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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* This page handles listing of assign overrides
*
* @package mod_assign
* @copyright 2016 Ilya Tregubov
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once(dirname(__FILE__) . '/../../config.php');
require_once($CFG->dirroot.'/mod/assign/lib.php');
require_once($CFG->dirroot.'/mod/assign/locallib.php');
require_once($CFG->dirroot.'/mod/assign/override_form.php');
$cmid = required_param('cmid', PARAM_INT);
$mode = optional_param('mode', '', PARAM_ALPHA); // One of 'user' or 'group', default is 'group'.
$action = optional_param('action', '', PARAM_ALPHA);
$redirect = $CFG->wwwroot.'/mod/assign/overrides.php?cmid=' . $cmid . '&mode=group';
list($course, $cm) = get_course_and_cm_from_cmid($cmid, 'assign');
$assign = $DB->get_record('assign', array('id' => $cm->instance), '*', MUST_EXIST);
require_login($course, false, $cm);
$context = context_module::instance($cm->id);
// Check the user has the required capabilities to list overrides.
require_capability('mod/assign:manageoverrides', $context);
$assigngroupmode = groups_get_activity_groupmode($cm);
$accessallgroups = ($assigngroupmode == NOGROUPS) || has_capability('moodle/site:accessallgroups', $context);
$overridecountgroup = $DB->count_records('assign_overrides', array('userid' => null, 'assignid' => $assign->id));
// Get the course groups that the current user can access.
$groups = $accessallgroups ? groups_get_all_groups($cm->course) : groups_get_activity_allowed_groups($cm);
// Default mode is "group", unless there are no groups.
if ($mode != "user" and $mode != "group") {
if (!empty($groups)) {
$mode = "group";
} else {
$mode = "user";
}
}
$groupmode = ($mode == "group");
$url = new moodle_url('/mod/assign/overrides.php', array('cmid' => $cm->id, 'mode' => $mode));
$PAGE->set_url($url);
if ($action == 'movegroupoverride') {
$id = required_param('id', PARAM_INT);
$dir = required_param('dir', PARAM_ALPHA);
if (confirm_sesskey()) {
move_group_override($id, $dir, $assign->id);
}
redirect($redirect);
}
// Display a list of overrides.
$PAGE->set_pagelayout('admin');
$PAGE->set_title(get_string('overrides', 'assign'));
$PAGE->set_heading($course->fullname);
echo $OUTPUT->header();
echo $OUTPUT->heading(format_string($assign->name, true, array('context' => $context)));
// Delete orphaned group overrides.
$sql = 'SELECT o.id
FROM {assign_overrides} o
LEFT JOIN {groups} g ON o.groupid = g.id
WHERE o.groupid IS NOT NULL
AND g.id IS NULL
AND o.assignid = ?';
$params = array($assign->id);
$orphaned = $DB->get_records_sql($sql, $params);
if (!empty($orphaned)) {
$DB->delete_records_list('assign_overrides', 'id', array_keys($orphaned));
}
$overrides = [];
// Fetch all overrides.
if ($groupmode) {
$colname = get_string('group');
// To filter the result by the list of groups that the current user has access to.
if ($groups) {
$params = ['assignid' => $assign->id];
list($insql, $inparams) = $DB->get_in_or_equal(array_keys($groups), SQL_PARAMS_NAMED);
$params += $inparams;
$sql = "SELECT o.*, g.name
FROM {assign_overrides} o
JOIN {groups} g ON o.groupid = g.id
WHERE o.assignid = :assignid AND g.id $insql
ORDER BY o.sortorder";
$overrides = $DB->get_records_sql($sql, $params);
}
} else {
$colname = get_string('user');
list($sort, $params) = users_order_by_sql('u');
$params['assignid'] = $assign->id;
if ($accessallgroups) {
$sql = 'SELECT o.*, ' . get_all_user_name_fields(true, 'u') . '
FROM {assign_overrides} o
JOIN {user} u ON o.userid = u.id
WHERE o.assignid = :assignid
ORDER BY ' . $sort;
$overrides = $DB->get_records_sql($sql, $params);
} else if ($groups) {
list($insql, $inparams) = $DB->get_in_or_equal(array_keys($groups), SQL_PARAMS_NAMED);
$params += $inparams;
$sql = 'SELECT o.*, ' . get_all_user_name_fields(true, 'u') . '
FROM {assign_overrides} o
JOIN {user} u ON o.userid = u.id
JOIN {groups_members} gm ON u.id = gm.userid
WHERE o.assignid = :assignid AND gm.groupid ' . $insql . '
ORDER BY ' . $sort;
$overrides = $DB->get_records_sql($sql, $params);
}
}
// Initialise table.
$table = new html_table();
$table->headspan = array(1, 2, 1);
$table->colclasses = array('colname', 'colsetting', 'colvalue', 'colaction');
$table->head = array(
$colname,
get_string('overrides', 'assign'),
get_string('action'),
);
$userurl = new moodle_url('/user/view.php', array());
$groupurl = new moodle_url('/group/overview.php', array('id' => $cm->course));
$overridedeleteurl = new moodle_url('/mod/assign/overridedelete.php');
$overrideediturl = new moodle_url('/mod/assign/overrideedit.php');
$hasinactive = false; // Whether there are any inactive overrides.
foreach ($overrides as $override) {
$fields = array();
$values = array();
$active = true;
// Check for inactive overrides.
if (!$groupmode) {
if (!is_enrolled($context, $override->userid)) {
// User not enrolled.
$active = false;
} else if (!\core_availability\info_module::is_user_visible($cm, $override->userid)) {
// User cannot access the module.
$active = false;
}
}
// Format allowsubmissionsfromdate.
if (isset($override->allowsubmissionsfromdate)) {
$fields[] = get_string('open', 'assign');
$values[] = $override->allowsubmissionsfromdate > 0 ? userdate($override->allowsubmissionsfromdate) : get_string('noopen',
'assign');
}
// Format duedate.
if (isset($override->duedate)) {
$fields[] = get_string('duedate', 'assign');
$values[] = $override->duedate > 0 ? userdate($override->duedate) : get_string('noclose', 'assign');
}
// Format cutoffdate.
if (isset($override->cutoffdate)) {
$fields[] = get_string('cutoffdate', 'assign');
$values[] = $override->cutoffdate > 0 ? userdate($override->cutoffdate) : get_string('noclose', 'assign');
}
// Icons.
$iconstr = '';
if ($active) {
// Edit.
$editurlstr = $overrideediturl->out(true, array('id' => $override->id));
$iconstr = '<a title="' . get_string('edit') . '" href="'. $editurlstr . '">' .
$OUTPUT->pix_icon('t/edit', get_string('edit')) . '</a> ';
// Duplicate.
$copyurlstr = $overrideediturl->out(true,
array('id' => $override->id, 'action' => 'duplicate'));
$iconstr .= '<a title="' . get_string('copy') . '" href="' . $copyurlstr . '">' .
$OUTPUT->pix_icon('t/copy', get_string('copy')) . '</a> ';
}
// Delete.
$deleteurlstr = $overridedeleteurl->out(true,
array('id' => $override->id, 'sesskey' => sesskey()));
$iconstr .= '<a title="' . get_string('delete') . '" href="' . $deleteurlstr . '">' .
$OUTPUT->pix_icon('t/delete', get_string('delete')) . '</a> ';
if ($groupmode) {
$usergroupstr = '<a href="' . $groupurl->out(true,
array('group' => $override->groupid)) . '" >' . $override->name . '</a>';
// Move up.
if ($override->sortorder > 1) {
$iconstr .= '<a title="'.get_string('moveup').'" href="overrides.php?cmid=' . $cmid .
'&id=' . $override->id .'&action=movegroupoverride&dir=up&sesskey='.sesskey().'">' .
$OUTPUT->pix_icon('t/up', get_string('moveup')) . '</a> ';
} else {
$iconstr .= $OUTPUT->spacer() . ' ';
}
// Move down.
if ($override->sortorder < $overridecountgroup) {
$iconstr .= '<a title="'.get_string('movedown').'" href="overrides.php?cmid='.$cmid.
'&id=' . $override->id . '&action=movegroupoverride&dir=down&sesskey='.sesskey().'">' .
$OUTPUT->pix_icon('t/down', get_string('movedown')) . '</a> ';
} else {
$iconstr .= $OUTPUT->spacer() . ' ';
}
} else {
$usergroupstr = html_writer::link($userurl->out(false,
array('id' => $override->userid, 'course' => $course->id)),
fullname($override));
}
$class = '';
if (!$active) {
$class = "dimmed_text";
$usergroupstr .= '*';
$hasinactive = true;
}
$usergroupcell = new html_table_cell();
$usergroupcell->rowspan = count($fields);
$usergroupcell->text = $usergroupstr;
$actioncell = new html_table_cell();
$actioncell->rowspan = count($fields);
$actioncell->text = $iconstr;
for ($i = 0; $i < count($fields); ++$i) {
$row = new html_table_row();
$row->attributes['class'] = $class;
if ($i == 0) {
$row->cells[] = $usergroupcell;
}
$cell1 = new html_table_cell();
$cell1->text = $fields[$i];
$row->cells[] = $cell1;
$cell2 = new html_table_cell();
$cell2->text = $values[$i];
$row->cells[] = $cell2;
if ($i == 0) {
$row->cells[] = $actioncell;
}
$table->data[] = $row;
}
}
// Output the table and button.
echo html_writer::start_tag('div', array('id' => 'assignoverrides'));
if (count($table->data)) {
echo html_writer::table($table);
}
if ($hasinactive) {
echo $OUTPUT->notification(get_string('inactiveoverridehelp', 'assign'), 'dimmed_text');
}
echo html_writer::start_tag('div', array('class' => 'buttons'));
$options = array();
if ($groupmode) {
if (empty($groups)) {
// There are no groups.
echo $OUTPUT->notification(get_string('groupsnone', 'assign'), 'error');
$options['disabled'] = true;
}
echo $OUTPUT->single_button($overrideediturl->out(true,
array('action' => 'addgroup', 'cmid' => $cm->id)),
get_string('addnewgroupoverride', 'assign'), 'post', $options);
} else {
$users = array();
// See if there are any users in the assign.
if ($accessallgroups) {
$users = get_enrolled_users($context, '', 0, 'u.id');
$nousermessage = get_string('usersnone', 'assign');
} else if ($groups) {
$enrolledjoin = get_enrolled_join($context, 'u.id');
list($ingroupsql, $ingroupparams) = $DB->get_in_or_equal(array_keys($groups), SQL_PARAMS_NAMED);
$params = $enrolledjoin->params + $ingroupparams;
$sql = "SELECT u.id
FROM {user} u
JOIN {groups_members} gm ON gm.userid = u.id
{$enrolledjoin->joins}
WHERE gm.groupid $ingroupsql
AND {$enrolledjoin->wheres}
ORDER BY $sort";
$users = $DB->get_records_sql($sql, $params);
$nousermessage = get_string('usersnone', 'assign');
} else {
$nousermessage = get_string('groupsnone', 'assign');
}
$info = new \core_availability\info_module($cm);
$users = $info->filter_user_list($users);
if (empty($users)) {
// There are no users.
echo $OUTPUT->notification($nousermessage, 'error');
$options['disabled'] = true;
}
echo $OUTPUT->single_button($overrideediturl->out(true,
array('action' => 'adduser', 'cmid' => $cm->id)),
get_string('addnewuseroverride', 'assign'), 'get', $options);
}
echo html_writer::end_tag('div');
echo html_writer::end_tag('div');
// Finish the page.
echo $OUTPUT->footer();