我正在使用《Django 2 by Examples》一书中的代码示例来构建我的电子商务商店。视图按其应有的方式工作，但任务永远不会执行。没有错误。页面冻结在“正在等待本地主机...”。我在代码中做错了什么？
views.py
import ...
from .tasks import order_created
def order_create(request):
cart = Cart(request)
if request.method == 'POST':
form = OrderCreateForm(request.POST)
if form.is_valid():
order = form.save(commit=False)
if cart.promo_code:
order.promo_code = cart.promo_code
order.discount = cart.promo_code.discount
order.save()
for item in cart:
OrderItem.objects.create(order=order,
book=item['book'],
price=item['price'],
quantity=item['quantity'])
# clear the cart
cart.clear()
print("clean cart")
# set the order in the session
request.session['order_id'] = order.id
print("id - check")
# launch asynchronous task
order_created.delay(order.id) # here I stuck
print("clean cart")
# redirect for payment
return redirect(reverse('payment:process'))
else:
form = OrderCreateForm()
return render(request,
'orders/order/create.html',
{'cart': cart, 'form': form})
任务.py
from celery import task
from django.core.mail import send_mail
from .models import Order
@task
def order_created(order_id):
"""
Task to send an e-mail notification when an order is
successfully created.
"""
order = Order.objects.get(id=order_id)
subject = 'Order nr. {}'.format(order.id)
message = 'Dear {},\n\nYou have successfully placed an order.\
Your order id is {}.'.format(order.first_name,
order.id)
mail_sent = send_mail(subject,
message,
'[email protected]',
[order.email])
return mail_sent
我正在使用
celery==4.2.0Django==2.0.7更新： 在celery.py中添加了这两行代码。冻结已经消失，订单页面现在重定向我以进行进一步的付款程序。但任务
order_created app.conf.broker_url = 'redis://localhost:6379/1'
# app.conf.broker_transport_options = {'visibility_timeout': 3600} # 1 hour.
app.config_from_object('django.conf:settings', namespace='CELERY')
$ redis-cli 监视器
输出：
OK
1531137225.134559 [1 127.0.0.1:48116] "ZREVRANGE" "book:1:purchased_with" "0" "-1"
1531137240.820217 [1 127.0.0.1:48130] "LPUSH" "celery" "{\"body\": \"W1szMV0sIHt9LCB7ImNhbGxiYWNrcyI6IG51bGwsICJlcnJiYWNrcyI6IG51bGwsICJjaGFpbiI6IG51bGwsICJjaG9yZCI6IG51bGx9XQ==\", \"content-encoding\": \"utf-8\", \"content-type\": \"application/json\", \"headers\": {\"lang\": \"py\", \"task\": \"orders.tasks.order_created\", \"id\": \"172d5ec0-9b53-4766-bc04-470631a3a8e4\", \"shadow\": null, \"eta\": null, \"expires\": null, \"group\": null, \"retries\": 0, \"timelimit\": [null, null], \"root_id\": \"172d5ec0-9b53-4766-bc04-470631a3a8e4\", \"parent_id\": null, \"argsrepr\": \"(31,)\", \"kwargsrepr\": \"{}\", \"origin\": \"gen24500@archeski-Inspiron-5558\"}, \"properties\": {\"correlation_id\": \"172d5ec0-9b53-4766-bc04-470631a3a8e4\", \"reply_to\": \"b8b0c8bb-1931-3be2-a044-d588d95c2fe9\", \"delivery_mode\": 2, \"delivery_info\": {\"exchange\": \"\", \"routing_key\": \"celery\"}, \"priority\": 0, \"body_encoding\": \"base64\", \"delivery_tag\": \"249e3deb-489b-4e0b-bde7-54160d3ccaaf\"}}"
1531137464.423873 [0 127.0.0.1:48192] "SELECT" "1"
1531137464.424085 [1 127.0.0.1:48192] "ZREVRANGE" "book:1:purchased_with" "0" "-1"
1531137479.993181 [0 127.0.0.1:48198] "SELECT" "1"
1531137479.993295 [1 127.0.0.1:48198] "PING"
1531137479.994161 [0 127.0.0.1:48200] "SELECT" "1"
1531137479.994260 [1 127.0.0.1:48200] "MULTI"
1531137479.994279 [1 127.0.0.1:48200] "LLEN" "celery"
1531137479.994286 [1 127.0.0.1:48200] "LLEN" "celery\x06\x163"
1531137479.994291 [1 127.0.0.1:48200] "LLEN" "celery\x06\x166"
1531137479.994295 [1 127.0.0.1:48200] "LLEN" "celery\x06\x169"
1531137479.994299 [1 127.0.0.1:48200] "EXEC"
1531137479.994618 [1 127.0.0.1:48200] "SADD" "_kombu.binding.celery" "celery\x06\x16\x06\x16celery"
1531137479.994977 [1 127.0.0.1:48200] "LPUSH" "celery" "{\"body\": \"W1szMl0sIHt9LCB7ImNhbGxiYWNrcyI6IG51bGwsICJlcnJiYWNrcyI6IG51bGwsICJjaGFpbiI6IG51bGwsICJjaG9yZCI6IG51bGx9XQ==\", \"content-encoding\": \"utf-8\", \"content-type\": \"application/json\", \"headers\": {\"lang\": \"py\", \"task\": \"orders.tasks.order_created\", \"id\": \"0fbcecc4-293d-472b-8308-46cb2d9ff345\", \"shadow\": null, \"eta\": null, \"expires\": null, \"group\": null, \"retries\": 0, \"timelimit\": [null, null], \"root_id\": \"0fbcecc4-293d-472b-8308-46cb2d9ff345\", \"parent_id\": null, \"argsrepr\": \"(32,)\", \"kwargsrepr\": \"{}\", \"origin\": \"gen24983@archeski-Inspiron-5558\"}, \"properties\": {\"correlation_id\": \"0fbcecc4-293d-472b-8308-46cb2d9ff345\", \"reply_to\": \"f046e6b8-dd2b-30a4-86a5-0de752377bc7\", \"delivery_mode\": 2, \"delivery_info\": {\"exchange\": \"\", \"routing_key\": \"celery\"}, \"priority\": 0, \"body_encoding\": \"base64\", \"delivery_tag\": \"088bae10-976e-4143-8c28-9ed2e254f2d5\"}}"
1531137480.232213 [1 127.0.0.1:48200] "LPUSH" "celery" "{\"body\": \"W1szM10sIHt9LCB7ImNhbGxiYWNrcyI6IG51bGwsICJlcnJiYWNrcyI6IG51bGwsICJjaGFpbiI6IG51bGwsICJjaG9yZCI6IG51bGx9XQ==\", \"content-encoding\": \"utf-8\", \"content-type\": \"application/json\", \"headers\": {\"lang\": \"py\", \"task\": \"orders.tasks.order_created\", \"id\": \"5aa54a37-95da-43c9-b59e-e6797b7cdd2f\", \"shadow\": null, \"eta\": null, \"expires\": null, \"group\": null, \"retries\": 0, \"timelimit\": [null, null], \"root_id\": \"5aa54a37-95da-43c9-b59e-e6797b7cdd2f\", \"parent_id\": null, \"argsrepr\": \"(33,)\", \"kwargsrepr\": \"{}\", \"origin\": \"gen24983@archeski-Inspiron-5558\"}, \"properties\": {\"correlation_id\": \"5aa54a37-95da-43c9-b59e-e6797b7cdd2f\", \"reply_to\": \"f046e6b8-dd2b-30a4-86a5-0de752377bc7\", \"delivery_mode\": 2, \"delivery_info\": {\"exchange\": \"\", \"routing_key\": \"celery\"}, \"priority\": 0, \"body_encoding\": \"base64\", \"delivery_tag\": \"f78cd769-d7fa-43de-aee9-f7bc5a2c78ac\"}}"
您能否仔细检查您是否像入门指南提到的那样在
__init__.py我遇到了类似的问题，其他一切看起来都正确，但当我使用
.delay()添加导入立即解决了问题。
也许这有帮助：
你必须更新项目conf文件夹init.py文件：
from __future__ import absolute_import
# This will make sure the app is always imported when
# Django starts so that shared_task will use this app.
from .celery import app as celery_app
我也在研究芹菜，两天前就开始了。我的经验是，在将 celery 集成到 Web 应用程序之前，您需要独立部署它。
访问 celery doc 页面后我能够成功启动我的 celery 应用程序。
从最简单的演示开始。
Windows 和 celery4.0+ 上有一点不兼容，解决这个问题：
1 - 安装 gevent:
pip 安装 gevent
2 - 运行芹菜：
celery -A