Wrong lookup in the aggregation examples

[yliharma]

The example lookup in ​https://docs.djangoproject.com/en/1.3/topics/db/aggregation/#order-of-annotate-and-filter-clauses
is wrong:

>>> Publisher.objects.annotate(num_books=Count('book')).filter(book__rating__gt=3.0)
and the query:

>>> Publisher.objects.filter(book__rating__gt=3.0).annotate(num_books=Count('book'))

because the model Publisher doesn't contain any ForeignKey to the model Book (while the reverse is True).
It should be:

>>> Publisher.objects.annotate(num_books=Count('book')).filter(book_set__rating__gt=3.0)
and the query:

>>> Publisher.objects.filter(book_set__rating__gt=3.0).annotate(num_books=Count('book'))

[Ramiro Morales]

No, the parts separated by '__' of a lookup that spans relationships use the lowercase model names, not the <model>_set notation. See ​https://docs.djangoproject.com/en/1.3/topics/db/queries/#lookups-that-span-relationships