- 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_forfrom flask_sqlalchemy import SQLAlchemyimport configapp = 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)db.create_all()@app.route('/')def home(): return render_template('index.html')@app.route('/signin/',methods=['GET','POST'])def sign_in(): return render_template('denglu1.html')
@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 u'username existed.' else: user=User(username=username,password=password) db.session.add(user) db.session.commit() return rediect(url_for('login')) if __name__ == '__main__': app.run()
@app.route('/question/') def question(): return render_template('question.html') if __name__ == '__main__': app.run(debug=True)
function fnLogin(){ var oNewname = document.getElementById("uname"); var oNewpass = document.getElementById("upass"); var oAgainname = document.getElementById("aupass"); var oError = document.getElementById("error_box"); var isError=true; oError.innerHTML="" if(oNewname.value.length<6 && oNewname.value.length>12) { oError.innerHTML = "用户名需在6-12位中间"; isError=false; return isError; } else if ((oNewname.value.charCodeAt(0)>=48)&&(oNewname.value.charCodeAt(0)<=57)){ oError.innerHTML ="用户名开头不能为数字"; isError=false; return isError; } else for(var i=0;i57)&&(oNewname.value.charCodeAt(i)<97 || oNewname.value.charCodeAt(i)>122)){ oError.innerHTML = "用户名只能为数字或字母"; isError=false; return isError; } } //密码 if(oNewpass.value.length>12|| oNewpass.value.length<6){ oError.innerHTML="密码需在6-12位中间"; isError=false; return isError; } else if(oNewpass.value != oAgainname.value) { oError.innerHTML="两次密码输入不一致"; isError=false; return isError; } window.alert("注册成功!") }
{% extends'index.html' %}{% block head %} {% endblock %}{% block main %}注 册
{% endblock %}请进行注册