NoReverseMatch at /login/ Reverse for '' 未找到。 '' 不是有效的視圖 function 或模式名稱

Question

我不知道為什么會出現這個問題。 登錄頁面呈現良好。 但是當我在填寫 forms 后單擊Log In按鈕時，我收到此錯誤。 誰能幫我解決這個問題？

我的設置.py：

"""
Django settings for Abrar_Class project.

Generated by 'django-admin startproject' using Django 3.2.6.

For more information on this file, see
https://docs.djangoproject.com/en/3.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.2/ref/settings/
"""
import os
from pathlib import Path

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.2/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'django-insecure-u($1uynkkaqw6bvn_1ewdv@92pvgzy%yi3$z8_+ssl-65jgt@%'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []

import sys

sys.modules['fontawesome_free'] = __import__('fontawesome-free')


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'class2.apps.Class2Config',
    'crispy_forms',
    'django_bootstrap_icons',
    'fontawesome_free',
]

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',
]

ROOT_URLCONF = 'abrar_class.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        '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',
            ],
        },
    },
]

WSGI_APPLICATION = 'abrar_class.wsgi.application'


# Database
# https://docs.djangoproject.com/en/3.2/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}


# Password validation
# https://docs.djangoproject.com/en/3.2/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/3.2/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.2/howto/static-files/


STATIC_URL = 'static/'

STATICFILES_DIRS = [
    os.path.join(BASE_DIR, 'static'),
]


LOGIN_REDIRECT_URL = ""

# Default primary key field type
# https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

我的 urls.py：

from django import VERSION
from django.urls import path
from django.contrib.auth import views as auth_views
from .views import CourseDetailView, CourseListView, YourCourses, ProfileDetailView
from . import views


from . import views

urlpatterns = [
    path("", CourseListView.as_view(), name="index"),
    path("login/", auth_views.LoginView.as_view(template_name='class/login.html'), name='login'),
    path("logout", views.logout_view, name="logout"),
    path("register", views.register, name="register"),
    path("<slug>", CourseDetailView.as_view(), name="course"),
    path('get_enrolled/<slug>/', views.get_enrolled, name='get_enrolled'),
    path('your_courses/', YourCourses.as_view(), name='your_courses'),
    path('profile/<int:pk>/', ProfileDetailView.as_view(), name='profile'),
]

我的 login.html 文件：

{% extends "class/base.html" %}
{% load crispy_forms_tags %}
{% block content %}
    <br>
    <div class="content-section">
        <form method="POST">
            {% csrf_token %}
            <fieldset class="form-group" style="color: #f5a425">
                <legend class="border-bottom mb-4" style="color:#f5a425;">Log In</legend>
                {{ form|crispy }}
            </fieldset>
            <div class="form-group">
                <button class="btn btn-outline-warning" type="submit">Login</button>
            </div>
        </form>
        <div class="border-top pt-3">
            <small class="text-muted">
                Need An Account? <a class="ml-2" href="{% url 'register' %}">Sign Up</a>
            </small>
        </div>
    </div>
{% endblock content %}

Answer 1

您已指定LOGIN_REDIRECT_URL = "" 。 此設置的文檔說：

URL 或命名為 URL 模式，當LoginView沒有獲得下一個GET 參數時，請求在登錄后重定向。

這意味着發生的事情是 Django 假設您指定了 url 名稱而不是 url。 如果要重定向到主頁，可以改為如下設置：

LOGIN_REDIRECT_URL = "/"

或者您實際上可以使用 url 名稱：

LOGIN_REDIRECT_URL = "index"