using forms.DateField or forms.DateTimeField causes validation error on fields that should be optional

[Skylar Saveland <skylar.saveland@…>]

If you have a model like:

class Event(models.Model):

...
end = models.DateTimeField(blank=True, null=True)
...

and a modelform like:

from django import forms
from events.models import Event

class EventForm(forms.ModelForm):

end = forms.DateTimeField(('%m/%d/%Y %H:%M',),

widget=forms.SplitDateTimeWidget(

date_format='%m/%d/%Y',
time_format='%H:%M',

),
required=False

)

class Meta:

model = Event

submitting an empty field will cause a validation error.