QuerySet不允许Django CBVListViewpaginate_by

如何解决QuerySet不允许Django CBVListViewpaginate_by

我正在尝试分页我的任务，但是我不能

views.py：

class DashboardTaskAppView(LoginrequiredMixin,ListView):
    model = Task
    template_name = "task_app/task_dashboard.html"
    context_object_name = 'tasks'
    today = datetime.date.today()
    paginate_by = 5
    
    def queryset(self):
        ordering = ['-due_date']
        usr = self.request.user
        return Task.objects.filter(Q(responsable=usr))

无 paginate_by = 5：

与 paginate_by = 5：

TypeError at /task/
object of type 'method' has no len()
Request Method: GET
Request URL:    http://localhost:8000/task/
Django Version: 3.1.2
Exception Type: TypeError
Exception Value:    
object of type 'method' has no len()
Exception Location: C:\Users\caior\Desktop\Python\simple_task\venv\lib\site-packages\django\core\paginator.py,line 95,in count
Python Executable:  C:\Users\caior\Desktop\Python\simple_task\venv\Scripts\python.exe
Python Version: 3.8.5
Python Path:    
['C:\\*\\*\\*\\Python\\simple_task','C:\\*\\*\\*\\Python\\simple_task\\venv\\Scripts\\python38.zip','c:\\*\\*\\*\\local\\programs\\python\\python38-32\\DLLs','c:\\*\\*\\*\\local\\programs\\python\\python38-32\\lib','c:\\*\\*\\*\\local\\programs\\python\\python38-32','C:\\*\\*\\*\\Python\\simple_task\\venv','C:\\*\\*\\*\\Python\\simple_task\\venv\\lib\\site-packages']
Server time:    Mon,09 Nov 2020 09:48:07 +0100

控制台：

  File "C:\*\*\*\Python\simple_task\venv\lib\site-packages\django\core\paginator.py",in count
    return len(self.object_list)
TypeError: object of type 'method' has no len()
[09/Nov/2020 09:48:07] "GET /task/ HTTP/1.1" 500 112987

我们非常感谢您的帮助，在此先感谢您， 问候

解决方法

您正在使用方法覆盖View的queryset属性。相反，您应该覆盖get_queryset方法：

class DashboardTaskAppView(LoginRequiredMixin,ListView):
    # rest of the code

    def get_queryset(self):
        ordering = ['-due_date']
        usr = self.request.user
        return Task.objects.filter(Q(responsable=usr))