c.form.group.GroupForm. The default behavior of Plone is to turn these fieldsets to tabs (as seen on any Edit view of content item).

You can disable this behavior for your form:

class ReportForm(z3c.form.group.GroupForm, z3c.form.form.Form):

    # Disable turn fieldsets to tabs behavior
    enable_form_tabbing  = False

Unload protection

The default behaviour on Plone is to add a confirm box if you leave a form you have modified without having submitted it.

You can disable this behavior for your form:

class SearchForm(z3c.form.group.GroupForm, z3c.form.form.Form):

    # Disable unload protection behavior
    enable_unload_protection  = False

Autofocus

The default behaviour on Plone Forms is to use the formautofocus pattern to focus the "first" input field.

You can disable this behavior for your form:

class SearchForm(z3c.form.group.GroupForm, z3c.form.form.Form):

    # Disable autofocus behavior
    enable_autofocus = False

CSRF Protection

A common vulnerability affecting web forms is cross-site request forgery (CSRF). This attack occurs when the user of your site visits a third-party site that uses Javascript to post to a URL on your site without the user's knowledge, taking advantage of the user's active session.

plone.app.z3cform can protect against this type of attack by adding a unique token as a hidden input when rendering the form, and checking to make sure it is present as a request parameter when form actions are executed.

To turn on this protection, enable the form's enableCSRFProtection attribute. Example:

class PasswordForm(form.Form):
    """Form to set the user's password."""
    enableCSRFProtection = True

Form main template override

Forms are framed by FormWrapper views. It places rendered form inside Plone page frame. The default FormWrapper is supplied automatically, but you can override it.

Below is a placeholder example with few <select> inputs.

Example reporter.py:

from Products.Five.browser.pagetemplatefile import ViewPageTemplateFile as FiveViewPageTemplateFile
from zope.i18nmessageid import MessageFactory
from zope.schema.vocabulary import SimpleTerm
from zope.schema.vocabulary import SimpleVocabulary

import plone.app.z3cform
import plone.z3cform.templates
import z3c.form
import zope.interface
import zope.schema

_ = MessageFactory('your.addon')


def make_terms(items):
    """ Create zope.schema terms for vocab from tuples """
    terms = [SimpleTerm(value=pair[0], token=pair[0], title=pair[1]) for pair in items]
    return terms


output_type_vocab = SimpleVocabulary(make_terms([("list", "Patient list"), ("summary", "Summary")]))


class IReportSchema(zope.interface.Interface):
    """ Define reporter form fields """
    outputType = zope.schema.Choice(
        title=u"Output type",
        description=u"How do you want the output",
        source=output_type_vocab)

    country = zope.schema.Choice(
        title=u"Country",
        required=False,
        description=u"Which country to report",
        vocabulary="allowed_countries")

    hospital = zope.schema.Choice(
        title=u"Hospital",
        required=False,
        description=u"Which hospital to report",
        vocabulary="allowed_hospitals")


class ReportForm(z3c.form.form.Form):
    """ A form to output a HTML report from chosen parameters """

    fields = z3c.form.field.Fields(IReportSchema)

    ignoreContext = True

    output = None

    @z3c.form.button.buttonAndHandler(_('Make Report'), name='report')
    def report(self, action):
        data, errors = self.extractData()
        if errors:
            self.status = "Please correct errors"
            return

        # Create sample item which we can consume in the page template
        self.output = dict(country="foobar")

        self.status = _(u"Report complete")


# IF you want to customize form frame you need to make a custom FormWrapper view around it
# (default plone.z3cform.layout.FormWrapper is supplied automatically with form.py templates)
report_form_frame = plone.z3cform.layout.wrap_form(ReportForm, index=FiveViewPageTemplateFile("templates/reporter.pt"))

Example configure.zcml:

Example templates/reporter.html:

        <h1 class="documentFirstHeading">

        <div id="content-core">
            <div id="form-input">
                <span>
            </span></div>
            <div id="form-output">
                Chosen country: <b>
            </b></div><b>
        </b></div><b>

Widget frame override

You can override widget templates as instructed for z3c.form. plone.app.z3cform renders a frame around each widget which usually consists of

• Label
• Required marker
• Description

You might want to customize this widget frame for your own form. Below is an example how to do it.

Copy widget.pt to your own package and customize it in way you wish

Add the following to configure.zcml

Create a new marker interface in Python code

from zope.interface import Interface

class IDemoWidget(Interface):
    pass

Then apply this marker interface to all of your widgets in form.update()

from zope.interface import alsoProvides

class MyForm(...):
    ...
    def update(self):
        super(MyForm, self).update()
        for widget in form.widgets.values():
            alsoProvides(widget, IDemoWidget)

Hide fields that have no value

The .empty css class marks the fields that have no value. If you don't want to display these fields in view mode, add the following css in your theme.

.template-view .empty.field {
   display: none;
}

Add additional parameters to widgets

You can add additional parameters to widgets defined in this package via the plone.autoform.widgets.ParameterizedWidget.

from plone.app.z3c.form.widget import DateWidget
MyDateWidget = ParameterizedWidget(DateWidget, wrapper_css_class='event_start')

or via directives

from plone.app.z3c.form.widget import DateWidget


@provider(IFormFieldProvider)
class IMyEventBehavior(model.Schema):

...
    widget('event_start', DateWidget, wrapper_css_class='event_start')
    event_start = schema.TextLine(
        title=_(u'label_event_start'),
        description=_(u'help_event_start'),
        required=True,
    )

Testing

To test plone.app.z3form it is recommended to use plone.app.testing function test layer which will do plone.app.z3cform setup for you. Read plone.app.z3cform manual for further instructions.

If you still need to test forms on lower level in unit tests you need to enable plone.app.z3cform support manually. Below is an example:

import unittest

from zope.interface import alsoProvides
from zope.publisher.browser import setDefaultSkin

from z3c.form.interfaces import IFormLayer

class TestFilteringIntegration(unittest.TestCase):
    """ Test that filtering options work on the form """

    layer = MY_TEST_LAYER_WITH_PLONE

    def setUp(self):
        super(TestFilteringIntegration, self).setUp()
        request = self.layer["request"]
        setDefaultSkin(request)
        alsoProvides(request, IFormLayer) #suitable for testing z3c.form views

    def test_report_form_filtering(self):
        reporter = ReportForm(self.layer["portal"], self.layer["request"])
        reporter.update()

Troubleshooting

Here are some common errors you might encounter with plone.app.z3cform.

ComponentLookupError in updateWidgets()

Traceback (innermost last):
  Module ZPublisher.Publish, line 119, in publish
  Module ZPublisher.mapply, line 88, in mapply
  Module ZPublisher.Publish, line 42, in call_object
  Module plone.z3cform.layout, line 64, in __call__
  Module plone.z3cform.layout, line 54, in update
  Module getpaid.expercash.browser.views, line 63, in update
  Module z3c.form.form, line 208, in update
  Module z3c.form.form, line 149, in update
  Module z3c.form.form, line 128, in updateWidgets
  Module zope.component._api, line 103, in getMultiAdapter
ComponentLookupError: ((, , ), , u'')

plone.app.z3cform layers are not in place (configuration ZCML is not read). You probably forgot to include plone.app.z3cform in your product's configuration.zcml. See Installation above.

Inline validation

First, let's set up some infrastructure:

> >>> from zope.interface import alsoProvides >>> from > plone.testing.zope import makeTestRequest >>> from > zope.annotation.interfaces import IAttributeAnnotatable >>> > from z3c.form.interfaces import IFormLayer > > >>> app = layer['app'] >>> def > make_request(form=None, lang='en'): ... request = > makeTestRequest({'HTTP_ACCEPT_LANGUAGE': lang}) ... if form is None: > ... form = {} ... request.form.update(form) ... alsoProvides(request, > IFormLayer) ... alsoProvides(request, IAttributeAnnotatable) ... > return request

Then we create a simple z3c form

> >>> from zope import interface, schema >>> from > z3c.form import form, field, button >>> from > plone.z3cform.layout import FormWrapper > > >>> class MySchema(interface.Interface): ... age = > schema.Int(title=u"Age") > > >>> from __future__ import print_function >>> > class MyForm(form.Form): ... fields = field.Fields(MySchema) ... > ignoreContext = True # don't use context to get widget data ... ... > @button.buttonAndHandler(u'Apply') ... def handleApply(self, action): > ... data, errors = self.extractData() ... print(data['age']) # ... > or do stuff > > >>> class MyFormWrapper(FormWrapper): ... form = MyForm ... > label = u"Please enter your age" > > >>> from zope.component import provideAdapter >>> > from zope.publisher.interfaces.browser import IBrowserRequest > >>> from zope.interface import Interface > > >>> provideAdapter(adapts=(Interface, IBrowserRequest), ... > provides=Interface, ... factory=MyFormWrapper, ... name=u"test-form")

Let's verify that worked:

> >>> from zope.component import getMultiAdapter >>> > from zope.interface import Interface, implementer >>> from > Acquisition import Implicit >>> @implementer(Interface) ... > class Bar(Implicit): ... def restrictedTraverse(self, name): ... # > fake traversal to the form ... if name.startswith('@@'): ... return > getMultiAdapter((self, self._REQUEST), Interface, name[2:]) ... > else: ... return getattr(self, name) ... >>> context = Bar() > >>> request = make_request() >>> context._REQUEST > = request # evil test fake >>> formWrapper = > getMultiAdapter((context, request), name=u"test-form") >>> > formWrapper <Products.Five...MyFormWrapper object ...> > >>> formWrapper.form <class > 'plone.app.z3cform.tests.example.MyForm'> > > >>> del context, request

Inline validation

Inline validation is invoked via the @@z3cform_validate_field view.

> >>> context = Bar() >>> request = > make_request(form={'form.widgets.age': 'Title'}) >>> > context._REQUEST = request >>> form = MyForm(context, > request) >>> z3cform_validate_field = > getMultiAdapter((form, request), name=u"z3cform_validate_field")

This is wired up with jQuery. When the user leaves a form control with inline validation enabled, it will be called with the following parameters:

> >>> z3cform_validate_field(fname=u'form.widgets.age') > '{"errmsg": "The entered value is not a valid integer literal."}' > > >>> request = make_request(form={'form.widgets.age': '20'}) > >>> context._REQUEST = request >>> form = > MyForm(context, request) >>> z3cform_validate_field = > getMultiAdapter((form, request), name=u"z3cform_validate_field") > >>> z3cform_validate_field(fname=u'form.widgets.age') > '{"errmsg": ""}'

If the field name (fname) is not provided by the client, the validation should return without issue:

> >>> z3cform_validate_field() '{"errmsg": ""}' >>> > z3cform_validate_field(fname=None) '{"errmsg": ""}'

Inline validation with groups

We use plone.app.z3cform.tests.example.MyGroupFormWrapper and validate the field 'name' that's part of a group. Inline validation is invoked via the @@z3cform_validate_field view.

> >>> request = make_request(form={'form.widgets.name': ''}) > >>> context._REQUEST = request >>> from > plone.app.z3cform.tests.example import MyGroupFormWrapper >>> > form = MyGroupFormWrapper(context, request) >>> > z3cform_validate_field = getMultiAdapter((form, request), > name=u"z3cform_validate_field")

The validation view takes an Attribute fset with ether the numeric index or the name of the group.

> >>> z3cform_validate_field(fname=u'form.widgets.name', > fset="0") '{"errmsg": "Required input is missing."}' >>> > z3cform_validate_field(fname=u'form.widgets.name', fset="mygroup") > '{"errmsg": "Required input is missing."}' > > >>> request = make_request(form={'form.widgets.name': > u'Name'}) >>> context._REQUEST = request >>> form = > MyGroupFormWrapper(context, request) >>> > z3cform_validate_field = getMultiAdapter((form, request), > name=u"z3cform_validate_field") >>> > z3cform_validate_field(fname=u'form.widgets.name', fset="0") > '{"errmsg": ""}' >>> > z3cform_validate_field(fname=u'form.widgets.name', fset="mygroup") > '{"errmsg": ""}'

Inline-Validation and Translation of ErrorSnippets

We use plone.app.z3cform.tests.example.MyGroupFormWrapper and validate the field 'name' that's part of a group. Inline validation is invoked via the @@z3cform_validate_field view.

> >>> request = make_request(form={'form.widgets.name': ''}, > lang='de',) >>> context._REQUEST = request >>> form > = MyGroupFormWrapper(context, request) >>> > z3cform_validate_field = getMultiAdapter((form, request), > name=u"z3cform_validate_field")

The validation view takes an Attribute fieldset with the index of the group. The error is only shown when warning_only is explicitly switched off (matching the behavior of archetypes.)

> >>> z3cform_validate_field(fname=u'form.widgets.name', > fset="0") '{"errmsg": "Erforderliche Eingabe fehlt."}'

Forms embedded inside normal views

It's possible to embed z3c.form Forms inside a normal BrowserView via viewlets, portlets or tiles.

Currently the name of the form to be validated is gotten from the URL. For embedded forms this can't work since the URL only has the containing view's name.

Until a lasting solution is found, we just make sure that validation doesn't raise an exception if it receives a normal browerview as the supposed form.

> >>> from zope.publisher.browser import BrowserView > >>> class MyNormalView(BrowserView): ... """ """ > > >>> provideAdapter(adapts=(Interface, IBrowserRequest), ... > provides=Interface, ... factory=MyNormalView, ... name=u"my-view")

Let's verify that it gets called...

> >>> context = Bar() >>> request = make_request() > >>> view = getMultiAdapter((context, request), > name=u"my-view") >>> view <MyNormalView object ...>

Inline validation is invoked via the @@z3cform_validate_field view. But in this case no validation output should be returned.

> >>> context = Bar() >>> request = > make_request(form={'form.widgets.age': 'Title'}) >>> > z3cform_validate_field = getMultiAdapter((view, request), > name=u"z3cform_validate_field") >>> > z3cform_validate_field(fname=u'form.widgets.age') '{"errmsg": ""}'

Changelog

4.7.0 (2024-09-24)

New features:

• Implement new ContentBrowserWidget for pat-contentbrowser pattern.

  The deprecated RelatedItemsWidget and pat-relateditems pattern is still available and imports should not break. But the default widget and converter adapter registration for z3c.relationfield is changed to the new widget.

  Since plone.app.relationfield defines the widget with plone.autoform schema hints nothing changes until the package is updated to the new widget. [petschki] (#197)

4.6.1 (2024-05-30)

Internal:

• Date/time widget: Fix data converter adaption. Get the data converter for the date and datetime widgets via adaption and remove the _converter attribute hack. This aligns the code to z3c.form standards and allows to override the data converter which was previously not easily possible. [thet] (#204)

4.6.0 (2024-04-22)

New features:

• Use label_css_class attribute from widget if available in checkbox_input & radio_input [MrTango] (#202)

4.5.0 (2024-03-19)

New features:

• Add support for the "accept" attribute on file inputs.

  If the widget's field - if there is one - has the "accept" attribute set (the NamedImage field has image/* set by default) then this is rendered as an accept attribute on the file input.

  This would restrict the allowed file types before uploading while still being checked on the server side.

  Fixes:

  Depends on:

  - [thet] (#198)

Bug fixes:

• Fix SelectFieldWidget factory call. [petschki] (#192)

4.4.1 (2024-02-27)

Bug fixes:

• Add missing pattern_options multiadapter to new PatternFormElement base class. [petschki] (#190)
• Implement missing PasswordWidget adapter. [petschki] (#193)

4.4.0 (2023-10-18)

New features:

• Add row container to enable column layouts for fields with wrapper_css_class. [petschki] (#158)
• Implement new z3c.form extensible attributes feature and cleanup widget templates using Chameleon interpolation. [petschki] (#181)

Bug fixes:

• Add missing widget configuration for plone.schema.jsonfield.IJSONField. [petschki] (#185)

4.3.0 (2023-07-14)

New features:

• Introduce new Email-Widget which is used for plone.schema.email.IEmail fields. It uses the input type email. [jensens] (#173)

Bug fixes:

• Fix OrdereSelectWidget browser validation when the input is required. [petschki] (#178)
• Ignore form validation when ignoreRequiredOnExtract is set. [petschki] (#179)

Internal:

• Update configuration files. [plone devs] (cfffba8c)

4.2.1 (2023-06-16)

Bug fixes:

• Add required to orderedselect widget. [petschki - original PR by szakitibi] (#170)

4.2.0 (2023-05-22)

New features:

• Move storage utility to plone.namedfile to break a dependency cycle between the two. [gforcada] (#3764)

Bug fixes:

• Remove invalid unicode control characters for TextareaWidget [petschki] (#167)

4.1.0 (2023-04-26)

New features:

• Merge utils and base classes from plone.app.widgets and do not depend on it anymore. [petschki] (#19)

4.0.3 (2023-04-14)

Bug fixes:

• Fixes transitive circular dependency to plone.schema. Inherit own Browserlayer from new intermediate browserlayer in plone.schema. [jensens] (#163)
• Add test extra with the same contents as the tests extra. The tests extra will be removed in Plone 7. [maurits] (#164)

Internal:

• Update configuration files. [plone devs] (3b8337e6)

4.0.2 (2023-03-23)

Bug fixes:

• Fix relative URLs validation in link widget [laulaz] (#160)

Internal:

• Update configuration files. [plone devs] (243ca9ec)

4.0.1 (2023-01-26)

Bug fixes:

• Include required attribute for <textarea> fields. [frapell] (#156)

4.0.0 (2022-11-30)

Bug fixes:

• Final release. [gforcada] (#600)

4.0.0b1 (2022-08-30)

New features:

• Add <span class="title-ref">default_time</span> attribute/argument to Date- and DatetimeWidget to allow the converter to set a custom time when nothing was given. [jensens] (#151)
• Customizable DateWidget formatter length. [petschki] (#154)

Bug fixes:

• Allow non-default fieldset labels to be translated [mtrebron] (#87)
• Fix CSS classname for statusmessage. [petschki] (#149)
• Leftovers of Py 2 removed (with pyupgrade and manual edits). then run black & isort. Do not depend on CMFPlone any longer (circular dependency), but on plone.base. [jensens] (#150)
• Allow DateFieldWidget to be used on schema.datetime. See #151. [jensens] (#151)
• Removed formatting hack for dates before 1900. This was fixed in Python 3.2. [jensens] (#152)

4.0.0a10 (2022-05-24)

Bug fixes:

• Re-enable form validation. [thet] (#147)

4.0.0a9 (2022-04-04)

New features:

• Use browser native date and datetime-local input together with patternslib date-picker [petschki] (#134)
• Use better types for inputs. [thet] (#134)
• Remove inlinevalidation from templates. [thet] (#134)
• Implement TimeWidget which renders <input type="time" /> [petschki] (#134)
• Use pat-validation in forms. [thet] (#134)

Bug fixes:

• time widget supports 'name' and 'value' attributes now. [iham] (#134)
• Register <span class="title-ref">AddView</span> to the correct browserlayer [petschki] (#142)

4.0.0a8 (2022-03-23)

New features:

• Fixed for latest z3c.form [petschki] (#146)

4.0.0a7 (2022-03-09)

Bug fixes:

• Add name attribute to form, if view.form_name is defined. See easyform issue 325. [maurits] (#325)

4.0.0a6 (2022-01-19)

Bug fixes:

• re-enable HTML rendering in form description [petschki] (#138)

4.0.0a5 (2022-01-07)

Bug fixes:

• Remove erroneous extra curly bracket in class name of the widget wrapper. [thet] (#136)

4.0.0a4 (2021-11-26)

New features:

• Enable multiple wysiwyg editors (use default editor registry setting) [duchenean, gotcha] (#45)
• Enable formautofocus for Plone forms. Allow disabling for specific forms with enable_autofocus = False. [jmevissen] (#135)

4.0.0a3 (2021-10-13)

Bug fixes:

• Fix form-error alert for BS5 (including invariants errors). [jensens] (#129)
• Fix widget display mode for Bootstrap 5. [jensens] (#130)

4.0.0a2 (2021-09-01)

New features:

• Add support for more widget options when working with relation fields. (#125)

4.0.0a1 (2021-04-21)

Breaking changes:

• Update form widget implementation for Plone 6 with Bootstrap markup [petschki, balavec, agitator] (#127)

New features:

• • Added Exception for ValueError if value is (None,) and term_value can't be set [wkbkhard] (#121) (#121)

Bug fixes:

• Clean up rst documentation titles, spacing, add .vscode and .idea to gitignore. [balavec] (#0)

3.2.2 (2020-08-21)

Bug fixes:

• Fixed repeat syntax in multi input to also work in Zope 4.5. [maurits] (#116)

3.2.1 (2020-06-30)

Bug fixes:

• Fix message type like Error not translated in add form. This closes <https://github.com/plone/Products.CMFPlone/issues/3126&gt; [vincentfretin] (#115)

3.2.0 (2020-04-20)

New features:

• Add display template for RelatedItemsWidget. No longer only render uuids. [pbauer] (#111)

3.1.3 (2019-10-12)

Bug fixes:

• • Fix LinkWidget selected tab on edit #108 [mamico] (#108)

3.1.2 (2019-08-29)

Bug fixes:

• Fix wrong default for method attribute in pt [mamico] (#107)

3.1.1 (2019-06-27)

Bug fixes:

• • Fixes: Keywords broken plone/Products.CMFPlone#2885 [jensens] (#105)

3.1.0 (2019-05-01)

New features:

• Add display template for AjaxSelectWidget showing the actual vocabularies term title. [jensens]
• IFieldPermissionChecker was moved here from plone.app.widgets. [jensens]

Bug fixes:

• Fixes AjaxSelectWidget to respect tokens different from values in vocabularies. This includes changes in both, the converter and the widget itself. A test was added too. get_ajaxselect_options from plone.app.widgets.utils is assimilated by the widget now too simplify the whole code, so the one in the other package is dead code now and will be deprecated there. [jensens]
• LinkFieldWidget: added converter method toFieldValue [ksuess]

3.0.9 (2019-01-08)

Bug fixes:

• a11y: added role attribute for portalMessage [nzambello]

3.0.8 (2018-11-29)

New features:

• Add support for rendering <optgroup> elements from zope.schema.interfaces.ITreeVocabulary hierarchical terms. [rpatterson]

3.0.7 (2018-11-07)

Bug fixes:

• Fix deprecation warning (<https://github.com/plone/Products.CMFPlone/issues/2605&gt;) [ale-rt]

3.0.6 (2018-09-27)

Bug fixes:

• Prepare for Python 2 / 3 compatibility [pbauer, MatthewWilkes, ale-rt]

3.0.5 (2018-06-19)

Bug fixes:

• Cleanup code analysis problems. [jensens]
• Fix SingleCheckBoxBoolWidget description to render structure [allusa]
• Prepare for Python 2 / 3 compatibility [pbauer, MatthewWilkes, ale-rt]
• Render mimetype selection box correctly for a RichTextWidget which also brings back the TinyMCE. [sallner]
• Allow RelatedItems widget to be used in subforms [tomgross]

3.0.4 (2018-02-04)

Bug fixes:

• Fix test failures from <https://github.com/plone/plone.app.widgets/pull/177&gt; [thet]
• Prepare for Python 2 / 3 compatibility [pbauer]

3.0.3 (2017-11-24)

New features:

• Link widget: add placeholder attributes for external and email link input fields. [thet]

Bug fixes:

• Fix: Add missing i18n-domains to templates. [jensens]
• Use RichTextValue's output_relative_to(self.context) in RichTextWidget so the ITransform doesn't use siteroot. [jaroel]
• Fix in link widget data converter for toWidgetValue to return an empty structure when the field value is empty instead of returning the portal root object. Fixes: <https://github.com/plone/Products.CMFPlone/issues/2163&gt; [thet]
• Keep "internal" links with query strings as external links, otherwise the query string is lost [tomgross]
• Allow an additional CSS class for widgets in this package [tomgross]
• Document customization of widgets [tomgross]

3.0.2 (2017-09-06)

Bug fixes:

• Test fixes for changes in plone.app.widgets querystring options. [thet]

3.0.1 (2017-07-03)

New features:

• Add new and enhanced link widget. [tomgross, thet]

Bug fixes:

• Fix broken get_tinymce_options when called with non-contentish contexts like form or field contexts. [thet]
• Related Items Widget: In search mode, when no basePath was set, search site-wide. Fixes: <https://github.com/plone/mockup/issues/769&gt; [thet]
• Fixes #64: SingleCheckBoxFieldWidget does not render value in view mode. In order to fix this issue the hacky view was removed. It is replaced by a new widget to render a single checkbox with bool values. An appropriate data converter was added as well. [jensens]

3.0 (2017-03-28)

Breaking changes:

• Removed plone.app.z3cform.object and plone.app.z3cform.objectsubform because z3c.form 3.3 removed the underlying code. See <https://github.com/zopefoundation/z3c.form/pull/38&gt; for upstream changes. [maurits]

New features:

• Add new class view-name-VIEWNAME to form element indicating the view name w/o old kss prefix. New class's replaces ++ in view by - in order to produce valid class (CSS selectable) names. [jensens]

Bug fixes:

• Catch TypeError occurring on conflicting subrequests in inline validation [tomgross]
• Clean up: code-style, zca-decorators, replace lambda. [jensens]

2.2.1 (2017-02-12)

New features:

• Do not show the "Clear" button for required Date or DateTime fields. [thet]

Bug fixes:

• Test fixes for plone.app.widgets 2.1. [thet]
• remove deprecated __of__ for browserviews [pbauer]

2.2 (2017-01-02)

Breaking changes:

• Test fixes for plone.app.widgets 2.1. While this is not a breaking change functionality or API wise, the tests do only pass with plone.app.widgets 2.1. [thet]

Bug fixes:

• Fix RelatedItemsDataConverter with relation lists, where in an iteration a wrong value was checked to be existent. Fixes failures in situations, where a None value was part of the relation list. [thet]
• Fix RelatedItemsDataConverter with choice lists, where choices are UUID strings of selected relations, but conversion failed, because Choice field has None as its value_type [datakurre]

2.1.2 (2016-12-02)

Bug fixes:

• Remove ZopeTestCase. [ivanteoh, maurits]
• In select widget, accept items as property or method. This avoids breaking on some z3c.form versions. See <https://github.com/zopefoundation/z3c.form/issues/44&gt; [maurits]

2.1.1 (2016-09-16)

Bug fixes:

• Enable unload protection by using pattern class pat-formunloadalert instead enableUnloadProtection. [thet]

2.1 (2016-08-12)

New features:

• Related items data converter supports explicit value_type specified in field when using collections of UUID values. This is backward-compatible with previous conversion to field values, supports str/unicode value(s), whichever is specified by field. [seanupton]
• Support functions as values in the pattern_options dictionary, which gets then serialized to JSON. Before that, walk recursively through pattern_options and call all functions with the widgets context. This allows for context-specific, runtime evaluated pattern option values. [thet]
• Don't overwrite widget default css classes when rendering pattern widgets. This allows setting a css class via the klass keyword in plone.autoform widget directives. [thet]

2.0.0 (2016-04-29)

Incompatibilities:

• Deprecated "plone.app.z3cform.object" and moved to "plone.app.z3cform.objectsubform" in order to avoid built in names as module names, which may result in difficult to debug errors. [jensens]
• Made existing soft deprecation (by comment) of plone.app.z3cform.layout explicit by deprecating using zope.deferredimport. [jensens]
• removed plone.app.z3cform.queryselect since this was deprecated already and removal planned (!) already for Plone 4.1 [jensens]

New:

• make widget available to wysiwyg_support template [gotcha]

Fixes:

• Reduce dependency on plone.app.widgets in tests. [thet]
• Enhance test in order to show problem in RelatedItemsWidget with navigation-roots [jensens]
• Cleanup: pep8, uth8-headers, zca-decorators, ... [jensens]

1.2.0 (2016-02-25)

New:

• Add metal slot for inserting stuff below fields [fredvd]

Fixes:

• Fix ajax selection for add forms [tomgross]
• Use doctest instead of zope.testing.doctest [pbauer]
• Fix related items widget tests to include root path support. Fix options merging for TinyMCE widget. [alecm]
• Fixed test for plone.app.widgets. [Gagaro]
• Used assertDictEqual instead of assertEqual for RelatedItemsWidgetTests.test_widget [Gagaro]

1.1.8 (2016-01-08)

Fixes:

• Fixed tests for newer CMFPlone. [Gagaro, ebrehault, vangheem]

1.1.7 (2015-11-26)

Fixes:

• Don't allow adding new terms in the AjaxAutocompleteWidget when it's used with a Choice field. [davisagli]
• Remove installation of plone.app.widgets default profile. In Plone 5 with plone.app.widgets >= 2.0, the profile is only a dummy profile for BBB compatibility. [thet]

1.1.6 (2015-10-27)

Fixes:

• Check if user can add keywords for AjaxSelectWidget. [Gagaro]

1.1.5 (2015-09-20)

• Don't check portal_registry for default_charset, we only accept utf-8. [esteele]
• Allow time options to be customized for DatetimeWidget. [thet]
• Wrap context to allow tools to be found in text widget. [cguardia]

1.1.4 (2015-09-16)

• Remove unittest2 dependency. [gforcada]

1.1.3 (2015-07-18)

• Also mock getToolByName for some tests. [vangheem]

1.1.2 (2015-05-11)

• grab selected editor from user [vangheem]

1.1.1 (2015-05-04)

• Use the more specific browser layer IPloneFormLayer for adapter registrations. This avoids double registration errors. [thet]

1.1.0 (2015-03-21)

• Integrate plone.app.widgets. [vangheem]

1.0.2 (unreleased)

• Fix inline-validation warning error [jbirdwell]

1.0.1 (2014-10-23)

• Handle an error where group.__name__ being None caused fieldsets to be given the id 'fieldset-none', which causes issues the inline validation. [esteele]

1.0 (2014-02-26)

• Remove dependency on collective.z3cform.datetimewidget and instead use plone.app.widgets. [garbas, thet]

0.7.6 (2014-01-27)

• Translate fieldset labels correctly. [maurits]
• We can add enable_unload_protection = False on a Form to disable unload protection. [thomasdesvenain]
• Add '.empty' css class to fields that have no value. [cedricmessiant]
• Indicate 'error' status when reporting errors from group forms. [davisagli]
• Replace deprecated test assert statements. [timo]
• Solve #13567: InlineValidation broken for MultiWidget. [sunew]

0.7.5 (2013-10-09)

• Fix an issue with the inline validator, KSS was giving values for fieldset attr than can't be converted to an integer. [jpgimenez]
• Inline validation supports fieldset names instead of integer-indexed naming. [seanupton]
• Use group __name__, not label value to have stable fieldset_name used in DOM id, and for inline validation. [seanupton]
• Inline validation robustness if no field name is passed by client request. [seanupton]
• Support for IDict in the MultiWidget. Makes it compatible with z3c.form 3.0 (released 2013-06-24) [djay]
• Give fieldset legends ids based on their name, for compatibility with Archetypes. [davisagli]
• Fixed checkbox inline validation. [kroman0]

0.7.4 (2013-08-13)

• Display 'required' span only on input mode. [cedricmessiant]

0.7.3 (2013-05-23)

• Added possibility to use z3c.form's ContentProviders [gbastien, jfroche, gotcha]

0.7.2 (2013-03-05)

• Add a macro and slot to the @@ploneform-render-widget templates so it's possible to override the widget rendering without changing the markup surrounding it. [davisagli]
• Restored support for contents without acquisition chain [keul]

0.7.1 (2013-01-01)

• Overrode ObjectSubForm for IObject field in order to provide get_closest_content method. Now it is possible to guess the closest content from a Multiwidget subform. [gborelli]
• Added utils.closest_content from plone.formwidget.contenttree.utils [gborelli]
• Primarily use form name for 'kssattr-formname' form attribute. [vipod]
• Rename the 'fieldset.current' hidden input to 'fieldset' for consistency with Archetypes. [davisagli]

0.7.0 (2012-10-16)

• Support inline validation without depending on KSS. [davisagli]
• Fix a case where the widget broke if its form's content was a dict. [davisagli]

0.6.1 (2012-08-30)

• Fix the single checkbox widget to cope with widgets with a __call__ method. [davisagli]

0.6.0 (2012-05-25)

• Remove hard-coded &#x25a0; (box) markers from required labels to match changes made in sunburst/public.css and archetypes. Fixes double required markers in Plone 4.2rc1.
• Pull form help inside label tag and make it a span rather than a div. The purpose is to improve accessibility by making the semantic connection between label and help. Related to <http://dev.plone.org/ticket/7212&gt;
• Use ViewPageTemplateFile from zope.browserpage. [hannosch]

0.5.8 (2012-05-07)

• Prevent empty error divs from being generated if errors are already associated with a field. [davidjb]

0.5.7 - 2011-11-26

• Corrected formatting for errors on the FieldWidgets object (i.e. from invariants). This closes <http://code.google.com/p/dexterity/issues/detail?id=238&gt; [davisagli]
• Added the i18n:domain attribute in the first div of widget.pt in order to make the "required" tooltip translatable. Fixes <http://dev.plone.org/plone/ticket/12209&gt; [rafaelbco]

0.5.6 - 2011-06-30

• Make sure group errors get styled like field errors. [davisagli]
• Include group and field descriptions as structure. [davisagli]

0.5.5 - 2011-06-26

• Make it possible to add a custom CSS class to a form by setting its css_class attribute. [davisagli]
• Match plone.z3cform's template in including the form description as structure. [davisagli]

0.5.4 - 2011-05-04

• Customize templates for multi and object widgets for more consistent styling. [elro]
• Remove dependency on zope.app.component. [davisagli]
• Add MANIFEST.in. [WouterVH]
• Raise LookupError when terms are not found (e.g. they are no longer visible due to security) [lentinj]

0.5.3 - 2011-01-22

• Fix test setup in Zope 2.10. [davisagli]

0.5.2 - 2011-01-18

• Don't use collective.testcaselayer based IntegrationTestLayer as it leads to PicklingError on Plone 4.1. [elro]
• Change inline validation to match archetypes behavior - add a warning class and omit the error message. [elro]

0.5.1 - 2010-11-02

• Make sure form.extractData() does not raise an AttributeError if the method is called before the form is available (first page load). [timo]
• This package now uses the plone i18n domain. [vincentfretin]
• Added option to override <form action="">. [miohtama]
• Updated README regarding form action and method. [miohtama]

0.5.0 - 2010-04-20

• Render errors from group form widget manager validators. Fixes <http://code.google.com/p/dexterity/issues/detail?id=96&gt; [davisagli]
• Default to showing the default fieldset, rather than the first non-default fieldset. [davisagli]
• Replace the required field indicator image with a unicode box, refs <http://dev.plone.org/plone/ticket/10352&gt; [davisagli, limi]
• Replaced the existing radiobutton-based boolean widget with the standard single checkbox Plone version. [limi]
• Add @@ploneform-render-widget view, so that the widget chrome can be customized for particular widget types. [davisagli]
• Added slots to the titlelessform macro. See README.txt in plone.z3cform for details. [optilude, davisagli]
• Cleaned up templates to match Plone 4 conventions. [optilude]
• Made templates and inline validation work with standalone forms as supported by plone.z3cform 0.6 and later. [optilude]
• Installed a browser layer IPloneFormLayer with this package's extension profile. This inherits from z3c.form's IFormLayer, allowing the default widgets to work. You should always install this package in portal_quickinstaller before using z3c.form forms in Plone. [optilude]
• Made the textlines widget the default for sequence types with text/ascii line value types. The default widget from z3c.form is too confusing. [optilude]
• Use form method defined in form class. This allows HTTP GET forms. Before method was hardcoded to "post" in the template. [miohtama]

0.4.9 - 2010-01-08

• Remove unused (and broken on Plone 4) lookup of the current user's WYSIWYG editor preference. The wysiwyg_support template does this for us. [davisagli]

0.4.8 - 2009-10-23

• Made the KSS validator use publish traversal instead of OFS traversal to find the form. This makes it usable with forms reached by custom IPublishTraverse adapters. [davisagli]
• Added enable_form_tabbing option to not transform fieldsets into tabs. [vincentfretin]
• Added an id to the generated form. [vincentfretin]
• Fixed issue in macros.pt: fieldset.current hidden input was never generated. [vincentfretin]

0.4.7 - 2009-09-25

• Set plone i18n domain for "Info" and "Error" messages in macros.pt so they are translated. [vincentfretin]

0.4.6 - 2009-07-26

• Include plone.z3cform's overrides.zcml from our own overrides.zcml. [optilude]
• Updated to collective.z3cform.datetimewidget>=0.1a2 to fix a ZCML conflict with z3c.form. [davisagli]

0.4.5 - 2009-05-25

• Made the KSS form support conditional on both kss.core and Archetypes being installed. [hannosch]
• Use the date/time widgets from collective.z3cform.datetimewidget as the default widget for Date and Datetime fields. [davisagli]

0.4.4 - 2009-05-03

• Made the KSS validator use traversal instead of getMultiAdapter() to find the form. This makes it work on add forms. See <http://code.google.com/p/dexterity/issues/detail?id=27&gt; [optilude]

0.4.3 - 2009-04-17

• Added a display template for the WYSIWYG widget. [optilude]
• Make the ?fieldset.current query string variable work. Set it to the id of a fieldset other than default to pre-select a different fieldset, e.g. .../@@formview?fieldset.current=3 [optilude]
• Hide the 'default' fieldset if there's nothing to show there. [optilude]
• Provide 'portal' variable in wysiwyg template, as its used by some editors. [davisagli]

0.4.2 - 2008-09-04

• Make the WYSIWYG widget work also for non-Acquisition wrapped content.

0.4.1 - 2008-08-21

• Removed maximum version dependency on zope.component. This should be left to indexes, known good sets or explicit version requirements in buildouts. If you work with zope.component >= 3.5 you will also need five.lsm >= 0.4. [hannosch]
• Make use of new plone.z3cform support for looking up the layout template by adapter. This means that forms now no longer need to depend on plone.app.z3cform unless they want to use Plone-specific widgets.

0.4.0 - 2008-07-31

• Add inline validation support with KSS

• Require zope.component <= 3.4.0 to prevent compatibility issues with five.localsitemanager, of which a buggy version (0.3) is pinned by plone.recipe.plone 3.1.4. Upgrade to this version if you're seeing:

  ...
  Module five.localsitemanager.registry, line 176, in registeredUtilities
  ValueError: too many values to unpack
  

0.3.2 - 2008-07-25

• Fixed a bug in macros.pt where 'has_groups' and 'show_default_label' for fieldsets were set in the 'form' macro, rendering the 'field' macro unusable by itself.

0.3.1 - 2008-07-24

• Fixed a bug where we would use the form macros defined in plone.z3cform instead of our own.

0.3 - 2008-07-24

• Create this package from Plone-specific bits that have been factored out of plone.z3cform.