views.py

from django.shortcuts import render, get_object_or_404, redirect
from .models import Post

def all_post(request):
  return render(request, 'index.html', {
    'posts': Post.objects.all()[:3]
  })

def post_detail(request, pk):
  return render(request, 'detail.html', {
    'post': get_object_or_404(Post, pk=id)
  })