调试=false 时无法显示模型中的图像

Question

我问了另一个关于显示来自模型的图像的问题。这是因为我没有在url模式中添加媒体url。但事实证明，它只工作时，我设置debug=true在设置文件，当我设置debug=false，我又得到404错误，这里有专家帮助吗?我需要为生产设置debug=false

我的url .py文件

from django.contrib import admin
from django.urls import path
from home import views as HomeViews

from django.conf.urls import include, url

from django.conf.urls.static import static
from django.conf import settings
import os
urlpatterns = [
path('admin/', admin.site.urls),
path('',HomeViews.index,name='home')
] 
if settings.DEBUG:
urlpatterns = urlpatterns + static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)
urlpatterns = urlpatterns + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

my Settings file

from pathlib import Path
import os
import django_heroku
import django
# 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/3.1/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'ws^pgf$%!=l8y#%^7anp$rl6*o4u9!86g-ba_uq9pcee=vc@13'
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = False
ALLOWED_HOSTS = []

# Application definition
INSTALLED_APPS = [
'whitenoise.runserver_nostatic',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'home',
]
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',
'whitenoise.middleware.WhiteNoiseMiddleware',
]
ROOT_URLCONF = 'testimage.urls'
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [os.path.join(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 = 'testimage.wsgi.application'

# Database
# https://docs.djangoproject.com/en/3.1/ref/settings/#databases
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': BASE_DIR / 'db.sqlite3',
}
}

# Password validation
# https://docs.djangoproject.com/en/3.1/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/3.1/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/3.1/howto/static-files/
STATIC_URL = '/static/'
STATICFILES_DIRS = [os.path.join(BASE_DIR,"static")]
STATIC_ROOT = os.path.join(BASE_DIR,'staticfiles')

MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
MEDIA_URL = '/media/'
django_heroku.settings(locals())
STATICFILES_STORAGE = 'django.contrib.staticfiles.storage.StaticFilesStorage'

我models.py

from django.db import models
# Create your models here.
class Images(models.Model):
photo = models.ImageField(blank=True, null=True, default=None)
title = models.CharField(max_length=250)
def __str__(self):
return self.title

视图和模板

from django.shortcuts import render
from home.models import Images
# Create your views here.
def index(request):
images = Images.objects.all()
context = {
'images':images
}
return render(request,'home.html',context)

模板

{%for i in images %}
<img src="{{MEDIA_URL}}{{i.photo.url}}" alt="">
{%endfor%}

下面是设置debug=false的错误:

[15/Feb/2021 13:17:05] "GET /media/20210129_205930.jpg HTTP/1.1" 404 179
[15/Feb/2021 13:17:05] "GET /media/20201227_111422.jpg HTTP/1.1" 404 179

请帮帮我。非常感谢!

Answer 1

我也面临同样的问题但是我用下面的代码

解决了这个问题

pip install whitenoise

在settings.py

DEBUG = False
ALLOWED_HOSTS = ['*']
MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'whitenoise.middleware.WhiteNoiseMiddleware',
]

MEDIA_URL = '/media/'
STATIC_URL = '/static/'
MEDIA_ROOT = BASE_DIR / "media"
STATIC_ROOT = BASE_DIR / 'staticfiles'
STATICFILES_DIRS = [(os.path.join(BASE_DIR, 'static'))]
STATICFILES_STORAGE = 'whitenoise.storage.CompressedStaticFilesStorage'

在urls . py

from django.urls import path, include, re_path
from django.conf import settings
from django.conf.urls.static import static
from django.views.static import serve
urlpatterns = [
path('user_area/', admin.site.urls),
path('ckeditor/', include('ckeditor_uploader.urls')),
path('', include('main.urls')),
path('', include('user_area.urls')),
]
urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
urlpatterns += [re_path(r'^media/(?P<path>.*)$', serve, {'document_root': settings.MEDIA_ROOT, }), ]

python manage.py collectstatic

遵循这段代码你将解决你的问题

Answer 2

您应该在settings.py中插入一些ALLOWED_HOSTS，例如:-

ALLOWED_HOSTS = ['*']

或您的网站名称:-

ALLOWED_HOSTS = ['your_website_name']