Django - How to specify which field a validation fails on?

Question

I have this model I\'m showing in the admin page:

class Dog(models.Model):
    bark_volume = models.DecimalField(...
    unladen_speed = models.DecimalField(...
         


        

Answer 1

abbreviated, from the django docs:

def clean(self):
    data = self.cleaned_data
    subject = data.get("subject")

    if subject and "help" not in subject:
        msg = "Must put 'help' in subject."
        self.add_error('subject', msg)

    return data