Python-сообщество

class topping(models.Model):
    title = models.CharField(max_length=50)
    def __unicode__(self):
        return self.title
    class Meta:
        db_table = 'test_topping'
class pizza(models.Model):
    title = models.CharField(max_length=50)
    toppings = models.ManyToManyField(topping, through='links')
    def __unicode__(self):
        return self.title
    class Meta:
        db_table = 'test_pizza'
class links(models.Model):
    topping = models.ForeignKey(topping)
    pizza = models.ForeignKey(pizza)
    date_joined = models.DateTimeField()
    invite_reason = models.CharField(max_length=64)
    class Meta:
        db_table = 'test_links'

def test(request):
    pizzas = models.pizza.objects.all().values('title','id','toppings__title')
    return render_to_response( 'test.html', locals(), RequestContext(request) )

{% for pizza in pizzas %}
    {{ pizza.title }}
    {% for item in pizza.toppings.all %}
        {{ item.toppings__title }}
    {% endfor %}
{% endfor %}

models.pizza.objects.prefetch_related('toppings').all()