edit_post

views.py

def edit_post(request: HttpRequest, slug: str) -> HttpResponse:

    post = get_object_or_404(Post, slug=slug)

    form = PostForm(instance=post)

    if request.method == "POST":
        form = PostForm(request.POST, instance=post)
        if form.is_valid():
            post = form.save()
            return redirect("post_detail", slug=post.slug)

    context = {"form": form, "post": post, "edit_mode": True}
    return render(request, "post_form.html", context)