gistfile1.py

class SeoSiteFacet(models.Model):
    """This model defines the default Custom Facet(s) for a given site."""
    seosite = models.ForeignKey('SeoSite')
    customfacet = models.ForeignKey('CustomFacet')
    is_default = models.BooleanField('Make this CustomFacet default',
                                     default=False)

    class Meta:
        # This is a ridiculous hack so we can display facets using the select
        # box instead of the dropdowns.
        auto_created = True