REST-framework之权限组件
REST-framework之权限组件
一 权限简介
例如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_type
print(user_type)
if user_type == 1:
return True
else:
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