完成注册功能
Posted 100彭楚殷
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- 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:存在报错
不存在，存到数据库中
redirect重定向到登录页
from flask import Flask,render_template,request,redirect,url_for from flask_sqlalchemy import SQLAlchemy import config 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(20)) #db.create_all() # user = User(username=\'micssa\',password=\'213232\') # db.session.add(user) # db.session.commit() # # user = User(username=\'mic45878\',password=\'2222222\') # db.session.add(user) # db.session.commit() #增加 # user=User.query.filter(User.username==\'micssa\').first() # print(user.id,user.username,user.password) #查找 # user=User.query.filter(User.username==\'micssa\').first() # user.password = \'111111\' # db.session.commit() #修改 # user=User.query.filter(User.username==\'micssa\').first() # db.session.delete(user) # db.session.commit() #删除 @app.route(\'/\') def vi(): return render_template("base.html") @app.route(\'/first\') def base(): return render_template("base.html") @app.route("/login") def login(): return render_template("login.html") @app.route("/regist",methods=["GET","POST"]) def regist(): if request.method == "GET": return render_template("regist.html") else: usern = request.form.get("newn") passw = request.form.get("newp") user = User.query.filter(User.username==usern).first() if user: return "用户名已存在！" else: user = User(username = usern,password = passw) db.session.add(user) db.session.commit() return redirect(url_for("login")) if __name__ == \'__main__\': app.run(debug=True)
SQLALCHEMY_DATABASE_URI = \'mysql+pymysql://root:@127.0.0.1:3306/mis_db?charset=utf8\' SQLALCHEMY_TRACK_MODIFICATIONS = False
{% extends \'base.html\' %} {% block title %} 注册 {% endblock %} {% block head %} <link href="{{url_for("static",filename="css/vv.css") }}" rel="stylesheet" type="text/css"> <script src="{{ url_for("static",filename="js/new.js") }}"></script> {% endblock %} {% block main %} <body bgcolor="#778899" class="div4"> <div class="div1"> <h2 class="title"></h2> <form action="{{ url_for("regist") }}" method="post"> <div class="normal-title"> <a class="div2" href="login.html">登录</a> <b>|</b> <a class="div2" href="regist.html">注册</a> </div> <div class="div3"> 用户：<input id="newname1" type="text" placeholder="请输入昵称" name="newn"> </div> <div class="div3"> 密码：<input id="newpass1" type="text" placeholder="请输入密码" name="newp"> </div> <div class="div3"> 密码：<input id="newpass2" type="text" placeholder="请再次输入密码" name="newp"> </div> <div id="error_box"><br></div> <div class="div3"> <button onclick="myRegister()">Regist</button> </div> <div class="div2">ByYin</div> </form>> </div> <br> </body> {% endblock %} </html>
function myRegister() { var nName = document.getElementById("newname1"); var nError = document.getElementById("error_box"); var nPass =document.getElementById("newpass1"); var nPass1=document.getElementById("newpass2"); var isError = true; nError.innerHTML="<br>"; if (nName.value.length < 6||nName.value.length > 20) { nError.innerHTML = "用户名为6位到20位！"; isError = false; return isError; } else if ((nName.value.charCodeAt(0)) >= 48 && nName.value.charCodeAt(0) <= 57) { nError.innerHTML = "用户名首字母不能为数字"; isError = false; return isError; } else for(var i=0;i<nName.value.length;i++){ if((nName.value.charCodeAt(i)<48||nName.value.charCodeAt(i)>57)&&(nName.value.charCodeAt(i)<97||nName.value.charCodeAt(i)>122)){ nError.innerHTML="用户名只能为字母或数字！"; isError = false; return isError; } } if (nPass.value.length<6||nPass.value.length>20){ nError.innerHTML="密码为6-20位！"; isError = false; return isError; } if(nPass.value!=nPass1.value){ nError.innerHTML="您输入的密码不一致！请重新输入！"; isError = false; return isError; } window.alert("您已注册成功！"); return isError; }
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