Hi Roger, your fix also fixes Object field validation where the schema contains a Choice field with a named vocabulary that depends on the validated object. I opened a ticket for this some time ago (https://bugs.launchpad.net/zope3/+bug/883753). But why does your fix bind Choice fields only before validating and not just any field (as the AbstractCollection field does for its elements if the value_type is specified)? That ist, why not simply replace attribute.validate(getattr(value, name)) by attribute.bind(value).validate(getattr(value, name)) Best regards, Markus Kemmerling why not binding the field before validating in any case (as the Am 12.12.2011 um 00:53 schrieb Roger Ineichen:

Log message for revision 123694: Fix broken Object field validation where the schema contains a Choice with ICountextSourceBinder source. In this case the vocabulary was not iterable because the field was not bound and the source binder didn't return the real vocabulary. Added simple test for IContextSourceBinder validation. But a test with an Object field with a schema using a Choice with IContextSourceBinder is still missing.

Changed: U zope.schema/trunk/CHANGES.txt U zope.schema/trunk/src/zope/schema/_field.py U zope.schema/trunk/src/zope/schema/tests/test_choice.py

-=- Modified: zope.schema/trunk/CHANGES.txt =================================================================== --- zope.schema/trunk/CHANGES.txt 2011-12-11 19:15:25 UTC (rev 123693) +++ zope.schema/trunk/CHANGES.txt 2011-12-11 23:53:56 UTC (rev 123694) @@ -5,7 +5,12 @@ 4.0.2 (unreleased) ------------------

-- None yet. +- Fix broken Object field validation where the schema contains a Choice with + ICountextSourceBinder source. In this case the vocabulary was not iterable + because the field was not bound and the source binder dien't return the + real vocabulary. Added simple test for IContextSourceBinder validation. But a + test with an Object field with a schema using a Choice with + IContextSourceBinder is still missing.

4.0.1 (2011-11-14) ------------------

Modified: zope.schema/trunk/src/zope/schema/_field.py =================================================================== --- zope.schema/trunk/src/zope/schema/_field.py 2011-12-11 19:15:25 UTC (rev 123693) +++ zope.schema/trunk/src/zope/schema/_field.py 2011-12-11 23:53:56 UTC (rev 123694) @@ -492,7 +492,12 @@ if not IMethod.providedBy(schema[name]): try: attribute = schema[name] - if IField.providedBy(attribute): + if IChoice.providedBy(attribute): + # Choice must be bound before validation otherwise + # IContextSourceBinder is not iterable in validation + bound = attribute.bind(value) + bound.validate(getattr(value, name)) + elif IField.providedBy(attribute): # validate attributes that are fields attribute.validate(getattr(value, name)) except ValidationError as error:

Modified: zope.schema/trunk/src/zope/schema/tests/test_choice.py =================================================================== --- zope.schema/trunk/src/zope/schema/tests/test_choice.py 2011-12-11 19:15:25 UTC (rev 123693) +++ zope.schema/trunk/src/zope/schema/tests/test_choice.py 2011-12-11 23:53:56 UTC (rev 123694) @@ -16,11 +16,13 @@ import unittest

from six import u +from zope.interface import implements from zope.schema import vocabulary from zope.schema import Choice from zope.schema.interfaces import ConstraintNotSatisfied from zope.schema.interfaces import ValidationError from zope.schema.interfaces import InvalidValue, NotAContainer, NotUnique +from zope.schema.interfaces import IContextSourceBinder

from zope.schema.tests.test_vocabulary import SampleVocabulary, DummyRegistry

@@ -112,10 +114,37 @@ self.assertRaises(ValueError, choice.validate, "value")

+class SampleContextSourceBinder(object): + implements(IContextSourceBinder) + def __call__(self, context): + return SampleVocabulary() + +class ContextSourceBinder_ChoiceFieldTests(unittest.TestCase): + """Tests of the Choice Field using IContextSourceBinder as source.""" + + def setUp(self): + vocabulary._clear() + + def tearDown(self): + vocabulary._clear() + + def test_validate_source(self): + s = SampleContextSourceBinder() + choice = Choice(source=s) + # raises not iterable with unbound field + self.assertRaises(TypeError, choice.validate, 1) + o = object() + clone = choice.bind(o) + clone.validate(1) + clone.validate(3) + self.assertRaises(ConstraintNotSatisfied, clone.validate, 42) + + def test_suite(): suite = unittest.TestSuite() suite.addTest(unittest.makeSuite(Vocabulary_ChoiceFieldTests)) suite.addTest(unittest.makeSuite(Value_ChoiceFieldTests)) + suite.addTest(unittest.makeSuite(ContextSourceBinder_ChoiceFieldTests)) return suite

if __name__ == "__main__":

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