为什么 Django 不重定向到 url 比较文件?

问题描述 投票:0回答:1

我正在上传两个文件,然后将它们与 xxhash 算法进行比较,如果它们相同或不同,则返回相同的值,但是当提交包含文件的表单时,它不会将其重定向到视图中发挥作用的函数,而是给我错误 404:

找不到页面 (404) 请求方法:GET 请求 URL:http://127.0.0.1:8000/post?file1=f.txt&file2=t.txt 使用 URLconf 定义在 hashhosh.urls 中,Django 尝试了这些 URL 模式,在 此订单:

admin/ [name='home'] 登录/ [name='login'] 比较文件/ [name='compare-files'] 当前路径 post 与其中任何一个都不匹配

为什么会这样? urls.py:

from django.contrib import admin
from django.urls import path
from django.contrib.auth.views import LoginView
from . import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', views.home_view, name='home'),
    path('login/', LoginView.as_view(template_name='login.html'), name='login'),
    path('compare-files/', views.compare_files_view, name='compare-files'),  # Update the URL pattern
]

views.py:

from django.contrib.auth.views import LoginView
from django.shortcuts import render
import xxhash
from django.http import HttpResponse

def home_view(request):
    return render(request, 'home.html')

def login_view(request):
    return render(request, 'login.html')

def compare_files_view(request):  # Update the view name
    if request.method == 'POST' and 'file1' in request.FILES and 'file2' in request.FILES:
        file1 = request.FILES['file1']
        file2 = request.FILES['file2']
        result = "Same" if compare_files(file1, file2) else "Different"
        return render(request, 'home.html', {'result': result})
    else:
        return render(request, 'home.html')

def compare_files(file1, file2):
    hash1 = xxhash.xxh64(file1.read()).hexdigest()
    hash2 = xxhash.xxh64(file2.read()).hexdigest()
    return hash1 == hash2

home.html:

<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Home</title>
</head>
<body>
    {% block content %}
    {% if user.is_authenticated %}
        Yo wassup {{ user.username }}!
        <form method="post" action="{% url 'compare-files' %}" enctype="multipart/form-data">
            <br>file 1: <br>
            <input type = 'file' name="file1"/>
            <br>file 2: <br>
            <input type = 'file' name="file2"/>
            <br><button type="submit">Compare Files</button>
        </form>
        {% if result %}
            <p>Comparison Result: {{ result }}</p>
        {% endif %}
    {% else %}
        <p>please Login</p>
        <a href="{% url 'login' %}">Login</a>
    {% endif %}
    {% endblock %}
</body>
</html>

设置.py:

"""
Django settings for hashhosh project.

Generated by 'django-admin startproject' using Django 5.0.1.

For more information on this file, see
https://docs.djangoproject.com/en/5.0/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/5.0/ref/settings/
"""

from pathlib import Path

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/5.0/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'django-insecure-5q$^nk1tp-fe)w9x25xqg3sy0fg98bhx7rm8gu!lk%b2*z_tfw'

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

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

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 = 'hashhosh.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [BASE_DIR/'templates'],
        '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 = 'hashhosh.wsgi.application'


# Database
# https://docs.djangoproject.com/en/5.0/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}

AUTHENTICATION_BACKENDS = [
    'hashhosh.backends.xxhash_backend.XXHashAuthBackend',
    'django.contrib.auth.backends.ModelBackend',
]



# Password validation
# https://docs.djangoproject.com/en/5.0/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/5.0/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/5.0/howto/static-files/

STATIC_URL = 'static/'

# Default primary key field type
# https://docs.djangoproject.com/en/5.0/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
LOGIN_REDIRECT_URL = 'home'
python django
1个回答
0
投票

一些修复(至少是我现在能发现的):

  1. 您似乎将项目级别的 urls.py 与应用程序级别的 urls.py 混淆了。您的项目级别 urls.py 与您的 settings.py 位于同一目录中,它应该如下所示:
from django.contrib import admin
from django.urls import path, include

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', include('appname.urls')),  # Change appname to the actual name of your app
]

在您的应用程序目录中(这是您的views.py所在的位置),创建一个urls.py并添加:

from django.urls import path
from . import views

app_name = 'appname'    # Change appname to the name of your app.
urlpatterns = [
    path('home_view/', views.home_view, name='home_view'),
    path('login_view/', views.login_view, name='login_view'),
    # Add other url patterns here
  1. 您没有将您的应用程序包含在settings.py中的INSTALLED_APPS列表中。如图所示包括它:
INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',

    'appname',   # Your app name. Please change to your app name
]
  1. 您尚未在代码中提供应用程序名称。您甚至创建了一个应用程序吗?请参阅官方 django 教程
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