djangoforms.py 文件源码

def get_form_field(self, **kwargs):
    """Return a Django form field appropriate for a time property.

    This defaults to a TimeField instance, except if auto_now or
    auto_now_add is set, in which case None is returned, as such
    'auto' fields should not be rendered as part of the form.
    """
    if self.auto_now or self.auto_now_add:
      return None
    defaults = {'form_class': forms.TimeField}
    defaults.update(kwargs)
    return super(TimeProperty, self).get_form_field(**defaults)