环境
Python 3.5.1
django 1.9.1
前言
今天用django写web平台，第一时间想到django自带的认证，连session都提供好了，既然有轮子了，我们就不需要自己造了。
扩展django user的部分方法：
一、重写user，将新的user注册到admin，还要重写认证
二、继承user,进行扩展(记得在settings中设置AUTH_USER_MODEL
AUTH_USER_MODEL = "myapp.NewUser")
2.1 继承AbstractUser类
如果你对django自带的User model感到满意, 又希望增加额外的field的话, 你可以扩展AbstractUser类（本文就是这种方法实现）
新的django User类支持email，也可以用email作为用户登陆
2.2 继承AbstractBaseUser类
AbstractBaseUser中只含有3个field: password, last_login和is_active. 这个就是你自己高度定制自己需要的东西
model.py
# class UserManager(BaseUserManager):
# # def create_user(self, email, username, mobile, password=None):
# def create_user(self, email, username, mobile, password=None, **kwargs):
# """通过邮箱，密码，手机号创建用户"""
# if not email:
# raise ValueError(u‘用户必须要有邮箱‘)
#
# user = self.model(
# email = self.normalize_email(email),
# username = username,
# mobile = mobile,
# )
#
# user.set_password(password)
# if kwargs:
# if kwargs.get(‘qq‘, None): user.qq = kwargs[‘qq‘] #qq号
# if kwargs.get(‘is_active‘, None): user.is_active = kwargs[‘is_active‘] #是否激活
# if kwargs.get(‘wechat‘, None): user.wechat = kwargs[‘wechat‘] #微信号
# if kwargs.get(‘refuserid‘, None): user.refuserid = kwargs[‘refuserid‘] #推荐人ID
# if kwargs.get(‘vevideo‘, None): user.vevideo = kwargs[‘vevideo‘] #视频认证
# if kwargs.get(‘identicard‘, None): user.identicard = kwargs[‘identicard‘] #×××认证
# if kwargs.get(‘type‘, None): user.type = kwargs[‘type‘]
# user.save(using=self._db)
# return user
#
# def create_superuser(self,email, username, password,mobile):
# user = self.create_user(email,
# username=username,
# password=password,
# mobile = mobile,
# )
# user.is_admin = True
# user.save(using=self.db)
# return user
#
# class User(AbstractBaseUser, PermissionsMixin):
# """扩展User"""
# email = models.EmailField(verbose_name=‘Email‘, max_length=255, unique=True, db_index=True)
# username = models.CharField(max_length=50)
# qq = models.CharField(max_length=16)
# mobile = models.CharField(max_length=11)
# wechat = models.CharField(max_length=100)
# refuserid = models.CharField(max_length=20)
# vevideo = models.BooleanField(default=False)
# identicard = models.BooleanField(default=False)
# created_at = models.DateTimeField(auto_now_add=True)
# type = models.CharField(u‘用户类型‘, default=‘0‘, max_length=1)
#
# is_active = models.BooleanField(default=True)
# is_admin = models.BooleanField(default=False)
#
# objects = UserManager()
#
# USERNAME_FIELD = ‘email‘
# REQUIRED_FIELDS = [‘mobile‘]
#
# def get_full_name(self):
# # The user is identified by their email address
# return self.email
#
# def get_short_name(self):
# # The user is identified by their email address
# return self.email
#
# #On python 2: def __unicode__(self):
# def __str__(self):
# return self.email
#
# def has_perm(self, perm, obj=None):
# "Does the user have a specific permission?"
# # Simplest possible answer: Yes, always
# return True
#
# def has_module_perms(self, app_label):
# "Does the user have permissions to view the app `app_label`?"
# # Simplest possible answer: Yes, always
# return True
#
# @property
# def is_staff(self):
# "Is the user a member of staff?"
# # Simplest possible answer: All admins are staff
# return self.is_admin
#admin.py
# class UserCreationForm(forms.ModelForm):
# password1 = forms.CharField(label=‘Password‘, widget=forms.PasswordInput)
# password2 = forms.CharField(label=‘Password confirmation‘, widget=forms.PasswordInput)
#
# class Meta:
# model = MyUser
# fields = (‘email‘, ‘mobile‘)
#
# def clean_password2(self):
# # Check that the two password entries match
# password1 = self.cleaned_data.get("password1")
# password2 = self.cleaned_data.get("password2")
# if password1 and password2 and password1 != password2:
# raise forms.ValidationError("Passwords don‘t match")
# return password2
#
# def save(self, commit=True):
# # Save the provided password in hashed format
# user = super(UserCreationForm, self).save(commit=False)
# user.set_password(self.cleaned_data["password1"])
# if commit:
# user.save()
# return user
#
#
# class UserChangeForm(forms.ModelForm):
# password = ReadOnlyPasswordHashField()
#
# class Meta:
# model = MyUser
# fields = (‘email‘, ‘password‘, ‘mobile‘, ‘is_active‘, ‘is_admin‘)
#
# def clean_password(self):
# return self.initial[‘password‘]
#
# class UserAdmin(BaseUserAdmin):
# form = UserChangeForm
# add_form = UserCreationForm
# list_display = (‘email‘, ‘mobile‘,‘is_admin‘)
# list_filter = (‘is_admin‘,)
# fieldsets = (
# (None, {‘fields‘: (‘email‘, ‘password‘)}),
# (‘Personal info‘, {‘fields‘: (‘mobile‘,)}),
# (‘Permissions‘, {‘fields‘: (‘is_admin‘,)}),
# )
# add_fieldsets = (
# (None, {
# ‘classes‘: (‘wide‘,),
# ‘fields‘ :(‘email‘,‘mobile‘, ‘password1‘, ‘password2‘)}
# ),
# )
# search_fields = (‘email‘,)
# ordering = (‘email‘,)
# filter_horizontal = ()
#
# admin.site.register(MyUser,UserAdmin)
# admin.site.unregister(Group)三、profile方式扩展，但是从django1.6开始就放弃这种写法
四、网上找的方法，不改源码、不加新表，扩展user
from django.db import models from django.contrib.auth.models import User from django.contrib.auth.admin import UserAdmin import datetime class ProfileBase(type):
def __new__(cls, name, bases, attrs): #构造器，（名字，基类，类属性）
module = attrs.pop(‘__module__‘)
parents = [b for b in bases if isinstance(b, ProfileBase)]
if parents:
fields = []
for obj_name, obj in attrs.items():
if isinstance(obj, models.Field): fields.append(obj_name)
User.add_to_class(obj_name, obj) ####最重要的步骤
UserAdmin.fieldsets = list(UserAdmin.fieldsets)
UserAdmin.fieldsets.append((name, {‘fields‘: fields}))
return super(ProfileBase, cls).__new__(cls, name, bases, attrs) class ProfileUser(object):
__metaclass__ = ProfileBase class ExtraInfo(ProfileUser):
phone_number= models.CharField(max_length = 20, verbose_name=u‘电话号码‘)
稍微解释一下这段代码： ProfileBase是自定义的一个元类，继承自types.ClassType，其中ProfileUser为一个基类，其元类为ProfileBase，而ExtraInfo才是我们真正自定义字段的类，之所以把基类ProfileUser和ExtraInfo分开，是为了便于在其他地方引用ProfileUser，进行自定义扩展。简单说来，当解释器看到你在定义一个ProfileUser类的子类，而ProfileUser类的元类是ProfileBase，所以ExtraInfo的元类也是ProfileBase，在定义ProfileUser的子类的时候，它就会执行元类ProfileBase中的new中代码，并且将正在定义的类的（名字，基类，类属性）作为参数传递给new，这里的name就是类名ExtraInfo，attrs中则包含你新加的字段，通过User.add_to_class把新的字段加入到User中，为了能在admin中显示出来，把它加入到UserAdmin.fieldsets中，这样就能在后台编辑这个这个字段，当然，你也可以加入到ist_display，使之在列表中显示。
如果你有其他app也想往User Model中加field或方法，都只要通过子类ProfileUser类，然后使用声明语法进行定义即可，所有其他工作都有元类帮你完成。这也是所有django的model的内部工作，你可以用此方法扩展任何model。
转载出处：http://www.opscoder.info/extend_user.html
需求
注册登录都有现成的代码，主要是自带的User字段只有（email,username,password）,所以需要扩展User,来增加自己需要的字段
代码如下：
model.py
#coding:utf8
from django.db import models
from django.contrib.auth.models import AbstractUser
from django.utils.encoding import python_2_unicode_compatible
# Create your models here.
@python_2_unicode_compatible
"""是django内置的兼容python2和python3的unicode语法的一个装饰器
只是针对 __str__ 方法而用的，__str__方法是为了后台管理(admin)和django shell的显示，Meta类也是为后台显示服务的
"""
class MyUser(AbstractUser):
qq = models.CharField(u‘qq号‘, max_length=16)
weChat =models.CharField(u‘微信账号‘, max_length=100)
mobile =models.CharField(u‘手机号‘, primary_key=True, max_length=11)
identicard =models.BooleanField(u‘×××认证‘, default=False) #默认是0，未认证， 1：×××认证， 2：视频认证
refuserid = models.CharField(u‘推荐人ID‘, max_length=20)
Level = models.CharField(u‘用户等级‘, default=‘0‘, max_length=2) #默认是0，用户等级0-9
vevideo = models.BooleanField(u‘视频认证‘, default=False) #默认是0，未认证。 1：已认证
Type =models.CharField(u‘用户类型‘, default=‘0‘, max_length=1) #默认是0，未认证， 1：刷手 2：商家
def __str__(self):
return self.username
settings.py
AUTH_USER_MODEL = ‘appname.MyUser‘
AUTHENTICATION_BACKENDS = (‘django.contrib.auth.backends.ModelBackend‘,)踩过的坑：
1、扩展user表后，要在settings.py 添加
AUTH_USER_MODEL = ‘appname.扩展user的class name‘2、认证后台要在settings添加，尤其记得加逗号，否则报错
认证后台不加的报错
Django-AttributeError ‘User‘ object has no attribute ‘backend‘没加逗号的报错
ImportError: a doesn‘t look like a module path
form.py
#coding:utf-8
from django import forms
#注册表单
class RegisterForm(forms.Form):
username = forms.CharField(label=‘用户名‘,max_length=100)
password = forms.CharField(label=‘密码‘,widget=forms.PasswordInput())
password2 = forms.CharField(label=‘确认密码‘,widget=forms.PasswordInput())
mobile = forms.CharField(label=‘手机号‘, max_length=11)
email = forms.EmailField()
qq = forms.CharField(label=‘QQ号‘, max_length=16)
type = forms.ChoiceField(label=‘注册类型‘, choices=((‘buyer‘,‘买家‘),(‘saler‘,‘商家‘)))
def clean(self):
if not self.is_valid():
raise forms.ValidationError(‘所有项都为必填项‘)
elif self.cleaned_data[‘password2‘] != self.cleaned_data[‘password‘]:
raise forms.ValidationError(‘两次输入密码不一致‘)
else:
cleaned_data = super(RegisterForm, self).clean()
return cleaned_data
#登陆表单
class LoginForm(forms.Form):
username = forms.CharField(label=‘用户名‘,widget=forms.TextInput(attrs={"placeholder": "用户名", "required": "required",}),
max_length=50, error_messages={"required": "username不能为空",})
password = forms.CharField(label=‘密码‘,widget=forms.PasswordInput(attrs={"placeholder": "密码", "required": "required",}),
max_length=20, error_messages={"required": "password不能为空",})
views.py
from django.shortcuts import render,render_to_response
from .models import MyUser
from django.http import HttpResponse,HttpResponseRedirect
from django.template import RequestContext
import time
from .myclass import form
from django.template import RequestContext
from django.contrib.auth import authenticate,login,logout
#注册
def register(request):
error = []
# if request.method == ‘GET‘:
# return render_to_response(‘register.html‘,{‘uf‘:uf})
if request.method == ‘POST‘:
uf = form.RegisterForm(request.POST)
if uf.is_valid():
username = uf.cleaned_data[‘username‘]
password = uf.cleaned_data[‘password‘]
password2 = uf.cleaned_data[‘password2‘]
qq = uf.cleaned_data[‘qq‘]
email = uf.cleaned_data[‘email‘]
mobile = uf.cleaned_data[‘mobile‘]
type = uf.cleaned_data[‘type‘]
if not MyUser.objects.all().filter(username=username):
user = MyUser()
user.username = username
user.set_password(password)
user.qq = qq
user.email = email
user.mobile = mobile
user.type = type
user.save()
return render_to_response(‘member.html‘, {‘username‘: username})
else:
uf = form.RegisterForm()
return render_to_response(‘register.html‘,{‘uf‘:uf,‘error‘:error})
#登陆
def do_login(request):
if request.method ==‘POST‘:
lf = form.LoginForm(request.POST)
if lf.is_valid():
username = lf.cleaned_data[‘username‘]
password = lf.cleaned_data[‘password‘]
user = authenticate(username=username, password=password) #django自带auth验证用户名密码
if user is not None: #判断用户是否存在
if user.is_active: #判断用户是否激活
login(request,user) #用户信息验证成功后把登陆信息写入session
return render_to_response("member.html", {‘username‘:username})
else:
return render_to_response(‘disable.html‘,{‘username‘:username})
else:
return HttpResponse("无效的用户名或者密码!!!")
else:
lf = form.LoginForm()
return render_to_response(‘index.html‘,{‘lf‘:lf})
#退出