NoReverseMatch位于//，反向表示“找不到”不是有效的视图函数或模式名称

class LoanedBooksAllListView(PermissionRequiredMixin, generic.ListView): """Generic class-based view listing all books on loan. Only visible to users with can_mark_returned permission.""" model = BookInstance permission_required = 'catalog.can_mark_returned' template_name = 'catalog/bookinstance_list_borrowed_all.html' paginate_by = 10 def get_queryset(self): return BookInstance.objects.filter(status__exact='o').order_by('due_back')

Environment: Request Method: GET Request URL: http://127.0.0.1:8000/catalog/borrowed/ Django Version: 2.1.3 Python Version: 3.7.0 Installed Applications: ['django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'catalog.apps.CatalogConfig'] Installed Middleware: ['django.middleware.security.SecurityMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware'] Template error: In template E:\MDN\django_projects\localibrary\catalog\templates\base_generic.html, error at line 8 Reverse for 'renew-book-librarian' not found. 'renew-book-librarian' is not a valid view function or pattern name. 1 : <!DOCTYPE html> 2 : <html lang="en"> 3 : <head> 4 : {% block title %}<title>Local Library</title>{% endblock %} 5 : <meta charset="utf-8"> 6 : <meta name="viewport" content="width=device-width, initial-scale=1"> 7 : <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous"> 8 : <link rel="stylesheet" href="https://use.fontawesome.c om/releases/v5.5.0/css/all.css" integrity="s ha384-B4dIYHKNBt8Bc12p+WXckhzcICo0wtJAoU8YZTY5qE0Id1GSseTk6S+L3BlXeVIU" crossorigin="anonymous"> 9 : <link href="https://fonts.googleapis.com/css?family=Pridi:400,500,600" rel="stylesheet"> 10 : <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script> 11 : <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script> 12 : <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script> 13 :  14 : {% load static %} 15 : <link rel="stylesheet" type="text/css" href="{% static '../static/css/styles.css' %}"> 16 : </head> 17 : <body> 18 : <section class="top"> Traceback: File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\core\handlers\exception.py" in inner 34. response = get_response(request) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\core\handlers\base.py" in _get_response 156. response = self.process_exception_by_middleware(e, request) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\core\handlers\base.py" in _get_response 154. response = response.render() File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\response.py" in render 106. self.content = self.rendered_content File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\response.py" in rendered_content 83. content = template.render(context, self._request) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\backends\django.py" in render 61. return self.template.render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in render 171. return self._render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in _render 163. return self.nodelist.render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in render 937. bit = node.render_annotated(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in render_annotated 904. return self.render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\loader_tags.py" in render 150. return compiled_parent._render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in _render 163. return self.nodelist.render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in render 937. bit = node.render_annotated(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in render_annotated 904. return self.render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\loader_tags.py" in render 62. result = block.nodelist.render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in render 937. bit = node.render_annotated(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in render_annotated 904. return self.render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\defaulttags.py" in render 309. return nodelist.render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in render 937. bit = node.render_annotated(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in render_annotated 904. return self.render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\defaulttags.py" in render 209. nodelist.append(node.render_annotated(context)) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in render_annotated 904. return self.render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\defaulttags.py" in render 309. return nodelist.render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in render 937. bit = node.render_annotated(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\base.py" in render_annotated 904. return self.render(context) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\template\defaulttags.py" in render 442. url = reverse(view_name, args=args, kwargs=kwargs, current_app=current_app) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\urls\base.py" in reverse 90. return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)) File "C:\Users\JOACHI~1\Envs\joka\lib\site-packages\django\urls\resolvers.py" in _reverse_with_prefix 622. raise NoReverseMatch(msg) Exception Type: NoReverseMatch at /catalog/borrowed/ Exception Value: Reverse for 'renew-book-librarian' not found. 'renew-book-librarian' is not a valid view function or pattern name.

<h1>All Borrowed Books</h1> {% if bookinstance_list %} <ul> {% for bookinst in bookinstance_list %} <li class="{% if bookinst.is_overdue %}text-danger{% endif %}"> <a href="{% url 'book-detail' bookinst.book.pk %}">{{bookinst.book.title}}</a> ({{ bookinst.due_back }}) {% if user.is_staff %}- {{ bookinst.borrower }}{% endif %} {% if perms.catalog.can_mark_returned %}- <a href="{% url 'renew-book-librarian' bookinst.id %}">Renew</a> {% endif %} </li> {% endfor %} </ul> {% else %} <p>There are no books borrowed.</p> {% endif %}

1条回答

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1楼 · 发布于 2024-04-20 05:44:33

<a href="{% url 'renew-book-librarian' bookinst.id %}Renew</a> "

这就是问题所在。你的背面没有“续借图书管理员”的字样。在

为了解决该问题，您需要添加具有以下相反名称的视图：

urlpatterns += [
    path('mybooks/', views.LoanedBooksByUserListView.as_view(), name='my-borrowed'),
    path(r'borrowed/', views.LoanedBooksAllListView.as_view(), name='all-borrowed'),
    # add this one
    path(r'borrowed/<int:bookinst_id>', views.LoanedBooksDetailView.as_view(), name='renew-book-librarian'),
]

并添加LoanedBooksDetailView视图。在

或者将url更改为另一个视图或#，而您没有正确的url，但希望用空url实现，如：

^{pr2}$

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