On Wednesday 31 May 2006 07:36, favo wrote:
> somebody know how to use instance method in the validator_list of a
> field in model? I can't get the "self".
>
> class Category(models.Model):
> """ Inhert Category """
>
> title_en = models.CharField(maxlength=256, null=True)
>
> parent = models.ForeignKey('self',
> related_name="direct_children", null=True, blank=True,
> validator_list=[self.isValidParent]) # we want the instance method
> here
>
> def isValidParent(self, field_data, all_data):
> if field_data in self.children_ids()
> raise validators.ValidationError("u can't set your
> children as your parent, cause loop")
You can't do this -- validator functions take just field_data and
all_data. In fact, an instance might not even exist when the validator
is called -- when creating a new instance, for example.
However, you can override the 'validate' method on a model, and you
might be able to use that to do what you want (you will probably want a
validate method that looks like this:
class Category(models.Model):
## fields etc here
def validate(self):
error_dict = super(Category, self).validate()
# Do your validation here, adding to 'error_dict'
# and then:
return error_dict
Luke
--
"The truth will set your teeth free." (Calvin and Hobbes)
Luke Plant || L.Plant.98 (at) cantab.net || http://lukeplant.me.uk/
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