';
/// Define table columns
$tablecolumns = array('checkbox', 'picture', 'fullname', 'timestart', 'duration');
$tableheaders = array(NULL, '', get_string('fullname'), get_string('startedon', 'quiz'), get_string('attemptduration', 'quiz'));
if ($quiz->grade) {
$tablecolumns[] = 'sumgrades';
$tableheaders[] = get_string('grade', 'quiz').'/'.$quiz->grade;
}
if($detailedmarks) {
// we want to display marks for all questions
// Start by getting all questions
$questionlist = quiz_questions_in_quiz($quiz->questions);
$questionids = explode(',', $questionlist);
$sql = "SELECT q.*, i.grade AS maxgrade, i.id AS instance".
" FROM {$CFG->prefix}quiz_questions q,".
" {$CFG->prefix}quiz_question_instances i".
" WHERE i.quiz = '$quiz->id' AND q.id = i.question".
" AND q.id IN ($questionlist)";
if (!$questions = get_records_sql($sql)) {
error('No questions found');
}
$number = 1;
foreach($questionids as $key => $id) {
if ($questions[$id]->length) {
// Only print questions of non-zero length
$tablecolumns[] = '$'.$id;
$tableheaders[] = '#'.$number;
$questions[$id]->number = $number;
$number += $questions[$id]->length;
} else {
// get rid of zero length questions
unset($questions[$id]);
unset($questionids[$key]);
}
}
}
/// Set up the table
$table = new flexible_table('mod-quiz-report-overview-report');
$table->define_columns($tablecolumns);
$table->define_headers($tableheaders);
$table->define_baseurl($CFG->wwwroot.'/mod/quiz/attempts.php?id='.$cm->id);
$table->sortable(true);
$table->collapsible(true);
$table->initialbars(count($users)>20);
$table->column_suppress('picture');
$table->column_suppress('fullname');
$table->column_class('picture', 'picture');
$table->set_attribute('cellspacing', '0');
$table->set_attribute('id', 'attempts');
$table->set_attribute('class', 'generaltable generalbox');
// Start working -- this is necessary as soon as the niceties are over
$table->setup();
// Construct the SQL
$select = 'SELECT '.$db->Concat('u.id', '\'#\'', $db->IfNull('qa.attempt', '0')).' AS uniqueid, qa.id AS attempt, u.id AS userid, u.firstname, u.lastname, u.picture, '.
'qa.sumgrades, qa.timefinish, qa.timestart, qa.timefinish - qa.timestart AS duration ';
$from = 'FROM mdl_user u LEFT JOIN mdl_quiz_attempts qa ON (u.id = qa.userid AND qa.quiz = '.$quiz->id.') ';
$where = 'WHERE u.id IN ('.implode(',', array_keys($users)).') ';
// Add extra limits if we 're not interested in students without attempts
if(!$noattempts) {
$where .= 'AND '.$db->IfNull('qa.attempt', '0').' != 0 ';
}
// Add extra limits due to initials bar
if($table->get_sql_where()) {
$where .= 'AND '.$table->get_sql_where();
}
// Count the records NOW, before funky question grade sorting messes up $from
$total = count_records_sql('SELECT COUNT(DISTINCT('.$db->Concat('u.id', '\'#\'', $db->IfNull('qa.attempt', '0')).')) '.$from.$where);
// Add extra limits due to sorting by question grade
if($sort = $table->get_sql_sort()) {
$sortparts = explode(',', $sort);
$newsort = array();
$questionsort = false;
foreach($sortparts as $sortpart) {
$sortpart = trim($sortpart);
if(substr($sortpart, 0, 1) == '$') {
if(!$questionsort) {
$qid = intval(substr($sortpart, 1));
$select .= ', grade ';
$from .= 'LEFT JOIN mdl_quiz_newest_states qns ON qns.attemptid = qa.id '.
'LEFT JOIN mdl_quiz_states qs ON qs.id = qns.newgraded ';
$where .= ' AND ('.sql_isnull('qns.questionid').' OR qns.questionid = '.$qid.')';
$newsort[] = 'grade '.(strpos($sortpart, 'ASC')? 'ASC' : 'DESC');
$questionsort = true;
}
}
else {
$newsort[] = $sortpart;
}
}
// Reconstruct the sort string
$sort = ' ORDER BY '.implode(', ', $newsort);
}
$table->pagesize(10, $total);
if($table->get_page_start() !== '' && $table->get_page_size() !== '') {
$limit = ' '.sql_paging_limit($table->get_page_start(), $table->get_page_size());
}
else {
$limit = '';
}
/// Fetch the attempts
$attempts = get_records_sql($select.$from.$where.$sort.$limit);
/// Build table rows
if(!empty($attempts)) {
foreach ($attempts as $attempt) {
$picture = print_user_picture($attempt->userid, $course->id, $attempt->picture, false, true);
$row = array(
'