POST method always return 403 Forbidden

I have read Django - CSRF verification failed and several questions (and answers) related to django and POST method. One of the best-but-not-working-for-me answer is https://stackoverflow.com/a/4707639/755319 All of the approved answers suggest at least 3 things: - Use RequestContext as the third parameter of render_to_response_call - Add {% csrf_token %} in every form with POST method - Check the MIDDLEWARE_CLASSES in settings.py I've done exactly as suggested, but the error still appeared. I use django 1.3.1 (from ubuntu 12.04 repository) and python 2.7 (default from ubuntu) This is my View: ``` # Create your views here. from django.template import RequestContext from django.http import HttpResponse from django.shortcuts import render_to_response from models import BookModel def index(request): return HttpResponse('Welcome to the library') def search_form(request): return render_to_response('library/search_form.html') def search(request): if request.method=='POST': if 'q' in request.POST: q=request.POST['q'] bookModel = BookModel.objects.filter(title__icontains=q) result = {'books' : bookModel,} return render_to_response('library/search.html', result, context_instance=RequestContext(request)) else: return search_form(request) else: return search_form(request) ``` and this is my template (search_form.html): ``` {% extends "base.html" %} {% block content %} <form action="/library/search/" method="post"> {% csrf_token %} <input type="text" name="q"> <input type="submit" value="Search"> </form> {% endblock %} ``` I've restarted the server, but the 403 forbidden error is still there, telling that CSRF verification failed. I've 2 questions: - How to fix this error? - Why is it so hard to make a "POST" in django, I mean is there any specific reason to make it so verbose (I come from PHP, and never found such a problem before)?