Get a queryset of objects through an intermediary model
I want get all of the Geom objects that are related to a certain content\_object (see the function I'm trying to build at the bottom, get\_geoms\_for\_obj()

    class Geom(models.Model):
        ...

    class GeomRelation(models.Model):
        ''' For tagging many objects to a Geom object and vice-versa'''

        geom = models.ForeignKey(Geom)
        content_type = models.ForeignKey(ContentType)
        object_id = models.PositiveIntegerField()
        content_object = generic.GenericForeignKey()

    def get_geoms_for_object(obj):
        ''' takes an object and gets the geoms that are related

        '''
        ct = ContentType.objects.get_for_model(obj)
        id = obj.id
        grs = GeomRelation.objects.filter( content_type=ct, object_id=id )
        # how with django orm magic can I build the queryset instead of list
        # like below to get all of the Geom objects for a given content_object
        geoms = []
        for gr in grs:
            geoms.append(gr.geom)
        return set(geoms)
        # A set makes it so that I have no redundant entries but I want the
        # queryset ordering too .. need to make it a queryset for so many reasons...


Get a queryset of objects through an intermediary model
===

I want get all of the Geom objects that are related to a certain content\_object (see the function I'm trying to build at the bottom, get\_geoms\_for\_obj()

    class Geom(models.Model):
        ...

    class GeomRelation(models.Model):
        ''' For tagging many objects to a Geom object and vice-versa'''

        geom = models.ForeignKey(Geom)
        content_type = models.ForeignKey(ContentType)
        object_id = models.PositiveIntegerField()
        content_object = generic.GenericForeignKey()

    def get_geoms_for_object(obj):
        ''' takes an object and gets the geoms that are related

        '''
        ct = ContentType.objects.get_for_model(obj)
        id = obj.id
        grs = GeomRelation.objects.filter( content_type=ct, object_id=id )
        # how with django orm magic can I build the queryset instead of list
        # like below to get all of the Geom objects for a given content_object
        geoms = []
        for gr in grs:
            geoms.append(gr.geom)
        return set(geoms)
        # A set makes it so that I have no redundant entries but I want the
        # queryset ordering too .. need to make it a queryset for so many reasons...

