redirectToAddedPost

# realpython.com course 2 chapter 27.14.7 homework
# django redirect to url of newly added blogpost 

def add_post(request):
    context = RequestContext(request)
    if request.method == 'POST':
        form = PostForm(request.POST, request.FILES)
        if form.is_valid():
            form.save(commit=True)

            single_post = Post.objects.all().order_by('-created_at')[:1][0]
            single_post.url = encode_url(single_post.title)

            # this works
            #return redirect('/blog/' + single_post.url)

            # this works also
            return redirect(post, post_url = single_post.url)
        else:
            print form.errors
    else:
        form = PostForm()

    return render_to_response('blog/add_post.html', {'form': form}, context)