获取 AttributeError：“ASGIRequest”对象在 daphne django 中没有属性“get”

Posted 2023-03-15

【中文标题】获取 AttributeError：“ASGIRequest”对象在 daphne django 中没有属性“get”

【英文标题】：Getting AttributeError: 'ASGIRequest' object has no attribute 'get' in daphne django

【发布时间】：2021-10-23 21:43:45

【问题描述】：

我正在尝试在 daphne 网络服务器而不是 uvicorn 上运行我的 fastapi 代码，因为我的最终目标是在 uvicorn 不可用的 android 上运行它。 此时我已经调试我的应用程序几个小时了。全部设置好。这是我的代码：

settings.py

"""
Django settings for myproject 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/
"""

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/3.2/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'django-insecure-_n5hy*-sk6y0&mcgu6&_s*+ql5fvujw+ndccjobc0g8lryx!^z'

# 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 = 'myproject.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 = 'myproject.wsgi.application'


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

DATABASES = 
    'default': 
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': 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

ALLOWED_HOSTS = ['*'] #my change
ROOT_URLCONF = "myproject.urlconf" #my change

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

STATIC_URL = '/static/'

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

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

urlconf.py

from django.urls import path
import views

urlpatterns = [
    path('coordinates/', views.main),
  
] 

views.py

from fastapi import FastAPI
from datetime import datetime
from pydantic import BaseModel
from fastapi.middleware.cors import CORSMiddleware
def main(response):     
    app = FastAPI()


    origins = ["*"]

    app.add_middleware(
        CORSMiddleware,
        allow_origins=origins,
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
    )

    @app.post("/") #get
    def root():
        return "message": "Hello World"

    directionX = 0
    directionY = 0
    Gas = 0
    @app.get("/coordinates/") #post is used to get data, but I can send it using get and query parameters response_model=Item)
    def getcoordinates(direction_x,direction_y,gas): #http://127.0.0.1:8000/coordinates/?direction_x=0&direction_y=10&gas=50
        global directionX,directionY, Gas #changed async def to def 
        directionX = direction_x
        directionY = direction_y
        Gas = gas
        return "data":(direction_x,direction_y,gas)


    return HttpResponse(status=200) #works, ok

asgi.py

"""
ASGI config for myproject project.

It exposes the ASGI callable as a module-level variable named ``application``.

For more information on this file, see
https://docs.djangoproject.com/en/3.2/howto/deployment/asgi/
"""

import os

from django.core.asgi import get_asgi_application

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myproject.settings') #myproject.settings

application = get_asgi_application()

启动文件的终端命令：

daphne -b 0.0.0.0 -p 8000  myproject.asgi:application

我在浏览器中访问http://0.0.0.0:8000/coordinates时的错误日志：

2021-08-23 14:00:35,107 INFO     Starting server at tcp:port=8000:interface=0.0.0.0
2021-08-23 14:00:35,108 INFO     HTTP/2 support not enabled (install the http2 and tls Twisted extras)
2021-08-23 14:00:35,108 INFO     Configuring endpoint tcp:port=8000:interface=0.0.0.0
2021-08-23 14:00:35,109 INFO     Listening on TCP address 0.0.0.0:8000
Internal Server Error: /coordinates/
Traceback (most recent call last):
  File "/home/petr/.local/lib/python3.8/site-packages/asgiref/sync.py", line 482, in thread_handler
    raise exc_info[1]
  File "/home/petr/.local/lib/python3.8/site-packages/django/core/handlers/exception.py", line 38, in inner
    response = await get_response(request)
  File "/home/petr/.local/lib/python3.8/site-packages/django/utils/deprecation.py", line 135, in __acall__
    response = await sync_to_async(
  File "/home/petr/.local/lib/python3.8/site-packages/asgiref/sync.py", line 444, in __call__
    ret = await asyncio.wait_for(future, timeout=None)
  File "/usr/lib/python3.8/asyncio/tasks.py", line 455, in wait_for
    return await fut
  File "/usr/lib/python3.8/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/home/petr/.local/lib/python3.8/site-packages/asgiref/sync.py", line 486, in thread_handler
    return func(*args, **kwargs)
  File "/home/petr/.local/lib/python3.8/site-packages/django/middleware/clickjacking.py", line 26, in process_response
    if response.get('X-Frame-Options') is not None:
AttributeError: 'ASGIRequest' object has no attribute 'get'
2021-08-23 14:00:45,987 ERROR    Internal Server Error: /coordinates/
Traceback (most recent call last):
  File "/home/petr/.local/lib/python3.8/site-packages/asgiref/sync.py", line 482, in thread_handler
    raise exc_info[1]
  File "/home/petr/.local/lib/python3.8/site-packages/django/core/handlers/exception.py", line 38, in inner
    response = await get_response(request)
  File "/home/petr/.local/lib/python3.8/site-packages/django/utils/deprecation.py", line 135, in __acall__
    response = await sync_to_async(
  File "/home/petr/.local/lib/python3.8/site-packages/asgiref/sync.py", line 444, in __call__
    ret = await asyncio.wait_for(future, timeout=None)
  File "/usr/lib/python3.8/asyncio/tasks.py", line 455, in wait_for
    return await fut
  File "/usr/lib/python3.8/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/home/petr/.local/lib/python3.8/site-packages/asgiref/sync.py", line 486, in thread_handler
    return func(*args, **kwargs)
  File "/home/petr/.local/lib/python3.8/site-packages/django/middleware/clickjacking.py", line 26, in process_response
    if response.get('X-Frame-Options') is not None:
AttributeError: 'ASGIRequest' object has no attribute 'get'
127.0.0.1:58158 - - [23/Aug/2021:14:00:45] "GET /coordinates/" 500 76195
Not Found: /favicon.ico
2021-08-23 14:00:46,611 WARNING  Not Found: /favicon.ico
127.0.0.1:58158 - - [23/Aug/2021:14:00:46] "GET /favicon.ico" 404 2120

非常感谢任何可以帮助我的人！

【问题讨论】：

Django 中的 FastAPI？ ??????

@JPG 是的，因为 fastapi 无法自行运行。它需要 uvicorn 或 daphne（在 django 下运行）才能运行。现在我请求你删除你的反对票。

【参考方案1】：

Daphne 由 Django 项目维护，但您可以自行安装。要安装它，首先切换到您的虚拟环境（如果您正在使用），然后运行：

python -m pip install daphne

然后将 FastAPI 代码从 Django 视图中删除到它自己的文件中，例如main.py

from fastapi import FastAPI
from datetime import datetime
from pydantic import BaseModel
from fastapi.middleware.cors import CORSMiddleware

app = FastAPI()


origins = ["*"]

app.add_middleware(
    CORSMiddleware,
    allow_origins=origins,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

@app.post("/") #get
def root():
    return "message": "Hello World"

...

现在，如果您切换到与 main.py 相同的目录，您可以使用以下命令运行您的文件：

daphne -b 0.0.0.0 -p 8000 main:app

【讨论】：

你好。我一直在尝试将此 daphne 服务器与 pagekite 一起使用，以使其可以从任何地方访问。我试过 python3 pagekite.py --frontend=something.pagekite.me --service_on=0.0.0.0:8000 并且python控制台说：〜``` Flying builtin HTTPD as something.pagekite.me:8080 - something.pagekite.me:8080 93.153.49.187 something.pagekite.me:8080 (builtin)

当我转到 0.0.0.0:8000/coordinates/… 时，我得到了预期的 json。当我去 something.pagekite.me:8080/coordinates/?direction_x=1&direction_y=2&gas=52 我得到错误 404

你能帮忙吗？

这听起来像是一个单独的问题，而且我之前没有使用过 pagekite，所以我恐怕无法帮助您