From c17f91905aeabff6a272f5ceb9d7e7c81d45e9bf Mon Sep 17 00:00:00 2001
From: gustav_delius <gustav_delius>
Date: Sat, 4 Jun 2005 08:55:37 +0000
Subject: [PATCH] put back the overview report folder

---
 mod/quiz/report/overview/report.php | 337 ++++++++++++++++++++++++++++
 1 file changed, 337 insertions(+)
 create mode 100644 mod/quiz/report/overview/report.php

diff --git a/mod/quiz/report/overview/report.php b/mod/quiz/report/overview/report.php
new file mode 100644
index 00000000000..c2b28bd3091
--- /dev/null
+++ b/mod/quiz/report/overview/report.php
@@ -0,0 +1,337 @@
+<?php  // $Id$
+
+// This script lists student attempts
+
+    require_once($CFG->libdir.'/tablelib.php');
+
+class quiz_report extends quiz_default_report {
+
+    function display($quiz, $cm, $course) {     /// This function just displays the report
+        global $CFG, $SESSION, $db, $QUIZ_QTYPES;
+
+    /// Define some strings
+        $strreallydel  = addslashes(get_string('deleteattemptcheck','quiz'));
+        $strnoattempts = get_string('noattempts','quiz');
+        $strtimeformat = get_string('strftimedatetime');
+        $strreviewquestion = get_string('reviewresponse', 'quiz');
+
+    /// Print header
+        $this->print_header_and_tabs($cm, $course, $quiz, $reportmode="overview");
+
+    /// Deal with actions
+    
+        $action = optional_param('action', '');
+    
+        switch($action) {
+            case 'delete':  /// Some attempts need to be deleted
+                // the following needs to be improved to delete all associated data as well
+    
+                $attemptids = isset($_POST['attemptid']) ? $_POST['attemptid'] : array();
+                if(!is_array($attemptids) || empty($attemptids)) {
+                    break;
+                }
+    
+                foreach($attemptids as $num => $attemptid) {
+                    if(empty($attemptid)) {
+                        unset($attemptids[$num]);
+                    }
+                }
+    
+                foreach($attemptids as $attemptid) {
+                    if ($todelete = get_record('quiz_attempts', 'id', $attemptid)) {
+    
+                        delete_records('quiz_attempts', 'id', $attemptid);
+                        delete_records('quiz_states', 'attempt', $attemptid);
+    
+                        // Search quiz_attempts for other instances by this user.
+                        // If none, then delete record for this quiz, this user from quiz_grades
+                        // else recalculate best grade
+    
+                        $userid = $todelete->userid;
+                        if (!record_exists('quiz_attempts', 'userid', $userid, 'quiz', $quiz->id)) {
+                            delete_records('quiz_grades', 'userid', $userid,'quiz', $quiz->id);
+                        } else {
+                            quiz_save_best_grade($quiz, $userid);
+                        }
+                    }
+                }
+            break;
+        }
+    
+    /// Check to see if groups are being used in this quiz
+        if ($groupmode = groupmode($course, $cm)) {   // Groups are being used
+            $currentgroup = setup_and_print_groups($course, $groupmode, "report.php?id=$cm->id&amp;mode=overview");
+        } else {
+            $currentgroup = false;
+        }
+    
+    /// Get all students
+        if ($currentgroup) {
+            $users = get_group_students($currentgroup);
+        }
+        else {
+            $users = get_course_students($course->id);
+        }
+    
+    if($users === false) {
+        $users = array();
+    }
+    else {
+        $users = array_keys($users);
+    }
+
+/// Now the tricky part: if there are people with attempts but they have been unenrolled
+/// since making those attempts, count them in as well. DO NOT count course teachers.
+
+    $userswithattempts = get_records_sql('SELECT DISTINCT qa.userid AS id, qa.userid FROM '.$CFG->prefix.'quiz_attempts qa LEFT JOIN '.$CFG->prefix.'user_teachers ut ON qa.userid = ut.userid AND ut.course = '.$course->id.' WHERE ut.id IS NULL AND quiz = '.$quiz->id);
+    if(!empty($userswithattempts)) {
+        $unenrolledusers = array_diff(array_keys($userswithattempts), $users);
+        $users = array_merge($users, $unenrolledusers);
+    }
+
+        if(empty($users)) {
+            print_heading($strnoattempts);
+            return true;
+        }
+    
+    /// Set table options
+        if(!isset($SESSION->quiz_overview_table)) {
+            $SESSION->quiz_overview_table = array('noattempts' => false, 'detailedmarks' => false);
+        }
+    
+        foreach($SESSION->quiz_overview_table as $option => $value) {
+            $urlparam = optional_param($option, NULL);
+            if($urlparam === NULL) {
+                $$option = $value;
+            }
+            else {
+                $$option = $SESSION->quiz_overview_table[$option] = $urlparam;
+            }
+        }
+    
+    /// Print display options
+    
+        echo '<div class="controls">';
+        echo '<form method="post" action="report.php">';
+        echo '<p>'.get_string('displayoptions', 'quiz').': ';
+        echo '<input type="hidden" name="id" value="'.$cm->id.'" />';
+        echo '<input type="hidden" name="mode" value="overview" />';
+        echo '<input type="hidden" name="noattempts" value="0" />';
+        echo '<input type="hidden" name="detailedmarks" value="0" />';
+        echo '<input type="checkbox" id="checknoattempts" name="noattempts" '.($noattempts?'checked="checked" ':'').'value="1" /> <label for="checknoattempts">'.get_string('shownoattempts', 'quiz').'</label> ';
+        echo '<input type="checkbox" id="checkdetailedmarks" name="detailedmarks" '.($detailedmarks?'checked="checked" ':'').'value="1" /> <label for="checkdetailedmarks">'.get_string('showdetailedmarks', 'quiz').'</label> ';
+        echo '<input type="submit" value="'.get_string('go').'" />';
+        echo '</p>';
+        echo '</form>';
+        echo '</div>';
+    
+    /// 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/report.php?mode=overview&amp;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 ';
+        $from   = 'FROM '.$CFG->prefix.'user u LEFT JOIN '.$CFG->prefix.'quiz_attempts qa ON (u.id = qa.userid AND qa.quiz = '.$quiz->id.') ';
+    $where  = 'WHERE u.id IN ('.implode(',', $users).') ';
+    
+        // Add extra limits if we 're not interested in students without attempts
+        if(!$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 ';
+                        $from        .= 'LEFT JOIN '.$CFG->prefix.'quiz_newest_states qns ON qns.attemptid = qa.id '.
+                                        'LEFT JOIN '.$CFG->prefix.'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, $attempt->picture, false, true);
+    
+            if(in_array($attempt->userid, $unenrolledusers)) {
+                $userlink = '<a class="dimmed" href="'.$CFG->wwwroot.'/user/view.php?id='.$attempt->userid.'&amp;course='.$course->id.'">'.fullname($attempt).'</a>';
+            }
+            else {
+                $userlink = '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$attempt->userid.'&amp;course='.$course->id.'">'.fullname($attempt).'</a>';
+            }
+
+                $row = array(
+                          '<input type="checkbox" name="attemptid[]" value="'.$attempt->attempt.'" />',
+                          $picture,
+                          $userlink,
+                          empty($attempt->attempt) ? '-' : '<a href="review.php?q='.$quiz->id.'&amp;attempt='.$attempt->attempt.'">'.userdate($attempt->timestart, $strtimeformat).'</a>',
+                          empty($attempt->attempt) ? '-' :
+                           (empty($attempt->timefinish) ? get_string('unfinished', 'quiz') :
+                            format_time($attempt->duration))
+                       );
+    
+                if ($quiz->grade) {
+                    $row[] = $attempt->sumgrades === NULL ? '-' : '<a href="review.php?q='.$quiz->id.'&amp;attempt='.$attempt->attempt.'">'.round($attempt->sumgrades / $quiz->sumgrades * $quiz->grade,$quiz->decimalpoints).'</a>';
+                }
+    
+                if($detailedmarks) {
+                    if(empty($attempt->attempt)) {
+                        foreach($questionids as $questionid) {
+                            $row[] = '-';
+                        }
+                    }
+                    else {
+                        foreach($questionids as $questionid) {
+                            if ($gradedstateid = get_field('quiz_newest_states', 'newgraded', 'attemptid', $attempt->attempt, 'questionid', $questionid)) {
+                                $grade = round(get_field('quiz_states', 'grade', 'id', $gradedstateid), $quiz->decimalpoints);
+                            } else { 
+                                // This is an old-style attempt
+                                $grade = round(get_field('quiz_states', 'grade', 'attempt', $attempt->attempt, 'question', $questionid), $quiz->decimalpoints);
+                            }
+                            $row[] = link_to_popup_window ('/mod/quiz/reviewquestion.php?state='.$gradedstateid.'&amp;number='.$questions[$questionid]->number, 'reviewquestion', $grade, 450, 650, $strreviewquestion, 'none', true);
+                        }
+                    }
+                }
+    
+                $table->add_data($row);
+            }
+    
+    /// Start form
+    
+            echo '<div id="tablecontainer">';
+            echo '<form id="attemptsform" method="post" action="report.php" onsubmit="var menu = document.getElementById(\'actionmenu\'); return (menu.options[menu.selectedIndex].value == \'delete\' ? \''.$strreallydel.'\' : true);">';
+            echo '<input type="hidden" name="id" value="'.$cm->id.'" />';
+            echo '<input type="hidden" name="mode" value="overview" />';
+    
+    /// Print table
+    
+            $table->print_html();
+    
+    /// Print "Select all" etc.
+    
+            echo '<table id="commands">';
+            echo '<tr><td>';
+            echo '<a href="javascript:select_all_in(\'DIV\', null, \'tablecontainer\');">'.get_string('selectall', 'quiz').'</a> / ';
+            echo '<a href="javascript:deselect_all_in(\'DIV\', null, \'tablecontainer\');">'.get_string('selectnone', 'quiz').'</a> ';
+            echo '&nbsp;&nbsp;';
+            $options = array('delete' => get_string('delete'));
+            $menu = str_replace('<select', '<select id="actionmenu"', choose_from_menu($options, 'action', '', get_string('withselected', 'quiz'), 'if(this.selectedIndex > 0) submitFormById(\'attemptsform\');', '', true));
+            echo $menu;
+            echo '<noscript id="noscriptactionmenu" style="display: inline;">';
+            echo '<input type="submit" value="'.get_string('go').'" /></noscript>';
+            echo '<script type="text/javascript">'."\n<!--\n".'document.getElementById("noscriptactionmenu").style.display = "none";'."\n-->\n".'</script>';
+            echo '</td></tr></table>';
+    
+    /// Close form
+            echo '</form></div>';
+        }
+        else {
+            $table->print_html();
+        }
+        return true;
+    }
+}
+
+?>