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| 1 | +from flask import Flask, render_template, request, flash |
| 2 | + |
| 3 | +app = Flask(__name__) |
| 4 | + |
| 5 | +# 导入tf扩展的表单类 |
| 6 | +from flask_wtf import FlaskForm |
| 7 | + |
| 8 | +# 导 入自定义表单需要的字段 |
| 9 | +from wtforms import SubmitField, StringField, PasswordField |
| 10 | + |
| 11 | +# 导入wtf扩展提供的表单验证 |
| 12 | +from wtforms.validators import DataRequired, EqualTo |
| 13 | + |
| 14 | + |
| 15 | +# 自定义表单类、文本字段、密码字段、提交按钮 |
| 16 | +# 使用WTF实现表单 需要自定义一个表单类 |
| 17 | +class LoginForm(FlaskForm): |
| 18 | + # StringField/PasswordField是区别文本框类型， 用户名/密码是指定label值， validators 就是指明要验证哪些项 |
| 19 | + username = StringField('用户名:', validators=[DataRequired()]) |
| 20 | + password = PasswordField('密码:', validators=[DataRequired()]) |
| 21 | + password2 = PasswordField('确认密码:', validators=[DataRequired(), EqualTo('password', '密码填入的不一致')]) |
| 22 | + submit = SubmitField('提交') |
| 23 | + |
| 24 | + |
| 25 | +# 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 |
| 26 | +@app.route('/form', methods=['GEt', 'POST']) |
| 27 | +def login(): |
| 28 | + # 由RegisterForm类生成一个表实例 |
| 29 | + login_form = LoginForm() |
| 30 | + |
| 31 | + # 逻辑处理 |
| 32 | + if request.method == 'POST': |
| 33 | + |
| 34 | + # 获取请求的参数 |
| 35 | + username = request.form.get('username') |
| 36 | + password = request.form.get('password') |
| 37 | + password2 = request.form.get('password2') |
| 38 | + |
| 39 | + # 调用validation_on_submit方法，可以一次性执行完所有验证函数的逻辑 |
| 40 | + if login_form.validate_on_submit(): |
| 41 | + # 进入这里就表示所有的逻辑都验证成功 |
| 42 | + print(username) |
| 43 | + return 'success' |
| 44 | + |
| 45 | + else: |
| 46 | + # message = register_form.get('password2')[0] |
| 47 | + # flash(message) |
| 48 | + flash('参数有误') |
| 49 | + |
| 50 | + # 把实例化后的register_form传入到页面wtf.html中 |
| 51 | + return render_template('login.html', form=login_form) |
| 52 | + |
| 53 | + |
| 54 | +@app.route('/') |
| 55 | +def index(): |
| 56 | + return render_template('index.html') |
| 57 | + |
| 58 | + |
| 59 | +if __name__ == '__mian__': |
| 60 | + app.run() |
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