How to identify how many users have chosen an option in multiple choice answer type questions?

Posted by bangalos on May 27, 2010 at 10:55pm

I would like to show the quiz-taker how many people chose a particular option after each question. This presents me with 2 difficulties

How to compute what percentage of users chose which answer choice.
How to add an "in-between" page where only this information is displayed? I am trying to recreate the quiz functionality seen on http://www.lifescript.com/Quizzes/Astrology/Are_You_True_To_Your_Zodiac_... where, after you answer the question, immediately you are presented with the information "You Said ... Others Said ..."?
Also I would like to present to user how many people have "taken" a quiz. How can I compute that?

Thanks much.
- Srikanth.

Comments

Figured out how to add "in-between" page to a form.

Posted by bangalos on June 1, 2010 at 11:08pm

Basically, I created a new module (called it quiz_sri) and added the following code. The key was to use form_alter to grab current state, store it in SESSION variable and use drupal_goto to go to my own custom form. In this custom form, I added another drupal_goto to go back to quiz_taking form. The rest of the logic is to avoid calling form_alter when the second goto happens.

  function quiz_sri_form_quiz_question_answering_form_alter(&$form, &$form_state) {
    if($_SESSION['beenhere']) {
      if($_SESSION['showpage1']) {
        $_SESSION['showpage1'] = false;
      } else {
        $_SESSION['showpage1'] = true;
        if (arg(0) == 'node' && is_numeric(arg(1))) $nodeid = arg(1);
        $_SESSION['save_destination'] = $nodeid;
        $_SESSION['save_question'] = $form['question'];
        drupal_goto("quiz_sri/taking");
      }
    } else {
      $_SESSION['beenhere'] = true;
      return;
    }
 }
 function quiz_sri_menu() {
  $items = array();
  $items['quiz_sri/taking'] = array(
    'title' => t('My form'),
    'page callback' => 'quiz_sri_form',
    'access arguments' => array('access content'),
    'description' => t('My form'),
    'type' => MENU_CALLBACK,
  );
  return $items;
}

 function quiz_sri_form() {
   return drupal_get_form('quiz_sri_my_form');
 }

 function quiz_sri_my_form($form_state) {
  $form['question'] = $_SESSION['save_question'];
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => 'Submit',
  );
  return $form;
}

// Adds a submit handler/function to our form to send a successful
// completion message to the screen.

function quiz_sri_my_form_submit($form, &$form_state) {
    drupal_set_message(t('The form has been submitted.'));
    $_SESSION['showpage1'] = true;
    drupal_goto('/node/' . $_SESSION['save_destination'] . '/take');
}