python - 學習flask web 開發 第四章validate_on_submit遇到錯誤，沒有屬性

問題描述

app.py代碼如下：

from flask import Flask, render_templatefrom flask_bootstrap import Bootstrapfrom flask_wtf import Formfrom wtforms import StringField, SubmitField,validatorsfrom wtforms.validators import DataRequired

form表單代碼

@app.route(’/’)def hello_world(): name = None form = NameForm() if form.validata_on_submit():name = form.name.dataform.name.data = ’’ return render_template('index.html',form=form,name=name) class類 class NameForm(Form): name = StringField(’What is your name?’, validators=[DataRequired()]) submit = SubmitField(’Submit’) bugbuiltins.AttributeErrorAttributeError: ’NameForm’ object has no attribute ’validata_on_submit’我在網上試過其他的方法沒用，我也不清楚哪里有問題。希望大家能幫幫我！?。?p>問題解答