视图函数中加上认证功能,流程见下图 import hashlib import time def get_random(name): md = hashlib.md5() md.update(bytes(str(time.time()),encoding='utf-8')) md.update(bytes(name,encoding='utf-8')) return md.hexdigest() from rest_framework.views import APIView class Login(APIView): authentication_classes = [AuthLogin] def post(self, request, *args, **kwargs): response = {'status': 100, 'msg': None} name = request.data.get('name') pwd = request.data.get('pwd') user = models.User.objects.filter(name=name, password=pwd).first() if user: response['msg'] = '登陆成功' # 随机字符串可以是用户名加当前时间生成的mds token = get_random(name) # 如果有记录,就只需要更新,不需要重新插入 # models.UserToken.objects.create(token=token,user=user) # 查询 更新 # user_agent models.UserToken.objects.update_or_create(user=user, defaults={'token': token}) response['token'] = token else: response['status'] = 101 response['msg'] = '用户名或密码错误' return Response(response) from rest_framework.permissions import BasePermission from rest_framework.exceptions import NotAuthenticated from app01 import models # BaseAuthentication class AuthLogin(BaseAuthentication): def authenticate(self, request): # 封装后的request token = request.GET.get('token') # print(token) ret = models.UserToken.objects.filter(token=token).first() if ret: return ret.user,token else: raise NotAuthenticated('您没有登陆')
在def initial(self, request, *args, **kwargs):函数中找到认证功能
dispatch 方法里self.initial里面有个认证组件self.perform_authentication(request)
到了APIview 返回了request.user (封装后的Request)
去request类里找user方法,被包装成了属性,里面执行了一个方法,self._authticate方法
self._authticate方法里从自己的authenticators一个一个的取东西,authenticators
于是查看authenticators,是初始化的时候init传过来了,self.authenticators = authenticators or()
到dispatch里找初始化的时候,也就是APIView的initialize_request方法传了self.authenticators,里面是一个get_authenticators的方法
self.authentication_classes 是[类1,类2,类3]一个一个取,加括号执行。生成一个一个对象.最后返回到前面的Request的_authenticate方法
拿到对象之后,执行user_auth_tuple = authenticator.authenticate(self)
注意authenticate是需要在视图函数中自己定义的,self.user, self.auth = user_auth_tuple返回两个值,流程结束。