- 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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
function fnRefist() { 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 ; } } / / oUpass if (oUpass.value.length > 20 || oUpass.value.length < 6 ) { oError.innerHTML = "密码必须在6-20之间" ; return ; } else if (oUpass.value! = oUpass1.value) { document.getElementById( "error_box" ).innerHTML = "两次密码不一致" return false; } return true; window.alert( "注册成功!" ) |
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
{ % extends 'index.html' % } { % block title % }注册 { % endblock % } { % block head % } <link rel = "stylesheet" type = "text/css" href = "{{ url_for('static',filename='css/886.css') }}" > <script src = "{{ url_for('static',filename='js/00.js')}}" >< / script> { % endblock % } { % block main % } <div class = "box" > <h2 class = "dd" >注册< / h2> <form action = "{{ url_for('regist') }}" method = "post" > <div class = "input_box" > < input id = "uname" type = "text" placeholder = "请输入用户名" name = "username" > <br>< input id = "unickname" type = "text" placeholder = "请输入昵称" name = "nickname" > < / div> <div class = "input_box" > <br>< input id = "upass" type = "password" placeholder = "请输入密码" name = "password" > <br>< input id = "upass1" type = "password" placeholder = "请确认密码" > < / div> <br><div id = "error_box" ><br>< / div><br> <div> <br> <br><button class = "jj" onclick = "fnRefist()" >注册< / button> < / div> < / form> < / div> { % endblock % } |
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
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() # 增加 # user = User(username='mis1114',password = 'mis1114',nickname='mis1114') # db.session.add(user) # db.session.commit() # # 查询 # User.query.filter(User.username == 'mis1114').first() # #修改 # user =User.query.filter(User.username =='mis1114').first() # user.password='23456' # print(user.username,user.password) # db.session.commit() # # 删除 # user =User.query.filter(User.username =='mis1114').first() # db.session.delete(user) # db.session.commit() @app .route( '/' ) def index(): return render_template( 'index.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 : 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 u 'username existed' else : user = User(username = username, password = password, nickname = nickname) db.session.add(user) db.session.commit() return redirect(url_for( 'login' )) @app .route( '/question/' ) def question(): return render_template( 'question.html' ) if __name__ = = '__main__' : app.run(debug = True ) |