Flask-WTF表单的使用

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使用flask的WTF表单

 #! /usr/bin/env python

 # *-* coding: utf-8 *-*

 from flask import Flask, render_template, request, flash, make_response

 from flask_wtf import FlaskForm

 from wtforms.fields import *

 from wtforms.validators import DataRequired, EqualTo

 app = Flask(__name__)

 # 开启session

 app.secret_key = "aasdfsdf"

 # app.config["SECRET_KEY"] = "abcd"

 app.config["WTF_CSRF_ENABLED"] = False

 @app.route('/')

 def hello_world():

     return 'Hello World!'

 class Login(FlaskForm):

     username = StringField(label="用户名", validators=[DataRequired("请输入用户名")])

     password = PasswordField(label="密码", validators=[DataRequired("请输入密码")])

     password2 = PasswordField(label="密码", validators=[DataRequired("请输入密码"), EqualTo('password', "密码输入不一致")])

     submit = SubmitField(label="提交")

 @app.route("/login", methods=["GET", "POST"])

 def login():

     login_form = Login()

     if request.method == 'POST':

         if login_form.validate_on_submit():

             username = request.form.get("username")

             password = request.form.get("password")

             password2 = request.form.get("password2")

             print(username, password, password2)

             # return make_response("success")

             return "success"

         else:

             print("error")

             flash("参数错误请重新输入")

             # return render_template("demo004.html", form=login_form)

     # else:

     #     print("get")

     #     return render_template("demo004.html", form=login_form)

     return render_template("demo004.html", form=login_form)

 # 定义根路由视图函数，生成表单对象，获取表单数据，进行表单数据验证

 @app.route('/demo2', methods=["get", "post"])

 def demo2():

     register_form = Login()

     # 验证表单

     if register_form.validate_on_submit():

         # 如果代码能走到这个地方，那么就代码表单中所有的数据都能验证成功

         username = request.form.get("username")

         password = request.form.get("password")

         password2 = request.form.get("password2")

         # 假装做注册操作

         print(username, password, password2)

         return "success"

     else:

         if request.method == "POST":

             flash("参数有误或者不完整")

     return render_template('demo004.html', form=register_form)

 if __name__ == '__main__':

     app.run(debug=True)

WTF表单的使用

 <!DOCTYPE html>

 <html lang="en">

 <head>

     <meta charset="UTF-8">

     <title>Title</title>

 </head>

 <body>

 <form method="post">

     {{ form.username.label }}{{ form.username }}<br/>

     {{ form.password.label }}{{ form.password }}<br/>

     {{ form.password2.label }}{{ form.password2 }}<br/>

     {{ form.submit }}

 </form>

 {% for message in get_flashed_messages() %}

     {{ message }}

 {% endfor %}

 </body>

 </html>

前端展示的代码