QuerySet method count() on models with a manytomanyfield not working in the latest trunk

[shilin]

I have a model like this:

class Thread(models.Model):    
    
    group = models.ForeignKey(Group)
    creator = models.ForeignKey(Profile)
    categories = models.ManyToManyField('object.Category')

you can see that it has a manytomanyfield to the model Category in the application named object
due to the way that I'm not directly importing the model Category but use a string instead,
the following query will return a error

Thread.objects.filter(categories__in = category_list).count()

no such column: group_thread_categories.object.category_id

as in the database level, the ORM generates a query like this

'SELECT COUNT(*) FROM "group_thread" INNER JOIN "group_thread_categories" WHERE ("group_thread_categories"."object.category_id" IN (?))'

this bug doesn't appear in revision 9800 because i just checked out svn today and my code starts to break.

[Russell Keith-Magee]

It appears that this problem has been fixed - it was probably a result of the m2m refactor.