我正在使用django-taggit,在尝试过滤关系时遇到了问题。
拥有以下型号:
class Artist(models.Model):
tags = TaggableManager()
class Gig(models.Model):
artist = models.ManyToManyField(Artist)
我想要达到的是让所有艺术家都有特定标签的演出。
我认为这很容易并急切地写道:
Gig.objects.filter(artist__tags__name__in=["rock"])
哪位给了我:
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/home/jonas/.virtualenvs/wsw/lib/python2.7/site-packages/django/db/models/manager.py", line 141, in filter
return self.get_query_set().filter(*args, **kwargs)
File "/home/jonas/.virtualenvs/wsw/lib/python2.7/site-packages/django/db/models/query.py", line 550, in filter
return self._filter_or_exclude(False, *args, **kwargs)
File "/home/jonas/.virtualenvs/wsw/lib/python2.7/site-packages/django/db/models/query.py", line 568, in _filter_or_exclude
clone.query.add_q(Q(*args, **kwargs))
File "/home/jonas/.virtualenvs/wsw/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1172, in add_q
can_reuse=used_aliases, force_having=force_having)
File "/home/jonas/.virtualenvs/wsw/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1139, in add_filter
process_extras=False)
File "/home/jonas/.virtualenvs/wsw/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1060, in add_filter
negate=negate, process_extras=process_extras)
File "/home/jonas/.virtualenvs/wsw/lib/python2.7/site-packages/django/db/models/sql/query.py", line 1238, in setup_joins
"Choices are: %s" % (name, ", ".join(names)))
FieldError: Cannot resolve keyword 'tagged_items' into field. Choices are: artist, date, id, location, url
答案 0 :(得分:1)
我设法通过在 manage.py 中评论 TaggableManager.extra_filters()来解决此问题。
带上一粒盐,因为我不知道这可能会因为这个而破坏。
答案 1 :(得分:1)
为所有艺术家制作特定标签的所有演出。
artists = Artist.objects.filter(tags__name__in=["rock"])
gigs = Gig.objects.filter(artist__in=artists)