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
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() ''' user=User.query.filter(User.username=='mis1',password='mis1') db.session.add(user) db.session.commit() user=User.query.filter(User.username=='mis1').first() user.password='123456' user.username='mis1' print(user.username,user.password) db.session.commit() ''' @app.route('/') def index(): context={'question':Question.query.order_by('-creat_tiome').all} return render_template('index.html',**context) @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') nickname = request.form.get('nickname') user = User,query.filter(User.username==username).first() if user: return 'username existed' else: user=User(username=username,password=password,nickname=nickname) db.seesion.add(user) db.seesion.commit() return redirect(url_for('login')) return render_template('regist.html') if __name__=='__main__': app.run()
function fnLogin() { var oUname = document.getElementById("uname") var oName = document.getElementById("nname") var oError = document.getElementById("error_box") var oUpass = document.getElementById("upass") var oUpass1=document.getElementById("upass1") var isError=true; oError.innerHTML = "<br>" //unname if (oUname.value.length < 6 || oUname.value.length > 20) { oError.innerHTML = "用户名6-20位"; isError=false; return;isError; } else if ((oUname.value.charCodeAt(0) >= 48) && (oUname.value.charCodeAt(0) <= 57)) { oError.innerHTML = "first letter."; isError=false; return;isError; } 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 = "only letter or number"; isError=false; return;isError; } } //upass if (oUpass.value.length < 6 || oUpass.value.length > 12) { oError.innerHTML = "密码6-12位" isError=false; return;isError; } //uupass if (oUpass.value!=oUpass1.value) { document.getElementById("error_box").innerHTML="两次密码不一致" isError=false; return;isError; } //name if (oName.value.length < 3 || oName.value.length > 6) { oError.innerHTML = "昵称3-6位"; isError=false; return;isError; }else for (var i = 0; i < oUname.value.length; i++){ if ((oName.value.charCodeAt(i) < 48) || (oName.value.charCodeAt(i) > 57) && (oName.value.charCodeAt(i) < 97) || (oName.value.charCodeAt(i) > 122)) { oError.innerHTML = "only letter or number"; isError=false; return;isError; } } return isError; window.alert("登陆成功!") }
{% extends'base.html' %} {% block title %}注册{% endblock %} {% block head %} <link href="{{ url_for('static',filename='css/login.css') }}" rel="stylesheet" type="text/css"> <script src="{{ url_for('static',filename='js/regist.js') }}"></script> {% endblock %} {% block main %} <div class="box"> <h2>广州商学院</h2> <h3>注册</h3> <form action="{{url_for('regist')}}" method="post"></form> <div class="input_box"> <input id="uname" type="text" placeholder="请输入用户名" name="username" style="width:300px"> </div> <div class="input_box"> <input id="upass" type="password" placeholder="请输入密码" name="password" style="width:300px"><br> <input id="upass1" type="password" placeholder="请重复输入密码" style="width:300px"> </div> <div class="input_box"> <input id="nname" type="password" placeholder="请输入昵称" name="nickname" style="width:300px"> </div> </div> <br> <div id="error_box"><br></div> <div class="input_box"> <button onclick="fnLogin()">注册</button><br> </div> </div> {% endblock %}