python - 运行时错误 : Working outside of application context. Flask - 邮件

Question

from flask import current_app as app
from flask import render_template
from threading import Thread
from flask_mail import Message



def send_async_email(app, msg):
    with app.app_context():
        mail.send(msg)

def send_email(to, subject, template, **kwargs):
    msg = Message(app.config['MAIL_SUBJECT_PREFIX'] + subject,
                  sender=app.config['MAIL_SENDER'], recipients=[to])
    # msg.body = render_template(template + '.txt', **kwargs)
    msg.html = render_template(template + '.html', **kwargs)
    thr = Thread(target=send_async_email, args=(app,msg))
    thr.start()
    return thr
    #mail.send(msg)

运行时错误:在应用程序上下文之外工作。

这通常意味着您尝试使用所需的功能 以某种方式与当前应用程序对象交互。解决 为此，使用 app.app_context() 设置应用程序上下文。请参阅 文档以获取更多信息。

我以为我已经创建了app_context，但代码仍然显示运行时错误。请帮忙，谢谢。

Answer 1

您可以使用如下方式调用 async_send_mail 函数:

   app = current_app._get_current_object()
   thr = Thread(target=async_send_mail, args=[app, msg])
   thr.start()

然后异步函数将如下所示:

def async_send_mail(app, msg):
   with app.app_context():
      mail.send(msg)