Python Flask 表单的创建与验证。_flask创建表单

作者：不正经 | 2024-04-27 23:40:11

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flask创建表单


from flask import Flask, render_template, request
from flask_wtf import FlaskForm
from wtforms.fields.simple import StringField, PasswordField, SubmitField
from wtforms.validators import DataRequired, EqualTo
 
app = Flask(__name__)
 
app.config['SECRET_KEY'] = ';kjlasdklja'
 
 
# 定义表单模型类
class Register(FlaskForm):
    username = StringField(label='用户名', validators=[DataRequired("用户名不能为空")])
    password = PasswordField(label='密码', validators=[DataRequired("密码不能为空")])
    password2 = PasswordField(label='再一次输入密码', validators=[DataRequired("密码不能为空"), EqualTo("password")])
    sumbit = SubmitField(label='提交')
 
 
@app.route("/register", methods=['POST', 'GET'])
def register():
    # 创建表单对象
    form = Register()
    if request.method == "GET":
        return render_template("register.html", form=form)
    if request.method == "POST":
        # 从前端获取数据
        if form.validate_on_submit():
            username = form.username
            password = form.password
            password2 = form.password2
            print(username)
            print(password)
            print(password2)
            return render_template("register.html", form=form)
        else:
            return render_template('404.html')
 
 
if __name__ == '__main__':
    app.run()


<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
Hello world
<br>
{{ data.name }}
<br>
{{ data.age }}
<br>
{{ data.list[1] }}
<br>
{{ "hello_world" | upper | replace('HELLO','HI') }}
<br>
{{ data.list | li2 }}
 
</body>
</html>

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