def start_auth(request):
"""
Step 1 of oauth authentication: get the REQUEST_TOKEN
"""
# Redirect to KA, for auth. They will return to central, and we'll be able to continue
# using data from the session
central_callback_url = request.build_absolute_uri(reverse('update_all_central_callback'))
client = TestOAuthClient(KHAN_SERVER_URL, settings.KHAN_API_CONSUMER_KEY, settings.KHAN_API_CONSUMER_SECRET)
return HttpResponseRedirect(client.start_fetch_request_token(central_callback_url))
