id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
3172	Model.validate raises TypeError on NULL for DateField, DateTimeField, and TimeField	RahmCoff@…	Adrian Holovaty	"When you have a model with any of the date/time fields, it throws a TypeError. For example:
{{{
class TestModel(models.Model):
    test_date = models.DateField()
    test_date_time = models.DateTimeField()
    test_time = models.TimeField()

TestModel().validate()

Traceback (most recent call last):
  File ""<console>"", line 1, in ?
  File ""django/db/models/base.py"", line 230, in validate
    setattr(self, f.attname, f.to_python(getattr(self, f.attname, f.get_default())))
  File ""django/db/models/fields/__init__.py"", line 435, in to_python
    validators.isValidANSIDate(value, None)
  File ""django/core/validators.py"", line 146, in isValidANSIDate
    if not ansi_date_re.search(field_data):
TypeError: expected string or buffer
}}}
Similar errors appear with DateTime and Time."	defect	closed	Database layer (models, ORM)	dev	normal	fixed		sam@… floguy@…	Ready for checkin	1	0	0	0	0	0