forms表单

#_*_coding:utf-8_*_
from django import  forms
class regis(forms.Form):
    username = forms.CharField(label=u'用户名',min_length=4,max_length=20,error_messages={'required':u'用户名不能为空哦','min_length':u'用户名长度不能小于4位哦','max_length':u'用户名长度不能大于20位哦'})
    password = forms.CharField(label=u'密码',min_length=6,max_length=256,widget=forms.PasswordInput,error_messages={'required':u'密码不能为空哦','min_length':u'密码长度不能小于6位哦'})
    cpassword = forms.CharField(label=u'确认密码',min_length=6, max_length=256, widget=forms.PasswordInput(attrs={'class':'form-control','placeholder':u'与上面密码保持一致'}),error_messages={'required': u'密码不能为空哦', 'min_length': u'密码长度不能小于6位哦'})


models模型

#coding=utf-8
from django.db import models
class Userinfo(models.Model):
    username = models.CharField(unique=True,max_length=20)
    password = models.CharField(max_length=256)
    def __unicode__(self):
        return self.username


views视图

#conding=utf-8
from django.shortcuts import render,redirect
from django.http import HttpResponse,Http404
from forms import *
from models import Userinfo
from hashlib import sha1
def register(request):
    if request.method == 'POST':
        form = regis(request.POST)
        if form.is_valid():
            user = form.cleaned_data['username']
            pwd = form.cleaned_data['password']
            cpwd = form.cleaned_data['cpassword']
            # encryption
            sh1 = sha1()
            sh1.update(pwd.encode('utf-8'))
            pwdd = sh1.hexdigest()
            if pwd != cpwd:
                return redirect('/')
            Userinfo.objects.get_or_create(username=user,password=pwdd)
            msg='user register success!'
            return render(request,'info.html',{'msg':msg})
        else:
            error_msg = form.errors
            return render(request, 'register.html', {'form': form, 'errors': error_msg})
    else:
        form = regis()
        return render(request, 'register.html', {'form': form})


​注意视图的次序：这里的逻辑很重要​

if request.method == 'POST':
        form = regis(request.POST)
        if form.is_valid():

​使用表单进行数据提交时，不需要指定form的action，自动提交到展示页面的视图，切记注意​

​先判断是提交信息还是普通访问​

​如果不是提交信息，那么就打开注册页面同时携带表单对象，如果是post提交，就获取forms表单regis提交上来的信息​

​再判断表单内容是否符合格式要求，如果符合再判断两次输入的密码是否相等，如果相等则进行数据插入的操作，并且返回info.html页面告知用户注册成功​

​如果表单内容不符合格式要求，则将forms表单中的非空，长度限制等信息返回到注册页面​

注册页面register.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Login</title>
    <style type="text/css">
        .ff{
        margin-top:300px;
        margin-left:500px;
        }
        #log{
        background-color:#ccc;
        margin:0px auto;
        }
    </style>
</head>
<body>
<div id="log">
<form  method="post" class="ff">
    {% csrf_token %}
    <table>
        <tr><td>{{form.username.label_tag}}</td><td>{{form.username}}</td></tr>
        <tr style="color:red"><td>{{errors.username}}</td></tr>
        <tr><td>{{form.password.label_tag}}</td><td>{{form.password}}</td></tr>
        <tr style="color:red"><td>{{errors.password}}</td></tr>
        <tr><td>{{form.cpassword.label_tag}}</td><td>{{form.cpassword}}</td></tr>
        <tr style="color:red"><td>{{errors.cpassword}}</td></tr>
        <tr><td><input type="reset" value="重置"></td><td style="text-align:right"><input type="submit" value="提交"></td></tr>
    </table>
</form>
</div>
</body>
</html>





更多内容详见微信公众号：Python研究所

django实现密码加密的注册（数据对象插入）-结合forms表单实现表单验证_用户名