Python Django芹菜数据库访问

django芹菜击败了目前为止的跑步。。。任务进入队列，工作人员正在执行简单任务：）

现在我想让我的芹菜任务对django数据库进行查询（以获取我想要检查其可达性的IP地址列表）

我可以使用django“helper code”进行查询，还是需要从芹菜到sqlite/mysql建立“原始”连接

谢谢你在这方面的帮助

/拍

芹菜

# http://docs.celeryproject.org/en/latest/django/first-steps-with-django.html
from __future__ import absolute_import, unicode_literals
import os
from celery import Celery
#from celery import shared_task
from django.conf import settings
#settings.configure()
#from portal import models
#logger = logging.getLogger(__name__)
#from portal.models import location

# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'sc_custportal.settings')

app = Celery('sc_custportal')

# Using a string here means the worker don't have to serialize
# the configuration object to child processes.
# - namespace='CELERY' means all celery-related configuration keys
#   should have a `CELERY_` prefix.
app.config_from_object('django.conf:settings', namespace='CELERY')
#app.config_from_object('django.conf:settings')

# Load task modules from all registered Django app configs.
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)


@app.task(bind=True)
def debug_task(self):
    print('Request: {0!r}'.format(self.request))
    queryset = location.objects.all()
#     response = os.system("ping -c 1 8.8.8.8")
#     if response == 0:
#         print("up!")

错误：

[2017-05-04 14:55:09,962: ERROR/PoolWorker-1] Task sc_custportal.celery.debug_task[ecb79b33-7246-4e4e-9b4e-3d7f9b0102dc] raised unexpected: NameError("global name 'location' is not defined",)
Traceback (most recent call last):
  File "/home/pat/Documents/Development/sc_custportal/env/local/lib/python2.7/site-packages/celery/app/trace.py", line 367, in trace_task
    R = retval = fun(*args, **kwargs)
  File "/home/pat/Documents/Development/sc_custportal/env/local/lib/python2.7/site-packages/celery/app/trace.py", line 622, in __protected_call__
    return self.run(*args, **kwargs)
  File "/home/pat/Documents/Development/sc_custportal/sc_custportal/sc_custportal/celery.py", line 32, in debug_task
    queryset = location.objects.all()
NameError: global name 'location' is not defined

树：

---

是的，你可以这样做

from portal.models import MyModel

@app.task(bind=True)
def debug_task(self):
    MyModel.objects.all()

如果您正在考虑访问最近创建/更新的对象，请注意在开始任务之前提交事务。通常，您可以使用

事务启动任务。在提交时（您的任务调用）

。 给你更多的细节

from portal.models import MyModel

@app.task(bind=True)
def debug_task(self):
    MyModel.objects.all()