Flask-WTF 和图形验证码-优快云博客

本文链接：https://blog.youkuaiyun.com/myworld_cxc/article/details/104763445

Flask-WTF

表单处理的扩展库，提供了CSRF、字段校验等功能，使⽤⾮常⽅便

安装： pip install flask-wtf

注册表单类

from flask_wtf import FlaskForm  # 导⼊表单基类
from wtforms import StringField,PasswordField,SubmitField
from wtforms.validators import DataRequired,Length,EqualTo,Email

# 自定义表单注册类
class Register(FlaskForm):
    username = StringField()  # 用户名
    password = PasswordField()  # 密码
    pwdagain = PasswordField()  # 重复密码
    email = EmailField(validators=[Email("邮箱格式错误")])
    # wtforms.validators中的Regexp类可以使用正则表达式
    phonenum = StringField(validators=[Regexp(r'^(13\d|14[5|7]|15\d|166|17[3|6|7]|18\d)\d{8}$')])

添加视图函数，创建表单对象，并渲染模板⽂件

from form import Register  # 导入自定义的表单注册类

@app.route('/register/', methods=['GET', 'POST'])
def register():
    form = Register()   # 实例化表单类
    if request.method == 'POST':
    	# 这个⽅法是实现表单校验功能的 csrf，数据正确性 都通过了 则为真 否则为假    
        if form.validate_on_submit():
            # print(request.form)
			 print(form.username) #拿到username的整个标签
			 print(form.username.data) #取出username⾥⾯的value值
			 return '数据提交成功'
    return render_template(('register.html', **locals())

原生渲染表单

<!DOCTYPE html>
<html lang="en"> <head>
 <meta charset="UTF-8">
 <title>Title</title>
</head> 
<body> 
<h2>flask-wtf的表单类</h2> 
<form action=