完成注册功能
- js文件： onclick函数return True时才提交表单，return False时不提交表单。
- html文件：
- <form>中设置 action和method="post"
- <input> 中设置 name
- 主py文件中：
- from flask import request, redirect, url_for
- @app.route('/regist/', methods=['GET', 'POST’])
def regist():
if request.method == 'GET':
return render_template('regist.html')
else:
username = request.form.get(‘username’)#获取form中的数据
判断用户名是否存在
存到数据库中
redirect重定向到登录页
function tnlogin() {
var oUname = document.getElementById("uname")
var oError = document.getElementById("error_box")
var oUpass = document.getElementById("upass")
var oUpass1 = document.getElementById("upass1")
oError.innerHTML = "<br>"
if (oUname.value.length < 6 || oUname.value.length > 20) {
oError.innerHTML = "用户名必须在6-20之间";
return;
} else if ((oUname.value.charCodeAt(0) >= 48) && (oUname.value.charCodeAt(0) <= 57)) {
oError.innerHTML = "首字母不能为数字";
return;
} else for (var i = 0; i < oUname.value.length; i++) {
if ((oUname.value.charCodeAt(i) < 48) || (oUname.value.charCodeAt(i) > 57) && ((oUname.value.charCodeAt(i) < 97)) || oUname.value.charCodeAt(i) > 122) {
oError.innerHTML = "只能填写数字或字母";
return;
}
}
if (oUpass.value.length > 20 || oUpass.value.length < 6) {
oError.innerHTML = "密码必须在6-20之间";
return;
} else if (oUpass!= oUpass1) {
document.getElementById("error_box").innerHTML = "两次密码不一致"
return false;
}
return true;
window.alert("注册成功！")
}
{% extends 'base.html' %}
{% block title %}
注册
{% endblock %}
{% block head %}
<link rel="stylesheet" type="text/css" href="{{ url_for('static',filename='css/zc.css') }}">
<script src="{{ url_for('static',filename='js/zc.js')}}"></script>
{% endblock %}
{% block main %}
<body>
<div class="box">
<h2 class="d">注册</h2>
<form action="{{ url_for('zc') }}"method="post">
<div class="input_box">
<input style="background-color: deepskyblue;" id="uname" type="text" placeholder="请输入你的昵称" name="username">
</div>
<br>
<div class="input_box">
<input style="background-color: deepskyblue;" id="upass" type="password" placeholder="请输入你的密码" name="password">
</div>
<br>
<div class="input_box">
<input style="background-color: deepskyblue;" id="upass" type="password" placeholder="请再输入密码" name="password1">
</div>
<br>
<div id="error_box"><br></div>
<div class="input_box">
<button class="dl" onclick="fnLogin()">注册</button>
</div>
<br>
</div>
</div>
</body>
</html>
{% endblock %}
py文件
from flask import Flask,render_template,request,redirect,url_for,session
from flask_sqlalchemy import SQLAlchemy
import config
from functools import wraps
from datetime import datetime
app = Flask(__name__)
app.config.from_object(config)
db = SQLAlchemy(app)
class User(db.Model):
__tablename__ = 'user'
id = db.Column(db.Integer,primary_key=True,autoincrement=True)
username = db.Column(db.String(20),nullable=False)
password = db.Column(db.String(20),nullable=False)
# nickname = db.Column(db.String(50))
# db.create_all()
@app.route('/')
def base():
return render_template('base.html')
@app.route('/ll/')
def ll():
return render_template('ll.html')
@app.route('/zc/',methods=['GET','POST'])
def zc():
if request.method=='GET':
return render_template('zc.html')
else:
username=request.form.get('username')
password=request.form.get('password')
user = User.query.filter(User.username==username).first()
if user:
return u'username existed'
else:
user = User(username=username, password= password)
db.session.add(user)
db.session.commit()
return redirect(url_for('ll'))
if __name__ == '__main__':
app.run(debug=True)
