一、用户认证装饰器：
使用装饰器，实现代码重用。
1、django自带的装饰器
# 一、自带的函数装饰器
from django.contrib.auth.decorators import login_required # 修饰函数
# 修改login_required默认的转向地址： 在Settings.py中添加LOGIN_URL = '转向地址'
@login_required
def index(request):
name = request.COOKIES.get('username') # 读取客户端的用户名
pw = request.COOKIES.get('userpw') # 读取客户端的密码
auth_name = 'root'
auth_pw = '123456'
return render(request, '/index/')
# 二、自带的类装饰器
from django.utils.decorators import method_decorator # Django的类中函数装饰
# ---------装饰到类中的函数-----------
class Index(View):
@method_decrator(auth)
def dispantch(self, request, *args, **kwargs):
return super(Index, self).dispatch(request, *args, **kwargs)
def get(self, request):
reuturn render(request, '/index/')
# ---------装饰到类-----------
@method_decrator(auth, name='dispatch') # auth：装饰器，name：装饰的类中的方法名
class Index(View):
def get(self, request):
reuturn render(request, '/index/')
2、CBV（Class Base Views）装饰器认证，使用类处理请求。
views.py
from django.http import HttpResponse
from django.views import View
# 方法一：类里面的所有方法都要加装饰
from django.utils.decorators import method_decorator # 导入Django装饰器
def auth(func):
def inner_func(request, *args, **kwargs):
name = request.COOKIES.get('username') # 读取客户端的用户名
pw = request.COOKIES.get('userpw') # 读取客户端的密码
auth_name = 'root'
auth_pw = '123456'
if name != auth_name and pw != auth_pw:
return redirect('/login/')
return inner_func
class Index(View):
@method_decorator(auth) # 进行装饰
def get(self, requet):
return render(request, 'login.html')
@method_decorator(auth)
def post(self, request):
return render(request, 'check.html')
# 方式二：类继承装饰器，代码重用度高
class Auth(View):
def dispatch(self, request, *args, **kwargs): # Auth继承View,向Dispatch添加了判断功能。
name = request.COOKIES.get('username') # 读取客户端的用户名
pw = request.COOKIES.get('userpw') # 读取客户端的密码
auth_name = 'root'
auth_pw = '123456'
if name != auth_name and pw != auth_pw:
return redirect('/login/')
return super(Auth, self).dispatch(self, request, *args, **kwargs)
class Index(Auth): # 继承Auth
def get(self, requet):
return render(request, 'index.html')
# 方式三：直接在类里面给dispatch添加功能,缺点是每个类都要重写
class Index(View): # 继承View
def dispatch(self, request, *args, **kwargs):
if not request.POST.get('username'):
return redirect('/login/')
return super(Index,self).dispatch(request, *args, **kwargs)
def get(self, requet):
return render(request, 'index.html')
3、FBV（Function Base Views）装饰器认证，使用函数处理请求。
from django.http import HttpResponse, redirect, render
def auth(func):
def inner_func(request, *args, **args):
name = request.COOKIES.get('username') # 读取客户端的用户名
pw = request.COOKIES.get('userpw') # 读取客户端的密码
auth_name = 'root'
auth_pw = '123456'
if name != auth_name and pw != auth_pw:
return redirect('/login/')
return inner_func
@auth
def index(request):
return render(request, 'index.html')
@auth
def details(request)
return render(request, 'details.html')