Re: Unique set of fields in a model

On Fri, Apr 30, 2010 at 5:08 PM, cornflake <ilya.kogan@gmail.com> wrote:

Hello,
I'm looking for a way to define uniquness for a set of more than one
field in a model.
For example:

class Item(models.Model):
       order = models.ForeignKey(Order)
       number = models.IntegerField()
       ...

I want the number to be unique per order, and not unique throughout
the table.
How do I define that the combination <order, number> should be unique?

You want the unique together:

http://docs.djangoproject.com/en/dev/ref/models/options/#unique-together

meta option:

http://docs.djangoproject.com/en/dev/topics/db/models/#meta-options

Karen

--
You received this message because you are subscribed to the Google Groups "Django users" group.
To post to this group, send email to django-users@googlegroups.com.
To unsubscribe from this group, send email to django-users+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/django-users?hl=en.