Django unique_together error and validation

Question

class Votes(models.Model):  
    field1 = models.ForeignKey(Blah1)  
    field2 = models.ForeignKey(Blah2)  
    class Meta:  
            unique_together = (("field1","field2"),)

I am using this code as one of my models. Now i wanted to know two things:
1. It doesn't show any error and it saved an entry which wasn't unique together; So is the piece of code correct?
2. How can the unique_together constraint be be validated?

Answer 1

Looks ok to me. Have you tried the simpler syntax of unique_together = ("field1","field2") just in case there's a subtle bug?

Either way, as said here "It's used in the Django admin and is enforced at the database level (i.e., the appropriate UNIQUE statements are included in the CREATE TABLE statement)."

Did you update your schema (with a migration, a drop and fresh syncdb or manual SQL) to add the appropriate constraints?