django装饰器

1、CBV

　　1）、装饰类

from django.contrib.auth.decorators import login_required
from django.utils.decorators import method_decorator

from myadmin.permissions import check_permission

#name为被装饰的方法名
@method_decorator(login_required,name='dispatch')#或login_required(login_url = '/login/')
class LoginRequiredMixin(object):
    def dispatch(self,request,*args,**kwargs):
        return super(LoginRequiredMixin,self).dispatch(request,*args,**kwargs)

#以下两者等同；login_required()在check_permission()之前处理请求
@method_decorator([login_required,check_permission],name='dispatch')#或元组
class LoginRequiredMixin(object):
    def dispatch(self,request,*args,**kwargs):
        return super(LoginRequiredMixin,self).dispatch(request,*args,**kwargs)

@method_decorator(login_required,name='dispatch')
@method_decorator(check_permission,name='dispatch')
class LoginRequiredMixin(object):
    def dispatch(self,request,*args,**kwargs):
        return super(LoginRequiredMixin,self).dispatch(request,*args,**kwargs)

　　2）、装饰类方法

from django.contrib.auth.decorators import login_required
from django.utils.decorators import method_decorator

class LoginRequiredMixin(object):
    @method_decorator(login_required)
    def dispatch(self,request,*args,**kwargs):
        return super(LoginRequiredMixin,self).dispatch(request,*args,**kwargs)

2、FBV

　　login_required可以直接装饰函数，如果用户为登录默认跳转到settings.LOGIN_URL，如：LOGIN_URL = 'login'。

也可以通过login_url自定义。

　　login_required装饰器不会在用户上检查is_active标志，但默认的AUTHENTICATION_BACKENDS拒绝不活动的用户。