在验证表单后,wtforms会引发验证错误

Question

我有一个收集信用卡信息的注册表.工作流程如下:

• 用户通过条带输入注册数据和卡数据.
• 该表单已针对注册数据进行验证.
• 如果表单有效,则处理付款.
• 如果付款通过,一切都很好,用户已注册并继续前进.
• 如果付款失败,我希望能够在表单的隐藏字段上引发验证错误.那可能吗？

这是表单提交代码:

def register():
form = RegistrationForm()
if form.validate_on_submit():

    user = User(
        [...]
    )

    db.session.add(user)

    #Charge
    amount = 10000

    customer = stripe.Customer.create(
        email=job.company_email,
        card=request.form['stripeToken']
    )
    try:

        charge = stripe.Charge.create(
            customer=customer.id,
            amount=amount,
            currency='usd',
            description='Registration payment'
        )
    except StripeError as e:
        ***I want to raise a form validation error here if possible.***

    db.session.commit()
    return redirect(url_for('home'))

return render_template('register.html', form=form)

Answer 1

我通过手动将错误添加到我想要的字段来解决它.

它看起来像那样

try:

    [...]
except StripeError as e:
    form.payment.errors.append('the error message')
else:
    db.session.commit()
    return redirect(url_for('home'))