def __init__(self, queryset, empty_label="---------", cache_choices=False,
required=True, widget=None, label=None, initial=None,
help_text=None, to_field_name=None, *args, **kwargs):
if required and (initial is not None):
self.empty_label = None
else:
self.empty_label = empty_label
self.cache_choices = cache_choices
# Call Field instead of ChoiceField __init__() because we don't need
# ChoiceField.__init__().
Field.__init__(self, required, widget, label, initial, help_text,
*args, **kwargs)
self.queryset = queryset
self.choice_cache = None
self.to_field_name = to_field_name
def validate(self, value):
return Field.validate(self, value)