это вью файл
from .serializers import PostSerializer
from rest_framework import viewsets

from .models import Post

class PostViewSet(viewsets.ModelViewSet):
    queryset = Post.objects.all()
    serializer_class = PostSerializer

 это сериалазер файл
from rest_framework import serializers
from .models import Post

class PostSerializer(serializers.ModelSerializer):
    class Meta:
        fields = ('id', 'text', 'author', 'image', 'pub_date')
        model = Post

Это головной урл
from django.contrib import admin
from django.urls import path, include
from posts.views import PostViewSet
from rest_framework.routers import DefaultRouter
router = DefaultRouter()
router.register('posts', PostViewSet)

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', include('posts.urls')),
    path('', include(router.urls)),
    path('api/v1/posts/', include(router.urls)),
    path('api/v1/posts/<int:pk>/', include(router.urls)),
]

это урл приложения posts
from django.urls import path, include
from posts.views import PostViewSet
from rest_framework.routers import DefaultRouter
router = DefaultRouter()
router.register('posts', PostViewSet)
router.register('posts', PostViewSet)

urlpatterns = [
    path('', include(router.urls)),
    path('api/v1/posts/', include(router.urls)),
    path('api/v1/posts/<int:pk>/', include(router.urls)),
]