def make_value_from_form(self, value):
"""Convert a form value to a property value.
This turns a key string or object into a model instance.
"""
if value:
if not isinstance(value, db.Model):
value = db.get(value)
return value
def make_value_from_form(self, value):
"""Convert a form value to a property value.
This turns a key string or object into a model instance.
"""
if value:
if not isinstance(value, db.Model):
value = db.get(value)
return value
def clean(self, value):
"""Override Field.clean() to do reference-specific value cleaning.
This turns a non-empty value into a model instance.
"""
value = super(ModelChoiceField, self).clean(value)
if not value:
return None
instance = db.get(value)
if instance is None:
raise db.BadValueError(self.error_messages['invalid_choice'])
return instance
def clean(self, value):
"""Override Field.clean() to do reference-specific value cleaning.
This turns a non-empty value into a model instance.
"""
value = super(ModelChoiceField, self).clean(value)
if not value:
return None
instance = db.get(value)
if instance is None:
raise db.BadValueError(self.error_messages['invalid_choice'])
return instance