Question

我正在尝试使用Django中的websockets这个例子https://github.com/jacobian/channels-example，因为我打算将它用于我的生产应用程序，它在Heroku中托管，并在那里使用Whitenoise。所以，在克隆了上面提到的例子之后，我使用Whitenoise进行了一些调整，但现在首次通过任何浏览器（chrome或FF）访问应用程序时，静态文件不会加载，当我再次刷新时，它会加载静态文件，并在第三次加载它再次关闭，依此类推。这是我的设置文件：

import os
import random
import string
import dj_database_url

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
PROJECT_ROOT = os.path.dirname(os.path.abspath(__file__))

SECRET_KEY = os.environ.get("SECRET_KEY", "".join(random.choice(string.printable) for i in range(40)))
DEBUG = os.environ.get("DEBUG", False)

# Application definition
INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'channels',
    'chat',
)

MIDDLEWARE_CLASSES = (

    'django.middleware.security.SecurityMiddleware',
    'whitenoise.middleware.WhiteNoiseMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',

)

ROOT_URLCONF = 'chat.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',
            ],
            'debug': DEBUG,
        },
    },
)

# Database
# https://docs.djangoproject.com/en/1.9/ref/settings/#databases

DATABASES = {
    'default': dj_database_url.config(default="postgres:///channels-example", conn_max_age=500)
}

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/1.9/topics/i18n/
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True

# Honor the 'X-Forwarded-Proto' header for request.is_secure()
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

# Allow all host headers
ALLOWED_HOSTS = ['*']

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.9/howto/static-files/

STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
STATIC_URL = '/static/'

# Extra places for collectstatic to find static files.
STATICFILES_DIRS = [
    os.path.join(BASE_DIR, 'static'),
]

# Channel settings
CHANNEL_LAYERS = {
    "default": {
        "BACKEND": "asgi_redis.RedisChannelLayer",
        "CONFIG": {
            "hosts": [os.environ.get('REDIS_URL', 'redis://localhost:6379')],
        },
        "ROUTING": "chat.routing.channel_routing",
    },
}

# Logging
LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'handlers': {
        'console': {
            'class': 'logging.StreamHandler',
        },
    },
    'loggers': {
        'django': {
            'handlers': ['console'],
            'propagate': True,
            'level': 'INFO'
        },
        'chat': {
            'handlers': ['console'],
            'propagate': False,
            'level': 'DEBUG',
        },
    },
}

STATICFILES_STORAGE = 'whitenoise.django.GzipManifestStaticFilesStorage'

这是我对routing.py进行更改的另一个文件：

from channels.staticfiles import StaticFilesConsumer
from . import consumers

channel_routing = {
    # This makes Django serve static files from settings.STATIC_URL, similar
    # to django.views.static.serve. This isn't ideal (not exactly production
    # quality) but it works for a minimal example.
    # 'http.request': StaticFilesConsumer(),

    # Wire up websocket channels to our consumers:
    'websocket.connect': consumers.ws_connect,
    'websocket.receive': consumers.ws_receive,
    'websocket.disconnect': consumers.ws_disconnect,
}

Procfile是：

web: daphne chat.asgi:channel_layer --port $PORT --bind 0.0.0.0 -v2
worker: python manage.py runworker -v2

我没有在Heroku上尝试过，就像现在一样，只是在localhost上我观察到这种行为所以甚至没有将解决方案与原始应用程序集成。我使用heroku local在本地运行应用程序。

我做错了什么？在Heroku上准备好Procfile生产中提到的过程吗？

由于

Answer 1

尝试将您的Django频道升级到1.0.3并使用您提到的示例进行白名单3.3.0使用过时的版本和一些错误修复，其中添加了允许Daphne使用whitenoise提供静态内容。或者，您可以利用s3存储桶来提供静态内容，这是使用Django提供静态内容的首选方法。

https://github.com/django/channels/issues/87

使用Django频道提供静态文件问题

1 个答案: