[moodle.git] / blocks / quiz_results / block_quiz_results.php

<?php //$Id$

define('B_QUIZRESULTS_NAME_FORMAT_FULL', 1);
define('B_QUIZRESULTS_NAME_FORMAT_ID',   2);
define('B_QUIZRESULTS_NAME_FORMAT_ANON', 3);
define('B_QUIZRESULTS_GRADE_FORMAT_PCT', 1);
define('B_QUIZRESULTS_GRADE_FORMAT_FRA', 2);
define('B_QUIZRESULTS_GRADE_FORMAT_ABS', 3);

class block_quiz_results extends block_base {
    function init() {
        $this->title = get_string('formaltitle', 'block_quiz_results');
        $this->version = 2007101509;
    }

    function applicable_formats() {
        return array('course' => true, 'mod-quiz' => true);
    }

    function get_content() {
        global $USER, $CFG, $DB;

        if ($this->content !== NULL) {
            return $this->content;
        }

        $this->content = new stdClass;
        $this->content->text = '';
        $this->content->footer = '';

        if (empty($this->instance)) {
            return $this->content;
        }

        if ($this->page->activityname == 'quiz') {
            $quiz = $this->page->activityrecord;
            $quizid = $quiz->id;
            $courseid = $this->page->course->id;
            $inquiz = true;
        } else if (!empty($this->config->quizid)) {
            $quizid = $this->config->quizid;
            $quiz = $DB->get_record('quiz', array('id' => $quizid));
            if (empty($quiz)) {
                $this->content->text = get_string('error_emptyquizrecord', 'block_quiz_results');
                return $this->content;
            }
            $courseid = $quiz->course;
            $inquiz = false;
        } else {
            $quizid = 0;
        }

        if (empty($quizid)) {
            $this->content->text = get_string('error_emptyquizid', 'block_quiz_results');
            return $this->content;
        }

        if (empty($this->config->showbest) && empty($this->config->showworst)) {
            $this->content->text = get_string('configuredtoshownothing', 'block_quiz_results');
            return $this->content;
        }

        // Get the grades for this quiz
        $grades = $DB->get_records('quiz_grades', array('quiz' => $quizid), 'grade, timemodified DESC');

        if (empty($grades)) {
            // No grades, sorry
            // The block will hide itself in this case
            return $this->content;
        }

        $groupmode = NOGROUPS;
        $best      = array();
        $worst     = array();

        if (!empty($this->config->nameformat)) {
            $nameformat = $this->config->nameformat;
        } else {
            $nameformat = B_QUIZRESULTS_NAME_FORMAT_FULL;
        }

        if (!empty($this->config->usegroups)) {
            if ($inquiz) {
                $cm = $this->page->cm;
                $context = $this->page->context;
            } else {
                $cm = get_coursemodule_from_instance('quiz', $quizid, $courseid);
                $context = get_context_instance(CONTEXT_MODULE, $cm->id);
            }
            $groupmode = groups_get_activity_groupmode($cm);

            if ($groupmode == SEPARATEGROUPS && has_capability('moodle/site:accessallgroups', $context)) {
                // We 'll make an exception in this case
                $groupmode = VISIBLEGROUPS;
            }
        }

        switch ($groupmode) {
            case VISIBLEGROUPS:
            // Display group-mode results
            $groups = groups_get_all_groups($courseid);

            if(empty($groups)) {
                // No groups exist, sorry
                $this->content->text = get_string('error_nogroupsexist', 'block_quiz_results');
                return $this->content;
            }

            // Find out all the userids which have a submitted grade
            $userids = array();
            $gradeforuser = array();
            foreach ($grades as $grade) {
                $userids[] = $grade->userid;
                $gradeforuser[$grade->userid] = (float)$grade->grade;
            }

            // Now find which groups these users belong in
            list($usertest, $params) = $DB->get_in_or_equal($userids);
            $params[] = $courseid;
            $usergroups = $DB->get_records_sql('
                    SELECT gm.id, gm.userid, gm.groupid, g.name
                    FROM {groups} g
                    LEFT JOIN {groups_members} gm ON g.id = gm.groupid
                    WHERE gm.userid ' . $usertest . ' AND g.courseid = ?', $params);

            // Now, iterate the grades again and sum them up for each group
            $groupgrades = array();
            foreach ($usergroups as $usergroup) {
                if (!isset($groupgrades[$usergroup->groupid])) {
                    $groupgrades[$usergroup->groupid] = array(
                            'sum' => (float)$gradeforuser[$usergroup->userid],
                            'number' => 1,
                            'group' => $usergroup->name);
                } else {
                    $groupgrades[$usergroup->groupid]['sum'] += $gradeforuser[$usergroup->userid];
                    $groupgrades[$usergroup->groupid]['number'] += 1;
                }
            }

            foreach($groupgrades as $groupid => $groupgrade) {
                $groupgrades[$groupid]['average'] = $groupgrades[$groupid]['sum'] / $groupgrades[$groupid]['number'];
            }

            // Sort groupgrades according to average grade, ascending
            uasort($groupgrades, create_function('$a, $b', 'if($a["average"] == $b["average"]) return 0; return ($a["average"] > $b["average"] ? 1 : -1);'));

            // How many groups do we have with graded member submissions to show?
            $numbest  = empty($this->config->showbest) ? 0 : min($this->config->showbest, count($groupgrades));
            $numworst = empty($this->config->showworst) ? 0 : min($this->config->showworst, count($groupgrades) - $numbest);

            // Collect all the group results we are going to use in $best and $worst
            $remaining = $numbest;
            $groupgrade = end($groupgrades);
            while ($remaining--) {
                $best[key($groupgrades)] = $groupgrade['average'];
                $groupgrade = prev($groupgrades);
            }

            $remaining = $numworst;
            $groupgrade = reset($groupgrades);
            while ($remaining--) {
                $worst[key($groupgrades)] = $groupgrade['average'];
                $groupgrade = next($groupgrades);
            }

            // Ready for output!
            $gradeformat = intval(empty($this->config->gradeformat) ? B_QUIZRESULTS_GRADE_FORMAT_PCT : $this->config->gradeformat);

            if (!$inquiz) {
                // Don't show header and link to the quiz if we ARE at the quiz...
                $this->content->text .= '<h1><a href="'.$CFG->wwwroot.'/mod/quiz/view.php?q='.$quizid.'">'.$quiz->name.'</a></h1>';
            }

            if ($nameformat = B_QUIZRESULTS_NAME_FORMAT_FULL) {
                if (has_capability('moodle/course:managegroups', $context)) {
                    $grouplink = $CFG->wwwroot.'/group/overview.php?id='.$courseid.'&amp;group=';
                } else if (has_capability('moodle/course:viewparticipants', $context)) {
                    $grouplink = $CFG->wwwroot.'/user/index.php?id='.$courseid.'&amp;group=';
                } else {
                    $grouplink = '';
                }
            }

            $rank = 0;
            if(!empty($best)) {
                $this->content->text .= '<table class="grades"><caption>';
                $this->content->text .= ($numbest == 1?get_string('bestgroupgrade', 'block_quiz_results'):get_string('bestgroupgrades', 'block_quiz_results', $numbest));
                $this->content->text .= '</caption><colgroup class="number" /><colgroup class="name" /><colgroup class="grade" /><tbody>';
                foreach($best as $groupid => $averagegrade) {
                    switch($nameformat) {
                        case B_QUIZRESULTS_NAME_FORMAT_ANON:
                        case B_QUIZRESULTS_NAME_FORMAT_ID:
                            $thisname = get_string('group');
                        break;
                        default:
                        case B_QUIZRESULTS_NAME_FORMAT_FULL:
                            if ($grouplink) {
                                $thisname = '<a href="'.$grouplink.$groupid.'">'.$groupgrades[$groupid]['group'].'</a>';
                            } else {
                                $thisname = $groupgrades[$groupid]['group'];
                            }
                        break;
                    }
                    $this->content->text .= '<tr><td>'.(++$rank).'.</td><td>'.$thisname.'</td><td>';
                    switch($gradeformat) {
                        case B_QUIZRESULTS_GRADE_FORMAT_FRA:
                            $this->content->text .= quiz_format_grade($quiz, $averagegrade).'/'.$quiz->grade;
                        break;
                        case B_QUIZRESULTS_GRADE_FORMAT_ABS:
                            $this->content->text .= quiz_format_grade($quiz, $averagegrade);
                        break;
                        default:
                        case B_QUIZRESULTS_GRADE_FORMAT_PCT:
                            $this->content->text .= round((float)$averagegrade / (float)$quiz->grade * 100).'%';
                        break;
                    }
                    $this->content->text .= '</td></tr>';
                }
                $this->content->text .= '</tbody></table>';
            }

            $rank = 0;
            if(!empty($worst)) {
                $worst = array_reverse($worst, true);
                $this->content->text .= '<table class="grades"><caption>';
                $this->content->text .= ($numworst == 1?get_string('worstgroupgrade', 'block_quiz_results'):get_string('worstgroupgrades', 'block_quiz_results', $numworst));
                $this->content->text .= '</caption><colgroup class="number" /><colgroup class="name" /><colgroup class="grade" /><tbody>';
                foreach($worst as $groupid => $averagegrade) {
                    switch($nameformat) {
                        case B_QUIZRESULTS_NAME_FORMAT_ANON:
                        case B_QUIZRESULTS_NAME_FORMAT_ID:
                            $thisname = get_string('group');
                        break;
                        default:
                        case B_QUIZRESULTS_NAME_FORMAT_FULL:
                            $thisname = '<a href="'.$CFG->wwwroot.'/course/group.php?group='.$groupid.'&amp;id='.$courseid.'">'.$groupgrades[$groupid]['group'].'</a>';
                        break;
                    }
                    $this->content->text .= '<tr><td>'.(++$rank).'.</td><td>'.$thisname.'</td><td>';
                    switch($gradeformat) {
                        case B_QUIZRESULTS_GRADE_FORMAT_FRA:
                            $this->content->text .= quiz_format_grade($quiz, $averagegrade).'/'.$quiz->grade;
                        break;
                        case B_QUIZRESULTS_GRADE_FORMAT_ABS:
                            $this->content->text .= quiz_format_grade($quiz, $averagegrade);
                        break;
                        default:
                        case B_QUIZRESULTS_GRADE_FORMAT_PCT:
                            $this->content->text .= round((float)$averagegrade / (float)$quiz->grade * 100).'%';
                        break;
                    }
                    $this->content->text .= '</td></tr>';
                }
                $this->content->text .= '</tbody></table>';
            }
            break;


            case SEPARATEGROUPS:
            // This is going to be just like no-groups mode, only we 'll filter
            // out the grades from people not in our group.
            if(empty($USER) || empty($USER->id)) {
                // Not logged in, so show nothing
                return $this->content;
            }

            $mygroups = groups_get_all_groups($courseid, $USER->id);
            if(empty($mygroups)) {
                // Not member of a group, show nothing
                return $this->content;
            }

            // Get users from the same groups as me.
            list($grouptest, $params) = $DB->get_in_or_equal(array_keys($mygroups));
            $mygroupsusers = $DB->get_records_sql_menu(
                    'SELECT DISTINCT userid, 1 FROM {groups_members} WHERE groupid ' . $grouptest,
                    $params);

            // Filter out the grades belonging to other users, and proceed as if there were no groups
            foreach ($grades as $key => $grade) {
                if (!isset($mygroupsusers[$grade->userid])) {
                    unset($grades[$key]);
                }
            }

            // No break, fall through to the default case now we have filtered the $grades array.
            default:
            case NOGROUPS:
            // Single user mode
            $numbest  = empty($this->config->showbest) ? 0 : min($this->config->showbest, count($grades));
            $numworst = empty($this->config->showworst) ? 0 : min($this->config->showworst, count($grades) - $numbest);

            // Collect all the usernames we are going to need
            $remaining = $numbest;
            $grade = end($grades);
            while($remaining--) {
                $best[$grade->userid] = $grade->id;
                $grade = prev($grades);
            }

            $remaining = $numworst;
            $grade = reset($grades);
            while($remaining--) {
                $worst[$grade->userid] = $grade->id;
                $grade = next($grades);
            }

            if(empty($best) && empty($worst)) {
                // Nothing to show, for some reason...
                return $this->content;
            }

            // Now grab all the users from the database
            $userids = array_merge(array_keys($best), array_keys($worst));
            $users = $DB->get_records_list('user', 'id', $userids, '', 'id, firstname, lastname, idnumber');

            // Ready for output!

            $gradeformat = intval(empty($this->config->gradeformat) ? B_QUIZRESULTS_GRADE_FORMAT_PCT : $this->config->gradeformat);

            if(!$inquiz) {
                // Don't show header and link to the quiz if we ARE at the quiz...
                $this->content->text .= '<h1><a href="'.$CFG->wwwroot.'/mod/quiz/view.php?q='.$quizid.'">'.$quiz->name.'</a></h1>';
            }

            $rank = 0;
            if(!empty($best)) {
                $this->content->text .= '<table class="grades"><caption>';
                $this->content->text .= ($numbest == 1?get_string('bestgrade', 'block_quiz_results'):get_string('bestgrades', 'block_quiz_results', $numbest));
                $this->content->text .= '</caption><colgroup class="number" /><colgroup class="name" /><colgroup class="grade" /><tbody>';
                foreach($best as $userid => $gradeid) {
                    switch($nameformat) {
                        case B_QUIZRESULTS_NAME_FORMAT_ID:
                            $thisname = get_string('user').' '.intval($users[$userid]->idnumber);
                        break;
                        case B_QUIZRESULTS_NAME_FORMAT_ANON:
                            $thisname = get_string('user');
                        break;
                        default:
                        case B_QUIZRESULTS_NAME_FORMAT_FULL:
                            $thisname = '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$userid.'&amp;course='.$courseid.'">'.fullname($users[$userid]).'</a>';
                        break;
                    }
                    $this->content->text .= '<tr><td>'.(++$rank).'.</td><td>'.$thisname.'</td><td>';
                    switch($gradeformat) {
                        case B_QUIZRESULTS_GRADE_FORMAT_FRA:
                            $this->content->text .=  quiz_format_grade($quiz, $grades[$gradeid]->grade).'/'.$quiz->grade;
                        break;
                        case B_QUIZRESULTS_GRADE_FORMAT_ABS:
                            $this->content->text .= quiz_format_grade($quiz, $grades[$gradeid]->grade);
                        break;
                        default:
                        case B_QUIZRESULTS_GRADE_FORMAT_PCT:
                            if ($quiz->grade) {
                                $this->content->text .= round((float)$grades[$gradeid]->grade / (float)$quiz->grade * 100).'%';
                            } else {
                                $this->content->text .= '--%';
                            }
                        break;
                    }
                    $this->content->text .= '</td></tr>';
                }
                $this->content->text .= '</tbody></table>';
            }

            $rank = 0;
            if(!empty($worst)) {
                $worst = array_reverse($worst, true);
                $this->content->text .= '<table class="grades"><caption>';
                $this->content->text .= ($numworst == 1?get_string('worstgrade', 'block_quiz_results'):get_string('worstgrades', 'block_quiz_results', $numworst));
                $this->content->text .= '</caption><colgroup class="number" /><colgroup class="name" /><colgroup class="grade" /><tbody>';
                foreach($worst as $userid => $gradeid) {
                    switch($nameformat) {
                        case B_QUIZRESULTS_NAME_FORMAT_ID:
                            $thisname = get_string('user').' '.intval($users[$userid]->idnumber);
                        break;
                        case B_QUIZRESULTS_NAME_FORMAT_ANON:
                            $thisname = get_string('user');
                        break;
                        default:
                        case B_QUIZRESULTS_NAME_FORMAT_FULL:
                            $thisname = '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$userid.'&amp;course='.$courseid.'">'.fullname($users[$userid]).'</a>';
                        break;
                    }
                    $this->content->text .= '<tr><td>'.(++$rank).'.</td><td>'.$thisname.'</td><td>';
                    switch($gradeformat) {
                        case B_QUIZRESULTS_GRADE_FORMAT_FRA:
                            $this->content->text .= quiz_format_grade($quiz, $grades[$gradeid]->grade).'/'.$quiz->grade;
                        break;
                        case B_QUIZRESULTS_GRADE_FORMAT_ABS:
                            $this->content->text .= quiz_format_grade($quiz, $grades[$gradeid]->grade);
                        break;
                        default:
                        case B_QUIZRESULTS_GRADE_FORMAT_PCT:
                            $this->content->text .= round((float)$grades[$gradeid]->grade / (float)$quiz->grade * 100).'%';
                        break;
                    }
                    $this->content->text .= '</td></tr>';
                }
                $this->content->text .= '</tbody></table>';
            }
            break;
        }

        return $this->content;
    }

    function instance_allow_multiple() {
        return true;
    }
}

?>
Commit	Line	Data
98ad7484	1	<?php //$Id$
98ad7484	2
85311ca8	3	define('B_QUIZRESULTS_NAME_FORMAT_FULL', 1);
	4	define('B_QUIZRESULTS_NAME_FORMAT_ID', 2);
	5	define('B_QUIZRESULTS_NAME_FORMAT_ANON', 3);
	6	define('B_QUIZRESULTS_GRADE_FORMAT_PCT', 1);
	7	define('B_QUIZRESULTS_GRADE_FORMAT_FRA', 2);
	8	define('B_QUIZRESULTS_GRADE_FORMAT_ABS', 3);
98ad7484	9
	10	class block_quiz_results extends block_base {
	11	function init() {
	12	$this->title = get_string('formaltitle', 'block_quiz_results');
433c242f	13	$this->version = 2007101509;
98ad7484	14	}
98ad7484	15
63927672	16	function applicable_formats() {
76d37688	17	return array('course' => true, 'mod-quiz' => true);
63927672	18	}
63927672	19
98ad7484	20	function get_content() {
44e1b7d7	21	global $USER, $CFG, $DB;
98ad7484	22
	23	if ($this->content !== NULL) {
	24	return $this->content;
	25	}
98ad7484	26
	27	$this->content = new stdClass;
	28	$this->content->text = '';
	29	$this->content->footer = '';
	30
164e3054	31	if (empty($this->instance)) {
	32	return $this->content;
	33	}
	34
3179b000	35	if ($this->page->activityname == 'quiz') {
	36	$quiz = $this->page->activityrecord;
	37	$quizid = $quiz->id;
	38	$courseid = $this->page->course->id;
	39	$inquiz = true;
	40	} else if (!empty($this->config->quizid)) {
	41	$quizid = $this->config->quizid;
	42	$quiz = $DB->get_record('quiz', array('id' => $quizid));
	43	if (empty($quiz)) {
	44	$this->content->text = get_string('error_emptyquizrecord', 'block_quiz_results');
	45	return $this->content;
0144a0a7	46	}
3179b000	47	$courseid = $quiz->course;
	48	$inquiz = false;
	49	} else {
	50	$quizid = 0;
98ad7484	51	}
98ad7484	52
f28f2d90	53	if (empty($quizid)) {
6b4dc5a3	54	$this->content->text = get_string('error_emptyquizid', 'block_quiz_results');
98ad7484	55	return $this->content;
	56	}
	57
3179b000	58	if (empty($this->config->showbest) && empty($this->config->showworst)) {
3179b000	59	$this->content->text = get_string('configuredtoshownothing', 'block_quiz_results');
98ad7484	60	return $this->content;
	61	}
	62
	63	// Get the grades for this quiz
7192011c	64	$grades = $DB->get_records('quiz_grades', array('quiz' => $quizid), 'grade, timemodified DESC');
98ad7484	65
f28f2d90	66	if (empty($grades)) {
98ad7484	67	// No grades, sorry
6b4dc5a3	68	// The block will hide itself in this case
00a4237f	69	return $this->content;
98ad7484	70	}
98ad7484	71
6b4dc5a3	72	$groupmode = NOGROUPS;
	73	$best = array();
	74	$worst = array();
98ad7484	75
3179b000	76	if (!empty($this->config->nameformat)) {
	77	$nameformat = $this->config->nameformat;
	78	} else {
	79	$nameformat = B_QUIZRESULTS_NAME_FORMAT_FULL;
	80	}
85311ca8	81
3179b000	82	if (!empty($this->config->usegroups)) {
	83	if ($inquiz) {
	84	$cm = $this->page->cm;
e92c286c	85	$context = $this->page->context;
3179b000	86	} else {
3179b000	87	$cm = get_coursemodule_from_instance('quiz', $quizid, $courseid);
e92c286c	88	$context = get_context_instance(CONTEXT_MODULE, $cm->id);
3179b000	89	}
3179b000	90	$groupmode = groups_get_activity_groupmode($cm);
6b4dc5a3	91
e92c286c	92	if ($groupmode == SEPARATEGROUPS && has_capability('moodle/site:accessallgroups', $context)) {
	93	// We 'll make an exception in this case
	94	$groupmode = VISIBLEGROUPS;
	95	}
b35bc4d8	96	}
6b4dc5a3	97
3179b000	98	switch ($groupmode) {
b35bc4d8	99	case VISIBLEGROUPS:
b35bc4d8	100	// Display group-mode results
2c386f82	101	$groups = groups_get_all_groups($courseid);
6b4dc5a3	102
	103	if(empty($groups)) {
	104	// No groups exist, sorry
	105	$this->content->text = get_string('error_nogroupsexist', 'block_quiz_results');
	106	return $this->content;
	107	}
	108
	109	// Find out all the userids which have a submitted grade
	110	$userids = array();
7192011c	111	$gradeforuser = array();
3179b000	112	foreach ($grades as $grade) {
6b4dc5a3	113	$userids[] = $grade->userid;
7192011c	114	$gradeforuser[$grade->userid] = (float)$grade->grade;
6b4dc5a3	115	}
	116
	117	// Now find which groups these users belong in
7192011c	118	list($usertest, $params) = $DB->get_in_or_equal($userids);
	119	$params[] = $courseid;
	120	$usergroups = $DB->get_records_sql('
	121	SELECT gm.id, gm.userid, gm.groupid, g.name
	122	FROM {groups} g
	123	LEFT JOIN {groups_members} gm ON g.id = gm.groupid
	124	WHERE gm.userid ' . $usertest . ' AND g.courseid = ?', $params);
	125
	126	// Now, iterate the grades again and sum them up for each group
6b4dc5a3	127	$groupgrades = array();
7192011c	128	foreach ($usergroups as $usergroup) {
	129	if (!isset($groupgrades[$usergroup->groupid])) {
	130	$groupgrades[$usergroup->groupid] = array(
	131	'sum' => (float)$gradeforuser[$usergroup->userid],
	132	'number' => 1,
	133	'group' => $usergroup->name);
	134	} else {
	135	$groupgrades[$usergroup->groupid]['sum'] += $gradeforuser[$usergroup->userid];
	136	$groupgrades[$usergroup->groupid]['number'] += 1;
6b4dc5a3	137	}
	138	}
	139
3779fd55	140	foreach($groupgrades as $groupid => $groupgrade) {
	141	$groupgrades[$groupid]['average'] = $groupgrades[$groupid]['sum'] / $groupgrades[$groupid]['number'];
	142	}
	143
	144	// Sort groupgrades according to average grade, ascending
	145	uasort($groupgrades, create_function('$a, $b', 'if($a["average"] == $b["average"]) return 0; return ($a["average"] > $b["average"] ? 1 : -1);'));
6b4dc5a3	146
	147	// How many groups do we have with graded member submissions to show?
	148	$numbest = empty($this->config->showbest) ? 0 : min($this->config->showbest, count($groupgrades));
	149	$numworst = empty($this->config->showworst) ? 0 : min($this->config->showworst, count($groupgrades) - $numbest);
	150
	151	// Collect all the group results we are going to use in $best and $worst
	152	$remaining = $numbest;
	153	$groupgrade = end($groupgrades);
3179b000	154	while ($remaining--) {
3779fd55	155	$best[key($groupgrades)] = $groupgrade['average'];
6b4dc5a3	156	$groupgrade = prev($groupgrades);
	157	}
	158
	159	$remaining = $numworst;
	160	$groupgrade = reset($groupgrades);
3179b000	161	while ($remaining--) {
3779fd55	162	$worst[key($groupgrades)] = $groupgrade['average'];
6b4dc5a3	163	$groupgrade = next($groupgrades);
	164	}
	165
	166	// Ready for output!
85311ca8	167	$gradeformat = intval(empty($this->config->gradeformat) ? B_QUIZRESULTS_GRADE_FORMAT_PCT : $this->config->gradeformat);
6b4dc5a3	168
3179b000	169	if (!$inquiz) {
f58a15de	170	// Don't show header and link to the quiz if we ARE at the quiz...
	171	$this->content->text .= '<h1><a href="'.$CFG->wwwroot.'/mod/quiz/view.php?q='.$quizid.'">'.$quiz->name.'</a></h1>';
	172	}
6b4dc5a3	173
9d6c4e80	174	if ($nameformat = B_QUIZRESULTS_NAME_FORMAT_FULL) {
9d6c4e80	175	if (has_capability('moodle/course:managegroups', $context)) {
3d05fc13	176	$grouplink = $CFG->wwwroot.'/group/overview.php?id='.$courseid.'&group=';
9d6c4e80	177	} else if (has_capability('moodle/course:viewparticipants', $context)) {
	178	$grouplink = $CFG->wwwroot.'/user/index.php?id='.$courseid.'&group=';
	179	} else {
	180	$grouplink = '';
	181	}
	182	}
	183
6b4dc5a3	184	$rank = 0;
6b4dc5a3	185	if(!empty($best)) {
d9f7e051	186	$this->content->text .= '<table class="grades"><caption>';
	187	$this->content->text .= ($numbest == 1?get_string('bestgroupgrade', 'block_quiz_results'):get_string('bestgroupgrades', 'block_quiz_results', $numbest));
	188	$this->content->text .= '</caption><colgroup class="number" /><colgroup class="name" /><colgroup class="grade" /><tbody>';
6b4dc5a3	189	foreach($best as $groupid => $averagegrade) {
85311ca8	190	switch($nameformat) {
	191	case B_QUIZRESULTS_NAME_FORMAT_ANON:
	192	case B_QUIZRESULTS_NAME_FORMAT_ID:
	193	$thisname = get_string('group');
	194	break;
	195	default:
	196	case B_QUIZRESULTS_NAME_FORMAT_FULL:
9d6c4e80	197	if ($grouplink) {
	198	$thisname = '<a href="'.$grouplink.$groupid.'">'.$groupgrades[$groupid]['group'].'</a>';
	199	} else {
	200	$thisname = $groupgrades[$groupid]['group'];
	201	}
85311ca8	202	break;
	203	}
	204	$this->content->text .= '<tr><td>'.(++$rank).'.</td><td>'.$thisname.'</td><td>';
6b4dc5a3	205	switch($gradeformat) {
85311ca8	206	case B_QUIZRESULTS_GRADE_FORMAT_FRA:
f88fb62c	207	$this->content->text .= quiz_format_grade($quiz, $averagegrade).'/'.$quiz->grade;
6b4dc5a3	208	break;
85311ca8	209	case B_QUIZRESULTS_GRADE_FORMAT_ABS:
f88fb62c	210	$this->content->text .= quiz_format_grade($quiz, $averagegrade);
6b4dc5a3	211	break;
6b4dc5a3	212	default:
85311ca8	213	case B_QUIZRESULTS_GRADE_FORMAT_PCT:
090cf95a	214	$this->content->text .= round((float)$averagegrade / (float)$quiz->grade * 100).'%';
6b4dc5a3	215	break;
	216	}
	217	$this->content->text .= '</td></tr>';
	218	}
	219	$this->content->text .= '</tbody></table>';
	220	}
	221
	222	$rank = 0;
	223	if(!empty($worst)) {
	224	$worst = array_reverse($worst, true);
d9f7e051	225	$this->content->text .= '<table class="grades"><caption>';
	226	$this->content->text .= ($numworst == 1?get_string('worstgroupgrade', 'block_quiz_results'):get_string('worstgroupgrades', 'block_quiz_results', $numworst));
	227	$this->content->text .= '</caption><colgroup class="number" /><colgroup class="name" /><colgroup class="grade" /><tbody>';
6b4dc5a3	228	foreach($worst as $groupid => $averagegrade) {
85311ca8	229	switch($nameformat) {
	230	case B_QUIZRESULTS_NAME_FORMAT_ANON:
	231	case B_QUIZRESULTS_NAME_FORMAT_ID:
	232	$thisname = get_string('group');
	233	break;
	234	default:
	235	case B_QUIZRESULTS_NAME_FORMAT_FULL:
	236	$thisname = '<a href="'.$CFG->wwwroot.'/course/group.php?group='.$groupid.'&id='.$courseid.'">'.$groupgrades[$groupid]['group'].'</a>';
	237	break;
	238	}
	239	$this->content->text .= '<tr><td>'.(++$rank).'.</td><td>'.$thisname.'</td><td>';
6b4dc5a3	240	switch($gradeformat) {
85311ca8	241	case B_QUIZRESULTS_GRADE_FORMAT_FRA:
f88fb62c	242	$this->content->text .= quiz_format_grade($quiz, $averagegrade).'/'.$quiz->grade;
6b4dc5a3	243	break;
85311ca8	244	case B_QUIZRESULTS_GRADE_FORMAT_ABS:
f88fb62c	245	$this->content->text .= quiz_format_grade($quiz, $averagegrade);
6b4dc5a3	246	break;
6b4dc5a3	247	default:
85311ca8	248	case B_QUIZRESULTS_GRADE_FORMAT_PCT:
090cf95a	249	$this->content->text .= round((float)$averagegrade / (float)$quiz->grade * 100).'%';
6b4dc5a3	250	break;
	251	}
	252	$this->content->text .= '</td></tr>';
	253	}
	254	$this->content->text .= '</tbody></table>';
	255	}
b35bc4d8	256	break;
6b4dc5a3	257
6b4dc5a3	258
b35bc4d8	259	case SEPARATEGROUPS:
	260	// This is going to be just like no-groups mode, only we 'll filter
	261	// out the grades from people not in our group.
	262	if(empty($USER) \|\| empty($USER->id)) {
	263	// Not logged in, so show nothing
	264	return $this->content;
	265	}
	266
2c386f82	267	$mygroups = groups_get_all_groups($courseid, $USER->id);
b35bc4d8	268	if(empty($mygroups)) {
	269	// Not member of a group, show nothing
	270	return $this->content;
	271	}
	272
7192011c	273	// Get users from the same groups as me.
	274	list($grouptest, $params) = $DB->get_in_or_equal(array_keys($mygroups));
	275	$mygroupsusers = $DB->get_records_sql_menu(
	276	'SELECT DISTINCT userid, 1 FROM {groups_members} WHERE groupid ' . $grouptest,
	277	$params);
b35bc4d8	278
7192011c	279	// Filter out the grades belonging to other users, and proceed as if there were no groups
	280	foreach ($grades as $key => $grade) {
	281	if (!isset($mygroupsusers[$grade->userid])) {
	282	unset($grades[$key]);
	283	}
	284	}
b35bc4d8	285
7192011c	286	// No break, fall through to the default case now we have filtered the $grades array.
b35bc4d8	287	default:
b35bc4d8	288	case NOGROUPS:
98ad7484	289	// Single user mode
6b4dc5a3	290	$numbest = empty($this->config->showbest) ? 0 : min($this->config->showbest, count($grades));
6b4dc5a3	291	$numworst = empty($this->config->showworst) ? 0 : min($this->config->showworst, count($grades) - $numbest);
98ad7484	292
	293	// Collect all the usernames we are going to need
	294	$remaining = $numbest;
	295	$grade = end($grades);
	296	while($remaining--) {
	297	$best[$grade->userid] = $grade->id;
	298	$grade = prev($grades);
	299	}
	300
	301	$remaining = $numworst;
	302	$grade = reset($grades);
	303	while($remaining--) {
	304	$worst[$grade->userid] = $grade->id;
	305	$grade = next($grades);
	306	}
	307
	308	if(empty($best) && empty($worst)) {
	309	// Nothing to show, for some reason...
	310	return $this->content;
	311	}
	312
	313	// Now grab all the users from the database
	314	$userids = array_merge(array_keys($best), array_keys($worst));
44e1b7d7	315	$users = $DB->get_records_list('user', 'id', $userids, '', 'id, firstname, lastname, idnumber');
98ad7484	316
	317	// Ready for output!
	318
85311ca8	319	$gradeformat = intval(empty($this->config->gradeformat) ? B_QUIZRESULTS_GRADE_FORMAT_PCT : $this->config->gradeformat);
98ad7484	320
3179b000	321	if(!$inquiz) {
f58a15de	322	// Don't show header and link to the quiz if we ARE at the quiz...
	323	$this->content->text .= '<h1><a href="'.$CFG->wwwroot.'/mod/quiz/view.php?q='.$quizid.'">'.$quiz->name.'</a></h1>';
	324	}
98ad7484	325
	326	$rank = 0;
	327	if(!empty($best)) {
d9f7e051	328	$this->content->text .= '<table class="grades"><caption>';
	329	$this->content->text .= ($numbest == 1?get_string('bestgrade', 'block_quiz_results'):get_string('bestgrades', 'block_quiz_results', $numbest));
	330	$this->content->text .= '</caption><colgroup class="number" /><colgroup class="name" /><colgroup class="grade" /><tbody>';
98ad7484	331	foreach($best as $userid => $gradeid) {
85311ca8	332	switch($nameformat) {
85311ca8	333	case B_QUIZRESULTS_NAME_FORMAT_ID:
9101efd3	334	$thisname = get_string('user').' '.intval($users[$userid]->idnumber);
85311ca8	335	break;
85311ca8	336	case B_QUIZRESULTS_NAME_FORMAT_ANON:
9101efd3	337	$thisname = get_string('user');
85311ca8	338	break;
	339	default:
	340	case B_QUIZRESULTS_NAME_FORMAT_FULL:
	341	$thisname = '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$userid.'&course='.$courseid.'">'.fullname($users[$userid]).'</a>';
	342	break;
	343	}
	344	$this->content->text .= '<tr><td>'.(++$rank).'.</td><td>'.$thisname.'</td><td>';
98ad7484	345	switch($gradeformat) {
85311ca8	346	case B_QUIZRESULTS_GRADE_FORMAT_FRA:
f88fb62c	347	$this->content->text .= quiz_format_grade($quiz, $grades[$gradeid]->grade).'/'.$quiz->grade;
98ad7484	348	break;
85311ca8	349	case B_QUIZRESULTS_GRADE_FORMAT_ABS:
f88fb62c	350	$this->content->text .= quiz_format_grade($quiz, $grades[$gradeid]->grade);
98ad7484	351	break;
98ad7484	352	default:
85311ca8	353	case B_QUIZRESULTS_GRADE_FORMAT_PCT:
f64fdf3f	354	if ($quiz->grade) {
	355	$this->content->text .= round((float)$grades[$gradeid]->grade / (float)$quiz->grade * 100).'%';
	356	} else {
	357	$this->content->text .= '--%';
	358	}
98ad7484	359	break;
	360	}
	361	$this->content->text .= '</td></tr>';
	362	}
	363	$this->content->text .= '</tbody></table>';
	364	}
	365
	366	$rank = 0;
	367	if(!empty($worst)) {
	368	$worst = array_reverse($worst, true);
d9f7e051	369	$this->content->text .= '<table class="grades"><caption>';
	370	$this->content->text .= ($numworst == 1?get_string('worstgrade', 'block_quiz_results'):get_string('worstgrades', 'block_quiz_results', $numworst));
	371	$this->content->text .= '</caption><colgroup class="number" /><colgroup class="name" /><colgroup class="grade" /><tbody>';
98ad7484	372	foreach($worst as $userid => $gradeid) {
85311ca8	373	switch($nameformat) {
85311ca8	374	case B_QUIZRESULTS_NAME_FORMAT_ID:
9101efd3	375	$thisname = get_string('user').' '.intval($users[$userid]->idnumber);
85311ca8	376	break;
85311ca8	377	case B_QUIZRESULTS_NAME_FORMAT_ANON:
9101efd3	378	$thisname = get_string('user');
85311ca8	379	break;
	380	default:
	381	case B_QUIZRESULTS_NAME_FORMAT_FULL:
	382	$thisname = '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$userid.'&course='.$courseid.'">'.fullname($users[$userid]).'</a>';
	383	break;
	384	}
	385	$this->content->text .= '<tr><td>'.(++$rank).'.</td><td>'.$thisname.'</td><td>';
98ad7484	386	switch($gradeformat) {
85311ca8	387	case B_QUIZRESULTS_GRADE_FORMAT_FRA:
f88fb62c	388	$this->content->text .= quiz_format_grade($quiz, $grades[$gradeid]->grade).'/'.$quiz->grade;
98ad7484	389	break;
85311ca8	390	case B_QUIZRESULTS_GRADE_FORMAT_ABS:
f88fb62c	391	$this->content->text .= quiz_format_grade($quiz, $grades[$gradeid]->grade);
98ad7484	392	break;
98ad7484	393	default:
85311ca8	394	case B_QUIZRESULTS_GRADE_FORMAT_PCT:
090cf95a	395	$this->content->text .= round((float)$grades[$gradeid]->grade / (float)$quiz->grade * 100).'%';
98ad7484	396	break;
	397	}
	398	$this->content->text .= '</td></tr>';
	399	}
	400	$this->content->text .= '</tbody></table>';
	401	}
b35bc4d8	402	break;
98ad7484	403	}
98ad7484	404
98ad7484	405	return $this->content;
	406	}
	407
63927672	408	function instance_allow_multiple() {
98ad7484	409	return true;
	410	}
	411	}
	412
	413	?>