11.21
Posted 037吴宜珊
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了11.21相关的知识,希望对你有一定的参考价值。
登录功能完成:
- js:设置return
- html:设置
- form
- input
- py:
- @app.route设置methods
- GET
- POST
- 读取表单数据
- 查询数据库
- 用户名密码对:
- 记住用户名
- 跳转到首页
- 用户名密码不对:
- 提示相应错误。
- 用户名密码对:
session:
- 从`flask`中导入`session`
- 设置`SECRET_KEY`
- 操作字典一样操作`session`:增加用户名`session[‘username‘]=`username
py:
from flask import Flask,render_template,request,redirect,url_for,session from flask_sqlalchemy import SQLAlchemy import config app = Flask(__name__) app.config.from_object(config) db=SQLAlchemy(app) # class SQLALchemy(object): # pass 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(20)) @app.route(‘/‘) def index(): return render_template(‘index.html‘) @app.route(‘/login/‘, methods=[‘GET‘, ‘POST‘]) def login(): if request.method == ‘GET‘: return render_template(‘login.html‘) else: username = request.form.get(‘username‘) password = request.form.get(‘password‘) # nickname=request.form.get(‘nickname‘) user = User.query.filter(User.username == username).first() if user: session[‘user‘]=username session.permanent=True return redirect(url_for(‘daohang‘)) else: return ‘error username or password‘ return redirect(url_for(‘daohang‘)) @app.route(‘/regist/‘, methods=[‘GET‘, ‘POST‘]) def regist(): if request.method == ‘GET‘: return render_template(‘regist.html‘) else: username = request.form.get(‘username‘) password = request.form.get(‘password‘) user = User.query.filter(User.username == username).first() if user: return ‘username existed‘ else: user = User(username=username, password=password) db.session.add(user) db.session.commit() return redirect(url_for(‘login‘)) @app.route(‘/biaoqian/‘) def biaoqian(): return render_template(‘biaoqian.html‘) if __name__ == ‘__main__‘: app.run()
config:
import os SECRET_KEY = os.urandom(24) DIALECT=‘mysql‘ DRIVER=‘mysqldb‘ USERNAME=‘root‘ PASSWORD=‘ROOT‘ HOST=‘127.0.0.1‘ PORT=‘3306‘ DATABASE=‘mis_db‘ SQLALCHEMY_DATABASE_URI = ‘mysql+pymysql://root:@127.0.0.1:3306/test?charset=utf8‘ SQLALCHEMY_TRACK_MODIFICATIONS = False
login.js
function config() { var oUname = document.getElementById("uname"); var oUpass = document.getElementById("upass"); var oUpass1 = document.getElementById("upass1"); var oError = document.getElementById("error_box"); oError.innerHTML = "<br>"; if (oUname.value.length < 6 || oUname.value.length > 20) { oError.innerHTML = "用户名要6-20之位"; 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; } } // oUpass if (oUpass.value.length < 6 || oUpass.value.length > 20) { oError.innerHTML = "密码要6-20位"; return; } else if (oUpass.value !== oUpass1.value) { oError.innerHTML = "两次密码不一致"; return false; } return true; window.alert("注册成功") }
login.html
{% extends ‘base.html‘ %} {% block title %}注册{% endblock %} {% block head %} <link rel="stylesheet" type="text/css" href="{{ url_for(‘static‘,filename=‘css/zhuce.css‘) }}"> <script src="{{ url_for(‘static‘,filename=‘js/zhuce.js‘) }}"></script> {% endblock %} {% block main %} <div class="box"> <h2>注册</h2> <form action="{{ url_for(‘zhuce‘) }}" method="post"> <div class="input_box"> <input id="uname" type="text" placeholder="请输入用户名" name="username"> </div> <div class="input_box"> <input id="upass" type="password" placeholder="请输入密码" name="password"> </div> <div class="input_box"> <input id="upass1" type="password" placeholder="请再次输入密码"> </div> <div id="error_box"><br></div> <div class="input_box"> <button onclick="fnzhuce()">注册</button> </div> </form> </div> {% endblock %}
以上是关于11.21的主要内容,如果未能解决你的问题,请参考以下文章