On Feb 2, 2008 1:44 PM, Derek Richardson <[EMAIL PROTECTED]> wrote:
> I have a schema, let's call it B. It contains an @invariant function. I
> observed that it is not being called during form validation.
>
> After help from Philipp and some investigation, I determined that the
> problem is that schema B isn't itself the main form, but is nested
> within schema A as the value_type of a Tuple field. When schema A is
> validated, schema B's invariant is not checked. I think this may be a
> bug. If someone more knowledgeable will confirm, then I will open a bug
> report.
>
> In the mean time, I need a workaround that verifies that the invariants
> on all instances of schema B in the Tuple on schema A hold during form
> validation. My nascent idea is to put an invariant on schema A that
> checks all the invariants on all schema B instances. However, I am not
> familiar enough with formlib internals to code this up without
> significant research. Can someone help me out with an implementation for
> this workaround or an idea for a different, better workaround?
I have a similar problem using Tuple with Choice. formlib validation
don't check is this field has a value. Is that a bug?
Then I create my own validate method and custom widget that follow:
def validate(self, action, data):
"""Validate form using same as FormBase along with a
customized validation.
"""
return (form.getWidgetsData(self.widgets, self.prefix, data)
+ form.checkInvariants(self.form_fields, data)
+ self.validate_enviar(action, data)
)
def validate_enviar(self, action, data):
"""Validation for field Tuple with value_type=Choice and my
own widget derived from MultiCheckBoxWidget
"""
errors = []
for form_field in self.form_fields:
error = None
field_name = form_field.__name__
widget = self.widgets[field_name]
empty_marker_name = getattr(widget, 'empty_marker_name', None)
if widget.name not in self.request.form and empty_marker_name:
if empty_marker_name not in self.request.form:
error = WidgetInputError(field_name=field_name,
widget_title=form_field.field.title,
errors=('Campo
obrigatório não informado.')
)
if error:
widget.error = error.errors
errors.append(error)
return errors
class MyMultiCheckBoxWidget(MultiCheckBoxWidget):
"""Subclass to customized MultiCheckBoxWidget
"""
orientation = 'horizontal'
def _emptyMarker(self):
"""Disable _empytMarker
"""
return ''
> Thanks,
>
> Derek
>
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> Zope3-users mailing list
> Zope3-users@zope.org
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>
--
Rudá Porto Filgueiras
Weimar Consultoria
http://python-blog.blogspot.com
Hospedagem Plone, Zope e Python?
http://www.pytown.com
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