Python瓶与芹菜出应用程序上下文 [英] Python Flask with celery out of application context

问题描述

我正在使用python Flask构建一个网站。一切都很顺利，现在我正在尝试实施芹菜。

直到我试图用芹菜发送的邮箱发送一封邮件时，情况还是不错的。

完整追踪是

现在我得到一个在应用程序上下文以外工作的错误。  Traceback（最近一次调用的最后一个）：
在trace_task $ b $中的文件/usr/lib/python2.7/site-packages/celery/task/trace.py，第228行b R = retval = fun（* args，** kwargs）
文件/usr/lib/python2.7/site-packages/celery/task/trace.py，行415，在__protected_call__ 
返回self.run（* args，** kwargs）
文件/home/ryan/www/CG-Website/src/util/mail.py，第28行，在send_forgot_email 
 msg =消息（恢复你的十字军游戏帐户）
文件/usr/lib/python2.7/site-packages/flask_mail.py，第178行，在__init__ 
 sender = current_app.config.get （DEFAULT_MAIL_SENDER）
文件/usr/lib/python2.7/site-packages/werkzeug/local.py，第336行，在__getattr__ 
中返回getattr（self._get_current_object（），name ）
文件/usr/lib/python2.7/site-packages/werkzeug/local.py，第295行，在_get_current_object 
返回self .__ local（）
文件/usr/lib/python2.7/site-packages/flask/globals.py，第26行，在_find_app 
中引发RuntimeError（'working outside of application context '）
 RuntimeError：在应用程序上下文之外工作
  

这是我的邮件功能：

$ p code $ @ $ ce $
$ send $ for $ email

msg = Message（Recover your Crusade Gaming Account）
msg.recipients = [email]
msg.sender =Crusade Gaming [e-mail]
msg.html = \

你好人，< br />

您已要求重设密码。 < a href ={0}>点击此处恢复您的帐户< / a>或者将此链接复制并粘贴到您的浏览器中：{0}< br />

如果您没有要求重设密码，请忽略此项。
.format（url_for（'account.forgot'，ref = ref，_external = True））
mail.send（msg）
pre>

这是我的芹菜文件： $ _
$ b

  from __future__ import absolute_import芹菜
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 $ 'src.util.mail']）
 
 
 if __name__ ==__main__：
 celery.start（）
  

解决方案

Flask邮件需要Flask应用程序上下文才能正常工作。在芹菜端实例化应用程序对象并使用应用程序.app_context是这样的：

$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ / code>

I am building a website using python Flask. Everything is going good and now I am trying to implement celery.

That was going good as well until I tried to send an email using flask-mail from celery. Now I am getting an "working outside of application context" error.

full traceback is

  Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/celery/task/trace.py", line 228, in trace_task
    R = retval = fun(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/celery/task/trace.py", line 415, in __protected_call__
    return self.run(*args, **kwargs)
  File "/home/ryan/www/CG-Website/src/util/mail.py", line 28, in send_forgot_email
    msg = Message("Recover your Crusade Gaming Account")
  File "/usr/lib/python2.7/site-packages/flask_mail.py", line 178, in __init__
    sender = current_app.config.get("DEFAULT_MAIL_SENDER")
  File "/usr/lib/python2.7/site-packages/werkzeug/local.py", line 336, in __getattr__
    return getattr(self._get_current_object(), name)
  File "/usr/lib/python2.7/site-packages/werkzeug/local.py", line 295, in _get_current_object
    return self.__local()
  File "/usr/lib/python2.7/site-packages/flask/globals.py", line 26, in _find_app
    raise RuntimeError('working outside of application context')
RuntimeError: working outside of application context

This is my mail function:

@celery.task
def send_forgot_email(email, ref):
    global mail
    msg = Message("Recover your Crusade Gaming Account")
    msg.recipients = [email]
    msg.sender = "Crusade Gaming [e-mail]"
    msg.html = \
        """
        Hello Person,<br/>

        You have requested your password be reset. <a href="{0}" >Click here recover your account</a> or copy and paste this link in to your browser: {0} <br />

        If you did not request that your password be reset, please ignore this.
        """.format(url_for('account.forgot', ref=ref, _external=True))
    mail.send(msg)

This is my celery file:

from __future__ import absolute_import

from celery import Celery

celery = Celery('src.tasks',
                broker='amqp://',
                include=['src.util.mail'])


if __name__ == "__main__":
    celery.start()

解决方案

Flask-mail needs the Flask application context to work correctly. Instantiate the app object on the celery side and use app.app_context like this:

with app.app_context():
    celery.start()

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