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average class/group should not take non-graded students into consideration

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toyomoyo 2007-07-16 09:03:23 +00:00
parent a8578a933b
commit 66b9da277c
1 changed files with 18 additions and 24 deletions
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40
grade/report/grader/lib.php
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@ -333,23 +333,16 @@ class grade_report_grader extends grade_report {
* Fetches and returns a count of all the users that will be shows on this page.
* @return int Count of users
*/
function get_numusers($group=true) {
function get_numusers() {
global $CFG;
if ($group) {
$groupsql = $this->groupsql;
$groupsqlwhere = $this->groupwheresql;
} else {
$groupsql = '';
$groupsqlwhere = '';
}
$countsql = "SELECT COUNT(DISTINCT u.id)
FROM {$CFG->prefix}grade_grades g RIGHT OUTER JOIN
{$CFG->prefix}user u ON (u.id = g.userid AND g.itemid = $this->sortitemid)
LEFT JOIN {$CFG->prefix}role_assignments ra ON u.id = ra.userid
$groupsql
$this->groupsql
WHERE ra.roleid in ($this->gradebookroles)
$groupsqlwhere
$this->groupwheresql
AND ra.contextid ".get_related_contexts_string($this->context);
return count_records_sql($countsql);
}
@ -735,12 +728,11 @@ class grade_report_grader extends grade_report {
global $CFG;
$groupavghtml = '';
$numusers = $this->get_numusers(true); // find number of users in this group
if ($this->currentgroup && $this->get_pref('showgroups')) {
/** SQL for finding group sum */
// do not sum -1 (no grade), treat as 0 for now
$SQL = "SELECT g.itemid, SUM(g.finalgrade) as sum
$SQL = "SELECT g.itemid, SUM(g.finalgrade) as sum, COUNT(DISTINCT(u.id)) as count
FROM {$CFG->prefix}grade_items gi LEFT JOIN
{$CFG->prefix}grade_grades g ON gi.id = g.itemid RIGHT OUTER JOIN
{$CFG->prefix}user u ON u.id = g.userid LEFT JOIN
@ -754,21 +746,23 @@ class grade_report_grader extends grade_report {
GROUP BY g.itemid";
$groupsum = array();
$groupscount = array();
$sums = get_records_sql($SQL);
foreach ($sums as $itemid => $csum) {
$groupsum[$itemid] = $csum;
$groupsum[$itemid] = $csum->sum;
$groupscount[$itemid] = $csum->count;
}
$groupavghtml = '<tr><th>'.get_string('groupavg', 'grades').'</th>';
foreach ($this->items as $item) {
if ($numusers == 0 || !isset($groupsum[$item->id])) {
if (empty($groupscount[$itemid]) || !isset($groupsum[$item->id])) {
$groupavghtml .= '<td>-</td>';
} else {
$sum = $groupsum[$item->id];
if ($item->scaleid) {
$gradeitemsum = $groupsum[$item->id]->sum;
$gradeitemavg = $gradeitemsum/$numusers;
$gradeitemsum = $groupsum[$item->id];
$gradeitemavg = $gradeitemsum/$groupscount[$item->id];
$scaleval = round($this->get_grade_clean($gradeitemavg));
@ -783,7 +777,7 @@ class grade_report_grader extends grade_report {
$gradehtml = $scales[$scaleval-1];
} else {
$gradeval = $this->get_grade_clean($sum->sum/$numusers);
$gradeval = $this->get_grade_clean($sum/$groupscount[$item->id]);
$gradehtml = $gradeval;
}
$groupavghtml .= '<td>'.$gradehtml.'</td>';
@ -802,12 +796,11 @@ class grade_report_grader extends grade_report {
global $CFG;
$gradeavghtml = '';
$numusers = $this->get_numusers(false); // find total number of users, without group constraint
if ($this->get_pref('showaverages')) {
/** SQL for finding the SUM grades of all visible users ($CFG->gradebookroles) */
// do not sum -1 (no grade), treat as 0 for now
$SQL = "SELECT g.itemid, SUM(g.finalgrade) as sum
$SQL = "SELECT g.itemid, SUM(g.finalgrade) as sum, COUNT(DISTINCT(u.id)) as count
FROM {$CFG->prefix}grade_items gi LEFT JOIN
{$CFG->prefix}grade_grades g ON gi.id = g.itemid RIGHT OUTER JOIN
{$CFG->prefix}user u ON u.id = g.userid LEFT JOIN
@ -821,18 +814,19 @@ class grade_report_grader extends grade_report {
$classsum = array();
$sums = get_records_sql($SQL);
foreach ($sums as $itemid => $csum) {
$classsum[$itemid] = $csum;
$classsum[$itemid] = $csum->sum;
$classcount[$itemid] = $csum->count;
}
$gradeavghtml = '<tr><th>'.get_string('average', 'grades').'</th>';
foreach ($this->items as $item) {
if ($numusers == 0 || !isset($classsum[$item->id])) {
if (empty($classcount[$itemid]) || !isset($classsum[$item->id])) {
$gradeavghtml .= '<td>-</td>';
} else {
$sum = $classsum[$item->id];
if ($item->scaleid) {
$scaleval = round($this->get_grade_clean($sum->sum/$numusers));
$scaleval = round($this->get_grade_clean($sum/$classcount[$itemid]));
$scales_array = get_records_list('scale', 'id', $item->scaleid);
$scale = $scales_array[$item->scaleid];
$scales = explode(",", $scale->scale);
@ -844,7 +838,7 @@ class grade_report_grader extends grade_report {
$gradehtml = $scales[$scaleval-1];
} else {
$gradeval = $this->get_grade_clean($sum->sum/$numusers);
$gradeval = $this->get_grade_clean($sum/$classcount[$itemid]);
$gradehtml = $gradeval;
}
$gradeavghtml .= '<td>'.$gradehtml.'</td>';