i have overwritten clean() methods of models construct constraints meet db schema requirements (because required runtime information validations).
since have finished of back-end side components(models, signals, ..) i'm trying write modelforms models.
what i'm wondering that, there relationship between clean() method of model , clean() implementation on form side?
if , form's clean() calls model's clean() won't have rewrite model - side clean() implementation , able avoid code redundancy.
yes, modelform cleaning involves model cleaning. that's idea modelform: there a lot of useful defaults can determined auto building form object model.
i've discovered clean chaining through personal experience, can reference source.
on 1.8, modelforms call model instance full_clean method. on 1.7, calls clean method directly.
form.full_clean()
def full_clean(self): # ..... snip self._clean_fields() self._clean_form() self._post_clean() modelform._post_clean 1.8
model full_clean() calls clean() amongst other validation: https://docs.djangoproject.com/en/1.8/ref/models/instances/
self.instance.full_clean(exclude=exclude, validate_unique=false) modelform._post_clean 1.7
self.instance.clean() 