function _get_quiz_top_scorers_chart in Quiz 8.6

Same name and namespace in other branches

1. 8.4 modules/quiz_stats/quiz_stats.admin.inc \_get_quiz_top_scorers_chart()
2. 8.5 modules/quiz_stats/quiz_stats.admin.inc \_get_quiz_top_scorers_chart()
3. 6.6 includes/quiz_dashboard/quiz_dashboard.admin.inc \_get_quiz_top_scorers_chart()
4. 6.4 includes/quiz_stats/quiz_stats.admin.inc \_get_quiz_top_scorers_chart()
5. 7.6 modules/quiz_stats/quiz_stats.admin.inc \_get_quiz_top_scorers_chart()
6. 7 includes/quiz_stats/quiz_stats.admin.inc \_get_quiz_top_scorers_chart()
7. 7.4 includes/quiz_stats/quiz_stats.admin.inc \_get_quiz_top_scorers_chart()
8. 7.5 modules/quiz_stats/quiz_stats.admin.inc \_get_quiz_top_scorers_chart()
9. 6.x modules/quiz_stats/quiz_stats.admin.inc \_get_quiz_top_scorers_chart()

Generates the top scorers chart.

Parameters

int $vid: Revision id of quiz node.

int $uid: An optional user ID. If supplied, only quizzes created by that user will be returned.

Return value

array|false Array with chart and metadata, FALSE if no quiz was found.

1 call to _get_quiz_top_scorers_chart()

quiz_stats_get_adv_stats in modules/quiz_stats/quiz_stats.admin.inc

Get stats for a single quiz. Maybe also for a single user.

File

modules/quiz_stats/quiz_stats.admin.inc, line 139

Administration file for Quiz stats Module.

Code

function _get_quiz_top_scorers_chart($vid, $uid = 0) {
  $top_scorers = array();
  $query = db_select('quiz_node_results', 'qnr');
  $query
    ->leftJoin('users', 'u', 'u.uid = qnr.uid');
  $query
    ->fields('qnr', array(
    'score',
  ));
  $query
    ->fields('u', array(
    'name',
  ));
  $query
    ->condition('qnr.vid', $vid);
  $query
    ->condition('qnr.is_invalid', 0);
  if ($uid != 0) {
    $query
      ->condition('qnr.uid', $uid);
  }
  $query
    ->orderBy('score', 'DESC');
  $query
    ->range(0, 10);
  $results = $query
    ->execute();
  while ($result = $results
    ->fetchAssoc()) {
    $key = $result['name'] . '-' . $result['score'];
    $top_scorers[$key] = $result;
  }
  if (count($top_scorers) == 0) {
    return FALSE;
  }

  // Return the chart with some meta data.
  $chart = '<div id="quiz_top_scorers" class="quiz-stats-chart-space">';
  $chart .= theme('quiz_top_scorers', array(
    'scorer' => $top_scorers,
  ));
  $chart .= '</div>';
  return array(
    'chart' => $chart,
    'title' => t('Top scorers'),
    'explanation' => t('This chart shows which quiz takers have the highest scores.'),
  );
}