Migrating from Flask-Mail - Coroutine never awaited

[hiven]

Hello,

I had flask-mail setup and working but I’m trying to migrate to flask-mailing.

I’ve got a question about how I use this when I have my email function in a different file. For example:

jobs.py

async def send_registration_email(uid, token):
    message = Message(
        subject="Flask-Mailing module",
        recipients=["[email protected]"],
        body="This is the basic email body",
        )

    await mail.send_message(message)
    return jsonify(status_code=200, content={"message": "email has been sent"})

views.py

@auth.route('/register', methods=['GET', 'POST'])
def register():
    form = RegisterUserForm()
    if form.validate_on_submit():

        user = User.create(
            username=form.data['username'],
            email=form.data['email'],
            password=form.data['password'],
            remote_addr=request.remote_addr,
        )

        s = URLSafeSerializer(current_app.secret_key)
        token = s.dumps(user.id)

        send_registration_email(user.id, token)

        flash(
            (
                'Sent verification email to {email}'.format(
                    email=user.email
                )
            ),
            'success'
        )
        return redirect(url_for('home.index'))
    return render_template('register.html', form=form)

This type of config that used to work for flask-mail now results in the error:

RuntimeWarning: coroutine 'send_registration_email' was never awaited

Could you help me understand how this kind of setup would work with flask-mailing please?

[marktennyson]

Change the view function (I have checked only one scenario).

You need to use asynchronous view function because coroutine function must be awaited.

@auth.route('/register', methods=['GET', 'POST'])
async def register():
    form = RegisterUserForm()
    if form.validate_on_submit():

        user = User.create(
            username=form.data['username'],
            email=form.data['email'],
            password=form.data['password'],
            remote_addr=request.remote_addr,
        )

        s = URLSafeSerializer(current_app.secret_key)
        token = s.dumps(user.id)

        await send_registration_email(user.id, token)

        flash(
            (
                'Sent verification email to {email}'.format(
                    email=user.email
                )
            ),
            'success'
        )
        return redirect(url_for('home.index'))
    return render_template('register.html', form=form)