For Luke.

why_render_to_response.py

from django.shortcuts import get_object_or_404, render_to_response
from django.template import RequestContext
from myapp.models import Note


def note_detail(request, slug):
    note = get_object_or_404(Note, slug=slug)
    editable = False
    
    if request.user.is_authenticated:
        if request.user.id == note.author.id:
            editable = True
    
    return render_to_response('myapp/note_detail.html', {
        'note': note,
        'editable': editable,
    }, context_instance=RequestContext(request))