如何使用OAUTH使用500PX API登录用户

from django.contrib.auth.models import User
from django.contrib import admin
from rest_framework import permissions, viewsets, generics, status
from rest_framework.response import Response
from rest_framework.exceptions import ValidationError
from .models import Profile
from .serializers import ProfileSerializer
from .permissions import IsAuthenticated
from .oauth2_backends import OAuth2Authentication

class ProfileViewSet(viewsets.ModelViewSet):
    queryset = Profile.objects.all()
    serializer_class = ProfileSerializer
    permission_classes = [permissions.IsAuthenticated]

    def perform_create(self, serializer):
        serializer.save(user=self.request.user)

class OAuth2Callback(generics.GenericAPIView):
    authentication_classes = [OAuth2Authentication]
    permission_classes = [permissions.IsAuthenticated]

    def get(self, request):
        # Handle the OAuth2 callback
        # ...
        return Response({'status': 'success'})