def poll_vote(poll_id):
poll = Poll.get_poll_by_id(poll_id)
if not poll:
return abort(404)
choice_id = request.form['choice_id']
choice = Choice.get_by_id_for_poll(poll, choice_id)
if not choice:
return abort(404)
choice.cast_vote()
return redirect(url_for('poll', poll_id=poll.id))
