python - 在 /catalog/borrowed/ 配置不当

Question

我是 python-django 编码的初学者。目前我正在尝试完成https://developer.mozilla.org/en-US/docs/Learn/Server-side/Django/Authentication上的挑战，但我面临

LoanedBooksByAllUserListView 缺少 permission_required 属性。定义 LoanedBooksByAllUserListView.permission_required，或覆盖 LoanedBooksByAllUserListView.get_permission_required()。

在 urls.py

from django.urls import path
from . import views

urlpatterns = [
    path('', views.index, name='index'),
    path('books/', views.BookListView.as_view(), name='books'),
    path('book/<int:pk>', views.BookDetailView.as_view(), name='book-detail'),
    path('authors/', views.AuthorListView.as_view(), name='authors'),
    path('author/<int:pk>', views.AuthorDetailView.as_view(), name='author-detail'),
    path('mybooks/', views.LoanedBooksByUserListView.as_view(), name='my-borrowed'),
    path('borrowed/', views.LoanedBooksByAllUserListView.as_view(), name='all-borrowed'),
]

在views.py

from django.shortcuts import render

# Create your views here.
from .models import Book, Author, BookInstance, Genre

def index(request):
    """View function for home page of site."""

    # Generate counts of some of the main objects
    num_books = Book.objects.all().count()
    num_instances = BookInstance.objects.all().count()

    # Available books (status = 'a')
    num_instances_available = BookInstance.objects.filter(status__exact='a').count()

    # The 'all()' is implied by default.
    num_authors = Author.objects.count()

    # Number of visits to this view, as counted in the session variable.
    num_visits = request.session.get('num_visits', 0)
    request.session['num_visits'] = num_visits + 1

    context = {
        'num_books': num_books,
        'num_instances': num_instances,
        'num_instances_available': num_instances_available,
        'num_authors': num_authors,
        'num_visits': num_visits,
    }

    # Render the HTML template index.html with the data in the context variable.
    return render(request, 'index.html', context=context)
from django.views import generic

class BookListView(generic.ListView):
    model = Book
    paginate_by = 5

class BookDetailView(generic.DetailView):
    model = Book

class AuthorListView(generic.ListView):
    model = Author
    paginate_by = 5

class AuthorDetailView(generic.DetailView):
    model = Author

from django.contrib.auth.mixins import LoginRequiredMixin

class LoanedBooksByUserListView(LoginRequiredMixin,generic.ListView):
    """Generic class-based view listing books on loan to current user."""
    model = BookInstance
    template_name ='catalog/bookinstance_list_borrowed_user.html'
    paginate_by = 10

    def get_queryset(self):
        return BookInstance.objects.filter(borrower=self.request.user).filter(status__exact='o').order_by('due_back')

from django.contrib.auth.mixins import PermissionRequiredMixin

class LoanedBooksByAllUserListView(PermissionRequiredMixin,generic.ListView):
    model = BookInstance
    template_name ='catalog/allbookinstancelistborrowed.html'
    paginate_by = 10
   
    def get_queryset(self):
        return BookInstance.objects.filter(status__exact='o').order_by('due_back')

标签： pythondjango