captcha-views.py

def login_page(request, template_name="login.html"):
    context = {'title': 'Login Page'}
    file_name, answer, _, result_id = generate_captcha()
    context['captcha_url'] = '/' + file_name
    context['ref_id'] = result_id
    return render_to_response(template_name, context)
  
def login_ajax(request):
 response = {'status': None}
if request.method == 'POST':
  data = json.loads(request.body)
  username, password, ans, ref_id = data['username'], data['password'], data['captcha-result'], data['captcha-ref-id']
actual_ans = retrieve_answer(ref_id)
if ans == actual_ans: #Captcha Verification Complete, move on to password verification
   user_exists = User.objects.filter(username=username)
if user_exists: #check password...
    user = user_exists[0]
    password_ok = user.check_password(password)
if password_ok: #ok move to logging in user
     django_login(request, user)
#just incase...
     response['status'] = 'ok'
    else: #password failed...
     response['status'] = 'failed'
file_name, ans, _, ref_id = generate_captcha()
     response['captcha-url'] = '/' + file_name
     response['ref-id'] = ref_id
     response['error-message'] = 'Wrong Username/Password Combination'
else: #no matching user found
    response['status'] = 'failed'
    file_name, ans, _, ref_id = generate_captcha()
    response['captcha-url'] = '/' + file_name
    response['ref-id'] = ref_id
    response['error-message'] = 'Wrong Username/Password Combination'
  else: #Captcha Verification Failed, return new Captcha and ID so user can try again
   response['status'] = 'failed'
   file_name, ans, _, ref_id = generate_captcha()
   response['captcha-url'] = '/' + file_name
   response['ref-id'] = ref_id
   response['error-message'] = 'Wrong Answer to Calculation'