为什么我在这个Django应用程序中获得“NoReverseMatch at/catalog/followed/”错误？

import uuid # Required for unique book instances from datetime import date from django.contrib.auth.models import User # Required to assign User as a borrower class BookInstance(models.Model): """Model representing a specific copy of a book (i.e. that can be borrowed from the library).""" id = models.UUIDField(primary_key=True, default=uuid.uuid4, help_text="Unique ID for this particular book across whole library") book = models.ForeignKey('Book', on_delete=models.SET_NULL, null=True) imprint = models.CharField(max_length=200) due_back = models.DateField(null=True, blank=True) borrower = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, blank=True) @property def is_overdue(self): if self.due_back and date.today() > self.due_back: return True return False LOAN_STATUS = ( ('d', 'Maintenance'), ('o', 'On loan'), ('a', 'Available'), ('r', 'Reserved'), ) status = models.CharField( max_length=1, choices=LOAN_STATUS, blank=True, default='d', help_text='Book availability') class Meta: ordering = ['due_back'] permissions = (("can_mark_returned", "Set book as returned"),) def __str__(self): """String for representing the Model object.""" return '{0} ({1})'.format(self.id, self.book.title)

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')

{% extends "base_generic.html" %} {% block content %} <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 %} {% endblock %}

urlpatterns += [ path('mybooks/', views.LoanedBooksByUserListView.as_view(), name='my-borrowed'), path(r'borrowed/', views.LoanedBooksAllListView.as_view(), name='all-borrowed'), # Added for challenge ]

NoReverseMatch at /catalog/borrowed/ Reverse for 'renew-book-librarian' not found. 'renew-book-librarian' is not a valid view function or pattern name. Request Method: GET Request URL: http://localhost:8000/catalog/borrowed/ Django Version: 3.1.4 Exception Type: NoReverseMatch Exception Value: Reverse for 'renew-book-librarian' not found. 'renew-book-librarian' is not a valid view function or pattern name. Exception Location: /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/urls/resolvers.py, line 685, in _reverse_with_prefix Python Executable: /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/bin/python3 Python Version: 3.8.5 Python Path: ['/home/andrea/Documenti/Python-WS/django_projects/locallibrary', '/usr/lib/python38.zip', '/usr/lib/python3.8', '/usr/lib/python3.8/lib-dynload', '/home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages'] Server time: Thu, 31 Dec 2020 11:08:18 +0100 Error during template rendering In template /home/andrea/Documenti/Python-WS/django_projects/locallibrary/catalog/templates/base_generic.html, error at line 0 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  9 {% load static %} 10 <link rel="stylesheet" href="{% static 'css/styles.css' %}"> Traceback Switch to copy-and-paste view /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/core/handlers/exception.py, line 47, in inner response = get_response(request) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/core/handlers/base.py, line 202, in _get_response response = response.render() … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/response.py, line 105, in render self.content = self.rendered_content … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/response.py, line 83, in rendered_content return template.render(context, self._request) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/backends/django.py, line 61, in render return self.template.render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 170, in render return self._render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 162, in _render return self.nodelist.render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 938, in render bit = node.render_annotated(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 905, in render_annotated return self.render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/loader_tags.py, line 150, in render return compiled_parent._render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 162, in _render return self.nodelist.render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 938, in render bit = node.render_annotated(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 905, in render_annotated return self.render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/loader_tags.py, line 62, in render result = block.nodelist.render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 938, in render bit = node.render_annotated(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 905, in render_annotated return self.render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/defaulttags.py, line 312, in render return nodelist.render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 938, in render bit = node.render_annotated(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 905, in render_annotated return self.render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/defaulttags.py, line 211, in render nodelist.append(node.render_annotated(context)) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 905, in render_annotated return self.render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/defaulttags.py, line 312, in render return nodelist.render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 938, in render bit = node.render_annotated(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/base.py, line 905, in render_annotated return self.render(context) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/template/defaulttags.py, line 446, in render url = reverse(view_name, args=args, kwargs=kwargs, current_app=current_app) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/urls/base.py, line 87, in reverse return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)) … ▶ Local vars /home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/lib/python3.8/site-packages/django/urls/resolvers.py, line 685, in _reverse_with_prefix raise NoReverseMatch(msg) … ▶ Local vars Request information USER utente2 GET No GET data POST No POST data FILES No FILES data COOKIES Variable Value csrftoken 'iD3hPtfJJBZVhspWJCd6lBixHZlQXDGTNNcNxOeXHP8sMPojFWdj44KmuWLhofBt' sessionid 'be6093iztc4amp01m5iem5rqs1hpvmfu' META Variable Value COLORTERM 'truecolor' CONTENT_LENGTH '' CONTENT_TYPE 'text/plain' CSRF_COOKIE 'iD3hPtfJJBZVhspWJCd6lBixHZlQXDGTNNcNxOeXHP8sMPojFWdj44KmuWLhofBt' DBUS_SESSION_BUS_ADDRESS 'unix:path=/run/user/1000/bus,guid=447d4c8bbf6ab158891dbc085fed8d55' DBUS_STARTER_ADDRESS 'unix:path=/run/user/1000/bus,guid=447d4c8bbf6ab158891dbc085fed8d55' DBUS_STARTER_BUS_TYPE 'session' DERBY_HOME '/usr/lib/jvm/java-15-oracle/db' DESKTOP_SESSION 'ubuntu' DISPLAY ':0' DJANGO_SETTINGS_MODULE 'locallibrary.settings' GATEWAY_INTERFACE 'CGI/1.1' GDMSESSION 'ubuntu' GNOME_DESKTOP_SESSION_ID 'this-is-deprecated' GNOME_SHELL_SESSION_MODE 'ubuntu' GNOME_TERMINAL_SCREEN '/org/gnome/Terminal/screen/ad34faf4_0179_4a5f_b2d2_a59f791e49da' GNOME_TERMINAL_SERVICE ':1.106' GPG_AGENT_INFO '/run/user/1000/gnupg/S.gpg-agent:0:1' GTK_MODULES 'gail:atk-bridge' HOME '/home/andrea' HTTP_ACCEPT 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9' HTTP_ACCEPT_ENCODING 'gzip, deflate, br' HTTP_ACCEPT_LANGUAGE 'it-IT,it;q=0.9,en-US;q=0.8,en;q=0.7' HTTP_CONNECTION 'keep-alive' HTTP_COOKIE ('csrftoken=iD3hPtfJJBZVhspWJCd6lBixHZlQXDGTNNcNxOeXHP8sMPojFWdj44KmuWLhofBt; ' 'sessionid=be6093iztc4amp01m5iem5rqs1hpvmfu') HTTP_HOST 'localhost:8000' HTTP_SEC_FETCH_DEST 'document' HTTP_SEC_FETCH_MODE 'navigate' HTTP_SEC_FETCH_SITE 'none' HTTP_SEC_FETCH_USER '?1' HTTP_UPGRADE_INSECURE_REQUESTS '1' HTTP_USER_AGENT ('Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) ' 'Chrome/86.0.4240.183 Safari/537.36') IM_CONFIG_PHASE '1' INVOCATION_ID '717a5ccecd374f5692251368993fbf92' J2REDIR '/usr/lib/jvm/java-15-oracle' J2SDKDIR '/usr/lib/jvm/java-15-oracle' JAVA_HOME '/usr/lib/jvm/java-15-oracle' JOURNAL_STREAM '9:56281' LANG 'it_IT.UTF-8' LANGUAGE 'it:en' LC_ADDRESS 'it_IT.UTF-8' LC_IDENTIFICATION 'it_IT.UTF-8' LC_MEASUREMENT 'it_IT.UTF-8' LC_MONETARY 'it_IT.UTF-8' LC_NAME 'it_IT.UTF-8' LC_NUMERIC 'it_IT.UTF-8' LC_PAPER 'it_IT.UTF-8' LC_TELEPHONE 'it_IT.UTF-8' LC_TIME 'it_IT.UTF-8' LESSCLOSE '/usr/bin/lesspipe %s %s' LESSOPEN '| /usr/bin/lesspipe %s' LOGNAME 'andrea' LS_COLORS 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MANAGERPID '1639' OLDPWD '/home/andrea/Documenti/Python-WS/django_projects' PAPERSIZE 'a4' PATH '/home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/bin:/home/andrea/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/lib/jvm/java-15-oracle/bin:/usr/lib/jvm/java-15-oracle/db/bin' PATH_INFO '/catalog/borrowed/' PROJECT_HOME '/home/andrea/Devel' PS1 ('(LOCAL-LIBRARY-TUTORIAL-ENV) \\[\\e]0;\\u@\\h: ' '\\w\\a\\]${debian_chroot:+($debian_chroot)}\\[\\033[01;32m\\]\\u@\\h\\[\\033[00m\\]:\\[\\033[01;34m\\]\\w\\[\\033[00m\\]\\$ ') PWD '/home/andrea/Documenti/Python-WS/django_projects/locallibrary' QT_ACCESSIBILITY '1' QT_IM_MODULE 'ibus' QUERY_STRING '' REMOTE_ADDR '127.0.0.1' REMOTE_HOST '' REQUEST_METHOD 'GET' RUN_MAIN 'true' SCRIPT_NAME '' SERVER_NAME 'localhost' SERVER_PORT '8000' SERVER_PROTOCOL 'HTTP/1.1' SERVER_SOFTWARE 'WSGIServer/0.2' SESSION_MANAGER 'local/ubuntu:@/tmp/.ICE-unix/1855,unix/ubuntu:/tmp/.ICE-unix/1855' SHELL '/bin/bash' SHLVL '1' SSH_AGENT_PID '1820' SSH_AUTH_SOCK '/run/user/1000/keyring/ssh' TERM 'xterm-256color' TZ 'Europe/Rome' USER 'andrea' USERNAME 'andrea' VIRTUALENVWRAPPER_HOOK_DIR '/home/andrea/.virtualenvs' VIRTUALENVWRAPPER_PROJECT_FILENAME '.project' VIRTUALENVWRAPPER_PYTHON '/usr/bin/python3' VIRTUALENVWRAPPER_SCRIPT '/usr/local/bin/virtualenvwrapper.sh' VIRTUALENVWRAPPER_VIRTUALENV_ARGS ' -p /usr/bin/python3 ' VIRTUALENVWRAPPER_WORKON_CD '1' VIRTUAL_ENV '/home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV' VTE_VERSION '6003' WINDOWPATH '2' WORKON_HOME '/home/andrea/.virtualenvs' XAUTHORITY '/run/user/1000/gdm/Xauthority' XDG_CONFIG_DIRS '/etc/xdg/xdg-ubuntu:/etc/xdg' XDG_CURRENT_DESKTOP 'ubuntu:GNOME' XDG_DATA_DIRS '/usr/share/ubuntu:/usr/local/share/:/usr/share/:/var/lib/snapd/desktop' XDG_MENU_PREFIX 'gnome-' XDG_RUNTIME_DIR '/run/user/1000' XDG_SESSION_CLASS 'user' XDG_SESSION_DESKTOP 'ubuntu' XDG_SESSION_TYPE 'x11' XMODIFIERS '@im=ibus' _ '/home/andrea/Documenti/Python-WS/Environments/LOCAL-LIBRARY-TUTORIAL-ENV/bin/python3' wsgi.errors <_io.TextIOWrapper name='<stderr>' mode='w' encoding='utf-8'> wsgi.file_wrapper <class 'wsgiref.util.FileWrapper'> wsgi.input <django.core.handlers.wsgi.LimitedStream object at 0x7f0c0434a070> wsgi.multiprocess False wsgi.multithread True wsgi.run_once False wsgi.url_scheme 'http' wsgi.version (1, 0) Settings Using settings module locallibrary.settings Setting Value ABSOLUTE_URL_OVERRIDES {} ADMINS [] ALLOWED_HOSTS [] APPEND_SLASH True AUTHENTICATION_BACKENDS ['django.contrib.auth.backends.ModelBackend'] AUTH_PASSWORD_VALIDATORS '********************' AUTH_USER_MODEL 'auth.User' BASE_DIR PosixPath('/home/andrea/Documenti/Python-WS/django_projects/locallibrary') CACHES {'default': {'BACKEND': 'django.core.cache.backends.locmem.LocMemCache'}} CACHE_MIDDLEWARE_ALIAS 'default' CACHE_MIDDLEWARE_KEY_PREFIX 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DEFAULT_CHARSET 'utf-8' DEFAULT_EXCEPTION_REPORTER 'django.views.debug.ExceptionReporter' DEFAULT_EXCEPTION_REPORTER_FILTER 'django.views.debug.SafeExceptionReporterFilter' DEFAULT_FILE_STORAGE 'django.core.files.storage.FileSystemStorage' DEFAULT_FROM_EMAIL 'webmaster@localhost' DEFAULT_HASHING_ALGORITHM 'sha256' DEFAULT_INDEX_TABLESPACE '' DEFAULT_TABLESPACE '' DISALLOWED_USER_AGENTS [] EMAIL_BACKEND 'django.core.mail.backends.console.EmailBackend' EMAIL_HOST 'localhost' EMAIL_HOST_PASSWORD '********************' EMAIL_HOST_USER '' EMAIL_PORT 25 EMAIL_SSL_CERTFILE None EMAIL_SSL_KEYFILE '********************' EMAIL_SUBJECT_PREFIX '[Django] ' EMAIL_TIMEOUT None EMAIL_USE_LOCALTIME False EMAIL_USE_SSL False EMAIL_USE_TLS False FILE_UPLOAD_DIRECTORY_PERMISSIONS None FILE_UPLOAD_HANDLERS ['django.core.files.uploadhandler.MemoryFileUploadHandler', 'django.core.files.uploadhandler.TemporaryFileUploadHandler'] FILE_UPLOAD_MAX_MEMORY_SIZE 2621440 FILE_UPLOAD_PERMISSIONS 420 FILE_UPLOAD_TEMP_DIR None FIRST_DAY_OF_WEEK 0 FIXTURE_DIRS [] FORCE_SCRIPT_NAME None FORMAT_MODULE_PATH None FORM_RENDERER 'django.forms.renderers.DjangoTemplates' IGNORABLE_404_URLS [] INSTALLED_APPS ['django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'catalog.apps.CatalogConfig'] INTERNAL_IPS [] LANGUAGES [('af', 'Afrikaans'), ('ar', 'Arabic'), ('ar-dz', 'Algerian Arabic'), ('ast', 'Asturian'), ('az', 'Azerbaijani'), ('bg', 'Bulgarian'), ('be', 'Belarusian'), ('bn', 'Bengali'), ('br', 'Breton'), ('bs', 'Bosnian'), ('ca', 'Catalan'), ('cs', 'Czech'), ('cy', 'Welsh'), ('da', 'Danish'), ('de', 'German'), ('dsb', 'Lower Sorbian'), ('el', 'Greek'), ('en', 'English'), ('en-au', 'Australian English'), ('en-gb', 'British English'), ('eo', 'Esperanto'), ('es', 'Spanish'), ('es-ar', 'Argentinian Spanish'), ('es-co', 'Colombian Spanish'), ('es-mx', 'Mexican Spanish'), ('es-ni', 'Nicaraguan Spanish'), ('es-ve', 'Venezuelan Spanish'), ('et', 'Estonian'), ('eu', 'Basque'), ('fa', 'Persian'), ('fi', 'Finnish'), ('fr', 'French'), ('fy', 'Frisian'), ('ga', 'Irish'), ('gd', 'Scottish Gaelic'), ('gl', 'Galician'), ('he', 'Hebrew'), ('hi', 'Hindi'), ('hr', 'Croatian'), ('hsb', 'Upper Sorbian'), ('hu', 'Hungarian'), ('hy', 'Armenian'), ('ia', 'Interlingua'), ('id', 'Indonesian'), ('ig', 'Igbo'), ('io', 'Ido'), ('is', 'Icelandic'), ('it', 'Italian'), ('ja', 'Japanese'), ('ka', 'Georgian'), ('kab', 'Kabyle'), ('kk', 'Kazakh'), ('km', 'Khmer'), ('kn', 'Kannada'), ('ko', 'Korean'), ('ky', 'Kyrgyz'), ('lb', 'Luxembourgish'), ('lt', 'Lithuanian'), ('lv', 'Latvian'), ('mk', 'Macedonian'), ('ml', 'Malayalam'), ('mn', 'Mongolian'), ('mr', 'Marathi'), ('my', 'Burmese'), ('nb', 'Norwegian Bokmål'), ('ne', 'Nepali'), ('nl', 'Dutch'), ('nn', 'Norwegian Nynorsk'), ('os', 'Ossetic'), ('pa', 'Punjabi'), ('pl', 'Polish'), ('pt', 'Portuguese'), ('pt-br', 'Brazilian Portuguese'), ('ro', 'Romanian'), ('ru', 'Russian'), ('sk', 'Slovak'), ('sl', 'Slovenian'), ('sq', 'Albanian'), ('sr', 'Serbian'), ('sr-latn', 'Serbian Latin'), ('sv', 'Swedish'), ('sw', 'Swahili'), ('ta', 'Tamil'), ('te', 'Telugu'), ('tg', 'Tajik'), ('th', 'Thai'), ('tk', 'Turkmen'), ('tr', 'Turkish'), ('tt', 'Tatar'), ('udm', 'Udmurt'), ('uk', 'Ukrainian'), ('ur', 'Urdu'), ('uz', 'Uzbek'), ('vi', 'Vietnamese'), ('zh-hans', 'Simplified Chinese'), ('zh-hant', 'Traditional Chinese')] LANGUAGES_BIDI ['he', 'ar', 'ar-dz', 'fa', 'ur'] LANGUAGE_CODE 'en-us' LANGUAGE_COOKIE_AGE None LANGUAGE_COOKIE_DOMAIN None LANGUAGE_COOKIE_HTTPONLY False LANGUAGE_COOKIE_NAME 'django_language' LANGUAGE_COOKIE_PATH '/' LANGUAGE_COOKIE_SAMESITE None LANGUAGE_COOKIE_SECURE False LOCALE_PATHS [] LOGGING {} LOGGING_CONFIG 'logging.config.dictConfig' LOGIN_REDIRECT_URL '/' LOGIN_URL '/accounts/login/' LOGOUT_REDIRECT_URL None MANAGERS [] MEDIA_ROOT '' MEDIA_URL '/' MESSAGE_STORAGE 'django.contrib.messages.storage.fallback.FallbackStorage' 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'] MIGRATION_MODULES {} MONTH_DAY_FORMAT 'F j' NUMBER_GROUPING 0 PASSWORD_HASHERS '********************' PASSWORD_RESET_TIMEOUT '********************' PASSWORD_RESET_TIMEOUT_DAYS '********************' PREPEND_WWW False ROOT_URLCONF 'locallibrary.urls' SECRET_KEY '********************' SECURE_BROWSER_XSS_FILTER False SECURE_CONTENT_TYPE_NOSNIFF True SECURE_HSTS_INCLUDE_SUBDOMAINS False SECURE_HSTS_PRELOAD False SECURE_HSTS_SECONDS 0 SECURE_PROXY_SSL_HEADER None SECURE_REDIRECT_EXEMPT [] SECURE_REFERRER_POLICY 'same-origin' SECURE_SSL_HOST None SECURE_SSL_REDIRECT False SERVER_EMAIL 'root@localhost' SESSION_CACHE_ALIAS 'default' SESSION_COOKIE_AGE 1209600 SESSION_COOKIE_DOMAIN None SESSION_COOKIE_HTTPONLY True SESSION_COOKIE_NAME 'sessionid' SESSION_COOKIE_PATH '/' SESSION_COOKIE_SAMESITE 'Lax' SESSION_COOKIE_SECURE False SESSION_ENGINE 'django.contrib.sessions.backends.db' SESSION_EXPIRE_AT_BROWSER_CLOSE False SESSION_FILE_PATH None SESSION_SAVE_EVERY_REQUEST False SESSION_SERIALIZER 'django.contrib.sessions.serializers.JSONSerializer' SETTINGS_MODULE 'locallibrary.settings' SHORT_DATETIME_FORMAT 'm/d/Y P' SHORT_DATE_FORMAT 'm/d/Y' SIGNING_BACKEND 'django.core.signing.TimestampSigner' SILENCED_SYSTEM_CHECKS [] STATICFILES_DIRS [] STATICFILES_FINDERS ['django.contrib.staticfiles.finders.FileSystemFinder', 'django.contrib.staticfiles.finders.AppDirectoriesFinder'] STATICFILES_STORAGE 'django.contrib.staticfiles.storage.StaticFilesStorage' STATIC_ROOT None STATIC_URL '/static/' TEMPLATES [{'APP_DIRS': True, 'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': ['/home/andrea/Documenti/Python-WS/django_projects/locallibrary/templates'], 'OPTIONS': {'context_processors': ['django.template.context_processors.debug', 'django.template.context_processors.request', 'django.contrib.auth.context_processors.auth', 'django.contrib.messages.context_processors.messages']}}] TEST_NON_SERIALIZED_APPS [] TEST_RUNNER 'django.test.runner.DiscoverRunner' THOUSAND_SEPARATOR ',' TIME_FORMAT 'P' TIME_INPUT_FORMATS ['%H:%M:%S', '%H:%M:%S.%f', '%H:%M'] TIME_ZONE 'Europe/Rome' USE_I18N True USE_L10N True USE_THOUSAND_SEPARATOR False USE_TZ True USE_X_FORWARDED_HOST False USE_X_FORWARDED_PORT False WSGI_APPLICATION 'locallibrary.wsgi.application' X_FRAME_OPTIONS 'DENY' YEAR_MONTH_FORMAT 'F Y'

2条回答

网友
1楼 · 编辑于 2024-09-28 17:08:13

错误可能是在renew_book_librarian()方法的views.py中的HttpResponseRedirect的相反位置
对于传递给reverse('name')的参数，传递正确的“名称”，函数最初从该位置调用

网友
2楼 · 编辑于 2024-09-28 17:08:13

catalog.urls是您从locallibrary.urls调用的内容（具有根URL）
在这种情况下，您需要为catalog.url中的URL提供应用程序名称
eg: app_name = 'catalog'
catalog.url中的所有URL都需要在模板中通过其应用程序名进行调用
eg: {% url 'catalog:book-detail' bookinst.book.pk %}
当您只调用book detail而不使用app name时，django开始查看根url文件，其中不存在此特定url

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