Question

I have a join table:

class ReviewTag(models.Model):

    review = models.ForeignKey(Review)
    tag = models.ForeignKey(Tag)

I do the following to get a list of ReviewTag objects:

review.reviewtag_set.all()

If Tag has an attribute called ‘name’. How do i create a list of names from the list of objects?

Answer 1

[reviewtag.tag.name for reviewtag in review.reviewtag_set.all().select_related()]

or

[tag.name for tag in Tag.objects.filter(reviewtag__review=review)]

or

Tag.objects.filter(reviewtag__review=review).values_list('name', flat=True)

---

The development version of django has support for values across JOINs
http://docs.djangoproject.com/en/dev/ref/models/querysets/#values

Which would let you do

review.reviewtag_set.all().values('tag__name')

Good stuff.