AttributeError: Object "NoneType" has no attribute "application" when trying to send mail in Flask
I am following the flask tutorial to practice flash mail, but I am running into something that seems like a bug. I don’t understand what happened?
This is my code:
def send_email(to, subject, template, **kwargs):
msg = Message(app.config['FLASKY_MAIL_SUBJECT_PREFIX'] + subject,
sender=app.config['FLASKY_MAIL_SENDER'], recipients=[to])
msg.body = render_template(template + '.txt', **kwargs)
msg.html = render_template(template + '.html', **kwargs)
mail.send(msg)
This is the error information:
Traceback (most recent call last):
File "ch6_1.py", line 64, in <module>
send_email(app ,MAIL_USERNAME, "test mail", "hello")
File "ch6_1.py", line 50, in send_email
msg.body = render_template(template + '.txt', **kwargs)
File "D:\INSTALL\Python\lib\site-packages\flask\templating.py", line 126, in r
ender_template
ctx.app.update_template_context(context)
AttributeError: 'NoneType' object has no attribute 'app'
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1 answer
When I call with app.app_context():
I solved my problem.
def send_email(to, subject, template, **kwargs):
msg = Message(app.config['FLASKY_MAIL_SUBJECT_PREFIX'] + subject,
sender=app.config['FLASKY_MAIL_SENDER'], recipients=[to])
with app.app_context():
msg.body = render_template(template + '.txt', **kwargs)
msg.html = render_template(template + '.html', **kwargs)
mail.send(msg)
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