Passing entire object as parameter, instead of his id

views.py

from models import Post, Comment
from django.shortcuts import render

def posts(request):
	posts = Post.objects.all()
	return render(request, 'blog/posts.html', locals())

def post(request, id):
	posts = Post.objects.all()
	post = Post.objects.get(id=id) #Aqui eu tenho o objeto post, com todos os seus atributos
	comments = Comment.objects.filter(post = post, approved = True)
	
	teve_comentario = False
	if request.method == 'POST':
		teve_comentario = True
		comment = Comment()
		comment.post = post #Porque aqui eu passo tudo ao invés de só o id?
		comment.name = request.POST['nome']
		comment.email = request.POST['email']
		comment.comment = request.POST['comentario']
		comment.save()
		
	return render(request, 'blog/post.html', locals())