内容：已解决！ views.py——def show(request,sid):里的——show.category.id 改成 show.category_id 可能是django版本问题吧？
内容：Traceback (most recent call last): File "E:\bishe\myblog\myblogvenv\lib\site-packages\django\core\handlers\exception.py", line 34, in inner response = get_response(request) File "E:\bishe\myblog\myblogvenv\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response response = self.process_exception_by_middleware(e, request) File "E:\bishe\myblog\myblogvenv\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "E:\bishe\myblog\blog\views.py", line 62, in show previous_blog = Article.objects.filter(created_time__gt=show.created_time,category=show.category.id).first() Exception Type: AttributeError at /show-1.html Exception Value: 'NoneType' object has no attribute 'id' 请问老师傅这个问题怎么解决？ Django Version: 3.0.3
内容：已解决！ views.py——def show(request,sid):里的——show.category.id 改成 show.category_id 可能是django版本问题吧？
内容：Traceback (most recent call last): File "E:\bishe\myblog\myblogvenv\lib\site-packages\django\core\handlers\exception.py", line 34, in inner response = get_response(request) File "E:\bishe\myblog\myblogvenv\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response response = self.process_exception_by_middleware(e, request) File "E:\bishe\myblog\myblogvenv\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "E:\bishe\myblog\blog\views.py", line 62, in show previous_blog = Article.objects.filter(created_time__gt=show.created_time,category=show.category.id).first() Exception Type: AttributeError at /show-1.html Exception Value: 'NoneType' object has no attribute 'id' 请问老师傅这个问题怎么解决？ Django Version: 3.0.3