On Apr 4, 2:06 pm, Chris <chriss...@gmail.com> wrote: > How would you enforce a unique column constraint on a combination of > fields? > > For example, say I have the model: > > class Company(models.Model): > name = models.CharField(unique=True) > > class Article(models.Model): > company = models.ForeignKey(Company) > title = models.CharField(max_length=500) > > In the Article model, I'd want to make the combination of company > +title unique. In other words, one Company could be associated with > many Articles, and one Article title could be associated with many > Comanies, but no one company should be associated with the same > Article title more than once. Is that possible?
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