rest-framework-权限组件

一 权限简介

只用超级用户才能访问指定的数据，普通用户不能访问，所以就要有权限组件对其限制

二 局部使用

from rest_framework.permissions import BasePermission
class UserPermission(BasePermission):message = '不是超级用户，查看不了'def has_permission(self, request, view):# user_type = request.user.get_user_type_display()# if user_type == '超级用户':user_type = request.user.user_typeprint(user_type)if user_type == 1:return Trueelse:return False
class Course(APIView):authentication_classes = [TokenAuth, ]permission_classes = [UserPermission,]def get(self, request):return HttpResponse('get')def post(self, request):return HttpResponse('post')

局部使用只需要在视图类里加入：

permission_classes = [UserPermission,]

三 全局使用

REST_FRAMEWORK={"DEFAULT_AUTHENTICATION_CLASSES":["app01.service.auth.Authentication",],"DEFAULT_PERMISSION_CLASSES":["app01.service.permissions.SVIPPermission",]
}

四 源码分析

def check_permissions(self, request):for permission in self.get_permissions():if not permission.has_permission(request, self):self.permission_denied(request, message=getattr(permission, 'message', None))

self.get_permissions()

def get_permissions(self):return [permission() for permission in self.permission_classes]

权限类使用顺序：先用视图类中的权限类，再用settings里配置的权限类，最后用默认的权限类