在Django中使用基于类的视图时，DetailView内部出现了问题。
我想要获得的是特定类型的所有电影的列表，即：Movie.objects.all().filter(genre=genre_id)。
class GenreView(generic.DetailView):
model = Genre
template_name = 'movies/genre.html'
context_object_name = 'this_genre'
def get_context_data(self, **kwargs):
context = super(GenreView, self).get_context_data(**kwargs)
context.update({
'all_movies': Movie.objects.all().filter(genre=pk),
'all_genres': Genre.objects.all()
})
return context
我收到此错误：
Traceback (most recent call last):
File "C:\Program Files (x86)\Python35-32\lib\site-packages\django\core\handler
s\base.py", line 149, in get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Program Files (x86)\Python35-32\lib\site-packages\django\core\handler
s\base.py", line 147, in get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Program Files (x86)\Python35-32\lib\site-packages\django\views\generi
c\base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "C:\Program Files (x86)\Python35-32\lib\site-packages\django\views\generi
c\base.py", line 88, in dispatch
return handler(request, *args, **kwargs)
File "C:\Program Files (x86)\Python35-32\lib\site-packages\django\views\generi
c\detail.py", line 118, in get
context = self.get_context_data(object=self.object)
File "C:\Users\admin\trailers\movies\views.py", line 43, in get_context_data
'all_movies': Movie.objects.all().filter(genre=pk),
NameError: name 'pk' is not defined
当我尝试替换Movie.objects.all().filter(genre=pk)为Movie.objects.all().filter(genre=kwargs['pk'])：
Traceback (most recent call last):
File "C:\Program Files (x86)\Python35-32\lib\site-packages\django\core\handler
s\base.py", line 149, in get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Program Files (x86)\Python35-32\lib\site-packages\django\core\handler
s\base.py", line 147, in get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Program Files (x86)\Python35-32\lib\site-packages\django\views\generi
c\base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "C:\Program Files (x86)\Python35-32\lib\site-packages\django\views\generi
c\base.py", line 88, in dispatch
return handler(request, *args, **kwargs)
File "C:\Program Files (x86)\Python35-32\lib\site-packages\django\views\generi
c\detail.py", line 118, in get
context = self.get_context_data(object=self.object)
File "C:\Users\admin\trailers\movies\views.py", line 43, in get_context_data
'all_movies': Movie.objects.all().filter(genre=kwargs['pk']),
KeyError: 'pk'
我似乎无法找出问题所在，不胜感激！
kwargs传递给的参数get_context_data不包含对象的主键值。您可以从中获取self.kwargs：
Movie.objects.all().filter(genre=self.kwargs['pk'])
此外，当您在内部时，您将看到存在self.object （可以Genre读取的实例）并且可以访问get_context_data，因此您也可以使用它来执行以下操作：
Movie.objects.all().filter(genre=self.object)
本文收集自互联网，转载请注明来源。
如有侵权，请联系 [email protected] 删除。
我来说两句