Question

我正在尝试使用flask-mail在芹菜任务中发送邮件，但是我继续收到此运行时错误RuntimeError('working outside of application context',)。这是我在文件中的代码：

from app import app
from celery import Celery
from flask.ext.mail import Message
from flask import current_app

# config
app.config['CELERY_BROKER_URL'] = 'redis://localhost:6379/0'
app.config['CELERY_RESULT_BACKEND'] = 'redis://localhost:6379/0'

# set up celery
celery = Celery(app.name, broker=app.config['CELERY_BROKER_URL'])
celery.conf.update(app.config)

# put the processing task here
@celery.task
def send_results(filename, email_addr):
    msg = Message('testing email', recipients=[email_addr])
    msg.body = 'testing this funct'
    with app.app_context():
        current_app.mail.send(msg)
    print(filename)
    print(email_addr)

请注意，其中有app.app_context()行（此时我不确定它是否正确）

另一件需要注意的事情是应用程序还没有完全完成＆＃34;然而。具体来说，我的意思是应用程序的创建由一个名为create_app的函数处理，如下所示：https://github.com/swarajd/seq2flux/blob/master/app/startup/create_app.py

此功能在manage.py中调用：https://github.com/swarajd/seq2flux/blob/master/manage.py

我尝试在名为views.py的文件中调用此任务，该文件处理所有视图。处理此问题的一个功能如下：

@core_blueprint.route('data_analysis', methods=['GET', 'POST'])
@login_required
def data_analysis():

    # print(request.form)
    form = DataAnalysisForm(CombinedMultiDict((request.files, request.form)))

    # print(form)

    if (request.method == 'POST' and form.validate()):

        # print(request.form)
        # print(request.files)
        file = request.files['seqFile']
        filename = secure_filename(file.filename)
        file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))

        mail_engine = current_app.extensions.get('mail', None)
        # print(mail_engine)

        # print(current_user)
        send_results.delay(filename, current_user.email)


        flash('processing job scheduled!')

        # Redirect to home page
        return redirect(url_for('core.data_analysis'))


    return render_template('core/data_analysis.html', form=form)

重要的一行是：send_results.delay()

我的问题是：即使使用上下文，为什么会抛出运行时错误？

Answer 1

发生这种情况的原因是因为电子邮件MESSAGE本身是在with语句之外创建的，导致运行时错误。

烧瓶邮件＆＃34;用完了上下文错误＆＃34;即使有上下文

1 个答案: