Django sites framework permissions

Question

I am using the sites framework to run multiple apps off of one code base. I have 3 users, and 3 sites. They can login to the django admin interface and create content but I want them to see only the site they are allowed to manage, not the others, can the sites framework handle this? if not can anyone guide me to the right direction as to how this can be accomplished?

EDIT:

What I did was a simple example. Here goes....

class Weblog(models.Model):
    title = models.CharField(max_length=250)
    slug = models.SlugField(unique=True)
    user = models.ForeignKey(User) # this is the user who should own that blog and see nothing else
    site = models.ForeignKey(Site)

    objects = models.Manager()
    on_site = CurrentSiteManager()

    def __unicode__(self):
        return self.title

class Entry(models.Model):
    title = models.CharField(max_length=200)
    slug = models.SlugField()
    body = models.TextField()
    author = models.ForeignKey(User)
    weblog = models.ForeignKey(Weblog)

This is where I am confused. I understand the concept of a weblog having a reference to a site and a user as well. But then how does one limit that person to only see and add/edit the entries on their own weblog that was created for them?

Thanks