django学习（一） form表单编写简单的注册登录页

       HTML form是交互网页的支柱。下面来学习一下使用Django自带 Form表单编写一个简单的注册登录小程序。

一、项目结构如下图：

re_login是app名

二、编写代码：

1、app下models.py:

#coding:utf-8
from django.db import models

# Create your models here.

class Register(models.Model):
   username = models.CharField(max_length = 32,verbose_name = '用户名')
   password = models.CharField(max_length = 32,verbose_name = '密码')
   email = models.EmailField(verbose_name = '注册邮箱')
   phone_number = models.CharField(max_length = 14,verbose_name = '电话号码')

2、在app下创建一个form.py文件：

#coding:utf-8
from django import forms

class UserRegister(forms.Form):
    username = forms.CharField(label='注册用户名', max_length=100)
    password1 = forms.CharField(label='设置密码', widget=forms.PasswordInput())
    password2 = forms.CharField(label='确认密码', widget=forms.PasswordInput())
    email = forms.EmailField(label='电子邮件')
    phone_number = forms.CharField(label='手机号码',max_length=15)


class UserLogin(forms.Form):
    username = forms.CharField(label='用户名', max_length=100)
    password = forms.CharField(label='密码', widget=forms.PasswordInput())

3、app下views.py:

#coding:utf-8
from django.shortcuts import render,render_to_response
import hashlib
from models import Register
from django.template import RequestContext
from form import UserLogin,UserRegister

# Create your views here.
def take_md5(content):
    hash = hashlib.md5()    #创建hash加密实例
    hash.update(content)    #hash加密
    result = hash.hexdigest()  #得到加密结果
    return result

#注册
def register(request):
    if request.method == 'POST':
        form = UserRegister(request.POST)
        if form.is_valid(): #获取表单信息
            username = form.cleaned_data['username']
            namefilter = Register.objects.filter(username = username)
            if len(namefilter) > 0:
                return render_to_response('register.html',{'error':'用户名已存在'},
                                          context_instance=RequestContext(request))
            else:
                password1 = form.cleaned_data['password1']
                password2 = form.cleaned_data['password2']
                if password1 != password2:
                    return render_to_response('register.html',{'error':'两次输入的密码不一致！'},
                                              context_instance=RequestContext(request))
                else:
                    password = take_md5(password1)
                    email = form.cleaned_data['email']
                    phone_number = form.cleaned_data['phone_number']
                    #将表单写入数据库
                    user = Register.objects.create(username=username,password=password,email=email,
                                                   phone_number=phone_number)
                    user.save()
                    return render_to_response('success.html',{'username':username,'operation':'注册'},
                                              context_instance=RequestContext(request))
    else:
        form = UserRegister()
        return render_to_response('register.html',{'form':form},context_instance=RequestContext(request))


#登录
def login(request):
    if request.method == 'POST':
        form = UserLogin(request.POST)
        if form.is_valid(): #获取表单信息
            username = form.cleaned_data['username']
            password = form.cleaned_data['password']
            password = take_md5(password)
            namefilter = Register.objects.filter(username=username,password=password)
            if len(namefilter) > 0:
                return render_to_response('success.html',{'username':username,'operation':'登录'},
                                          context_instance=RequestContext(request))
            else:
                return render_to_response('login.html',{'error':'该用户名不存在！'},
                                          context_instance=RequestContext(request))
    else:
        form =UserLogin()
        return render_to_response('login.html',{'form':form},
                                  context_instance=RequestContext(request))

4、urls.py:

.......
from re_login.views import register,login

urlpatterns = [
    .......
    url(r'^$',login),
    url(r'^login/', login),
    url(r'^register/', register),

]

5、login.html:

    
action="" method="post">
        {% csrf_token %}
        {{ form.as_p }}
        {{ error }}
        type="submit" value="登录">
        href="http://127.0.0.1:8000/register/">注册

    

6、register.html:

    
action="" method="post">
        {% csrf_token %}
        {{ form.as_p }}
        {{ error }}
        type="submit" value="注册">

    

7、success.html:

    
恭喜你，{{ operation }}成功
    href="http://127.0.0.1:8000/login/">返回登录页面

至此，一个能实现简单注册登录功能的完整代码就完成了，页面的样式可以自己看着写