예제 #1
0
/**
 * This function will empty a course of user data.
 * It will retain the activities and the structure of the course.
 *
 * @param object $data an object containing all the settings including courseid (without magic quotes)
 * @return array status array of array component, item, error
 */
function reset_course_userdata($data)
{
    global $CFG, $DB;
    require_once $CFG->libdir . '/gradelib.php';
    require_once $CFG->libdir . '/completionlib.php';
    require_once $CFG->dirroot . '/group/lib.php';
    $data->courseid = $data->id;
    $context = context_course::instance($data->courseid);
    $eventparams = array('context' => $context, 'courseid' => $data->id, 'other' => array('reset_options' => (array) $data));
    $event = \core\event\course_reset_started::create($eventparams);
    $event->trigger();
    // Calculate the time shift of dates.
    if (!empty($data->reset_start_date)) {
        // Time part of course startdate should be zero.
        $data->timeshift = $data->reset_start_date - usergetmidnight($data->reset_start_date_old);
    } else {
        $data->timeshift = 0;
    }
    // Result array: component, item, error.
    $status = array();
    // Start the resetting.
    $componentstr = get_string('general');
    // Move the course start time.
    if (!empty($data->reset_start_date) and $data->timeshift) {
        // Change course start data.
        $DB->set_field('course', 'startdate', $data->reset_start_date, array('id' => $data->courseid));
        // Update all course and group events - do not move activity events.
        $updatesql = "UPDATE {event}\n                         SET timestart = timestart + ?\n                       WHERE courseid=? AND instance=0";
        $DB->execute($updatesql, array($data->timeshift, $data->courseid));
        // Update any date activity restrictions.
        if ($CFG->enableavailability) {
            \availability_date\condition::update_all_dates($data->courseid, $data->timeshift);
        }
        $status[] = array('component' => $componentstr, 'item' => get_string('datechanged'), 'error' => false);
    }
    if (!empty($data->reset_end_date)) {
        // If the user set a end date value respect it.
        $DB->set_field('course', 'enddate', $data->reset_end_date, array('id' => $data->courseid));
    } else {
        if ($data->timeshift > 0 && $data->reset_end_date_old) {
            // If there is a time shift apply it to the end date as well.
            $enddate = $data->reset_end_date_old + $data->timeshift;
            $DB->set_field('course', 'enddate', $enddate, array('id' => $data->courseid));
        }
    }
    if (!empty($data->reset_events)) {
        $DB->delete_records('event', array('courseid' => $data->courseid));
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteevents', 'calendar'), 'error' => false);
    }
    if (!empty($data->reset_notes)) {
        require_once $CFG->dirroot . '/notes/lib.php';
        note_delete_all($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('deletenotes', 'notes'), 'error' => false);
    }
    if (!empty($data->delete_blog_associations)) {
        require_once $CFG->dirroot . '/blog/lib.php';
        blog_remove_associations_for_course($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteblogassociations', 'blog'), 'error' => false);
    }
    if (!empty($data->reset_completion)) {
        // Delete course and activity completion information.
        $course = $DB->get_record('course', array('id' => $data->courseid));
        $cc = new completion_info($course);
        $cc->delete_all_completion_data();
        $status[] = array('component' => $componentstr, 'item' => get_string('deletecompletiondata', 'completion'), 'error' => false);
    }
    if (!empty($data->reset_competency_ratings)) {
        \core_competency\api::hook_course_reset_competency_ratings($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('deletecompetencyratings', 'core_competency'), 'error' => false);
    }
    $componentstr = get_string('roles');
    if (!empty($data->reset_roles_overrides)) {
        $children = $context->get_child_contexts();
        foreach ($children as $child) {
            $DB->delete_records('role_capabilities', array('contextid' => $child->id));
        }
        $DB->delete_records('role_capabilities', array('contextid' => $context->id));
        // Force refresh for logged in users.
        $context->mark_dirty();
        $status[] = array('component' => $componentstr, 'item' => get_string('deletecourseoverrides', 'role'), 'error' => false);
    }
    if (!empty($data->reset_roles_local)) {
        $children = $context->get_child_contexts();
        foreach ($children as $child) {
            role_unassign_all(array('contextid' => $child->id));
        }
        // Force refresh for logged in users.
        $context->mark_dirty();
        $status[] = array('component' => $componentstr, 'item' => get_string('deletelocalroles', 'role'), 'error' => false);
    }
    // First unenrol users - this cleans some of related user data too, such as forum subscriptions, tracking, etc.
    $data->unenrolled = array();
    if (!empty($data->unenrol_users)) {
        $plugins = enrol_get_plugins(true);
        $instances = enrol_get_instances($data->courseid, true);
        foreach ($instances as $key => $instance) {
            if (!isset($plugins[$instance->enrol])) {
                unset($instances[$key]);
                continue;
            }
        }
        foreach ($data->unenrol_users as $withroleid) {
            if ($withroleid) {
                $sql = "SELECT ue.*\n                          FROM {user_enrolments} ue\n                          JOIN {enrol} e ON (e.id = ue.enrolid AND e.courseid = :courseid)\n                          JOIN {context} c ON (c.contextlevel = :courselevel AND c.instanceid = e.courseid)\n                          JOIN {role_assignments} ra ON (ra.contextid = c.id AND ra.roleid = :roleid AND ra.userid = ue.userid)";
                $params = array('courseid' => $data->courseid, 'roleid' => $withroleid, 'courselevel' => CONTEXT_COURSE);
            } else {
                // Without any role assigned at course context.
                $sql = "SELECT ue.*\n                          FROM {user_enrolments} ue\n                          JOIN {enrol} e ON (e.id = ue.enrolid AND e.courseid = :courseid)\n                          JOIN {context} c ON (c.contextlevel = :courselevel AND c.instanceid = e.courseid)\n                     LEFT JOIN {role_assignments} ra ON (ra.contextid = c.id AND ra.userid = ue.userid)\n                         WHERE ra.id IS null";
                $params = array('courseid' => $data->courseid, 'courselevel' => CONTEXT_COURSE);
            }
            $rs = $DB->get_recordset_sql($sql, $params);
            foreach ($rs as $ue) {
                if (!isset($instances[$ue->enrolid])) {
                    continue;
                }
                $instance = $instances[$ue->enrolid];
                $plugin = $plugins[$instance->enrol];
                if (!$plugin->allow_unenrol($instance) and !$plugin->allow_unenrol_user($instance, $ue)) {
                    continue;
                }
                $plugin->unenrol_user($instance, $ue->userid);
                $data->unenrolled[$ue->userid] = $ue->userid;
            }
            $rs->close();
        }
    }
    if (!empty($data->unenrolled)) {
        $status[] = array('component' => $componentstr, 'item' => get_string('unenrol', 'enrol') . ' (' . count($data->unenrolled) . ')', 'error' => false);
    }
    $componentstr = get_string('groups');
    // Remove all group members.
    if (!empty($data->reset_groups_members)) {
        groups_delete_group_members($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('removegroupsmembers', 'group'), 'error' => false);
    }
    // Remove all groups.
    if (!empty($data->reset_groups_remove)) {
        groups_delete_groups($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteallgroups', 'group'), 'error' => false);
    }
    // Remove all grouping members.
    if (!empty($data->reset_groupings_members)) {
        groups_delete_groupings_groups($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('removegroupingsmembers', 'group'), 'error' => false);
    }
    // Remove all groupings.
    if (!empty($data->reset_groupings_remove)) {
        groups_delete_groupings($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteallgroupings', 'group'), 'error' => false);
    }
    // Look in every instance of every module for data to delete.
    $unsupportedmods = array();
    if ($allmods = $DB->get_records('modules')) {
        foreach ($allmods as $mod) {
            $modname = $mod->name;
            $modfile = $CFG->dirroot . '/mod/' . $modname . '/lib.php';
            $moddeleteuserdata = $modname . '_reset_userdata';
            // Function to delete user data.
            if (file_exists($modfile)) {
                if (!$DB->count_records($modname, array('course' => $data->courseid))) {
                    continue;
                    // Skip mods with no instances.
                }
                include_once $modfile;
                if (function_exists($moddeleteuserdata)) {
                    $modstatus = $moddeleteuserdata($data);
                    if (is_array($modstatus)) {
                        $status = array_merge($status, $modstatus);
                    } else {
                        debugging('Module ' . $modname . ' returned incorrect staus - must be an array!');
                    }
                } else {
                    $unsupportedmods[] = $mod;
                }
            } else {
                debugging('Missing lib.php in ' . $modname . ' module!');
            }
        }
    }
    // Mention unsupported mods.
    if (!empty($unsupportedmods)) {
        foreach ($unsupportedmods as $mod) {
            $status[] = array('component' => get_string('modulenameplural', $mod->name), 'item' => '', 'error' => get_string('resetnotimplemented'));
        }
    }
    $componentstr = get_string('gradebook', 'grades');
    // Reset gradebook,.
    if (!empty($data->reset_gradebook_items)) {
        remove_course_grades($data->courseid, false);
        grade_grab_course_grades($data->courseid);
        grade_regrade_final_grades($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('removeallcourseitems', 'grades'), 'error' => false);
    } else {
        if (!empty($data->reset_gradebook_grades)) {
            grade_course_reset($data->courseid);
            $status[] = array('component' => $componentstr, 'item' => get_string('removeallcoursegrades', 'grades'), 'error' => false);
        }
    }
    // Reset comments.
    if (!empty($data->reset_comments)) {
        require_once $CFG->dirroot . '/comment/lib.php';
        comment::reset_course_page_comments($context);
    }
    $event = \core\event\course_reset_ended::create($eventparams);
    $event->trigger();
    return $status;
}
예제 #2
0
/**
 * Reset all course grades, refetch from the activities and recalculate
 *
 * @param int $courseid The course to reset
 * @return bool success
 */
function grade_course_reset($courseid)
{
    // no recalculations
    grade_force_full_regrading($courseid);
    $grade_items = grade_item::fetch_all(array('courseid' => $courseid));
    foreach ($grade_items as $gid => $grade_item) {
        $grade_item->delete_all_grades('reset');
    }
    //refetch all grades
    grade_grab_course_grades($courseid);
    // recalculate all grades
    grade_regrade_final_grades($courseid);
    return true;
}
예제 #3
0
/**
 * This function will empty a course of user data.
 * It will retain the activities and the structure of the course.
 * @param object $data an object containing all the settings including courseid (without magic quotes)
 * @return array status array of array component, item, error
 */
function reset_course_userdata($data)
{
    global $CFG, $USER;
    require_once $CFG->libdir . '/gradelib.php';
    require_once $CFG->dirroot . '/group/lib.php';
    $data->courseid = $data->id;
    $context = get_context_instance(CONTEXT_COURSE, $data->courseid);
    // calculate the time shift of dates
    if (!empty($data->reset_start_date)) {
        // time part of course startdate should be zero
        $data->timeshift = $data->reset_start_date - usergetmidnight($data->reset_start_date_old);
    } else {
        $data->timeshift = 0;
    }
    // result array: component, item, error
    $status = array();
    // start the resetting
    $componentstr = get_string('general');
    // move the course start time
    if (!empty($data->reset_start_date) and $data->timeshift) {
        // change course start data
        set_field('course', 'startdate', $data->reset_start_date, 'id', $data->courseid);
        // update all course and group events - do not move activity events
        $updatesql = "UPDATE {$CFG->prefix}event\n                         SET timestart = timestart + ({$data->timeshift})\n                       WHERE courseid={$data->courseid} AND instance=0";
        execute_sql($updatesql, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('datechanged'), 'error' => false);
    }
    if (!empty($data->reset_logs)) {
        delete_records('log', 'course', $data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('deletelogs'), 'error' => false);
    }
    if (!empty($data->reset_events)) {
        delete_records('event', 'courseid', $data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteevents', 'calendar'), 'error' => false);
    }
    if (!empty($data->reset_notes)) {
        require_once $CFG->dirroot . '/notes/lib.php';
        note_delete_all($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('deletenotes', 'notes'), 'error' => false);
    }
    $componentstr = get_string('roles');
    if (!empty($data->reset_roles_overrides)) {
        $children = get_child_contexts($context);
        foreach ($children as $child) {
            delete_records('role_capabilities', 'contextid', $child->id);
        }
        delete_records('role_capabilities', 'contextid', $context->id);
        //force refresh for logged in users
        mark_context_dirty($context->path);
        $status[] = array('component' => $componentstr, 'item' => get_string('deletecourseoverrides', 'role'), 'error' => false);
    }
    if (!empty($data->reset_roles_local)) {
        $children = get_child_contexts($context);
        foreach ($children as $child) {
            role_unassign(0, 0, 0, $child->id);
        }
        //force refresh for logged in users
        mark_context_dirty($context->path);
        $status[] = array('component' => $componentstr, 'item' => get_string('deletelocalroles', 'role'), 'error' => false);
    }
    // First unenrol users - this cleans some of related user data too, such as forum subscriptions, tracking, etc.
    $data->unenrolled = array();
    if (!empty($data->reset_roles)) {
        foreach ($data->reset_roles as $roleid) {
            if ($users = get_role_users($roleid, $context, false, 'u.id', 'u.id ASC')) {
                foreach ($users as $user) {
                    role_unassign($roleid, $user->id, 0, $context->id);
                    if (!has_capability('moodle/course:view', $context, $user->id)) {
                        $data->unenrolled[$user->id] = $user->id;
                    }
                }
            }
        }
    }
    if (!empty($data->unenrolled)) {
        $status[] = array('component' => $componentstr, 'item' => get_string('unenrol') . ' (' . count($data->unenrolled) . ')', 'error' => false);
    }
    $componentstr = get_string('groups');
    // remove all group members
    if (!empty($data->reset_groups_members)) {
        groups_delete_group_members($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('removegroupsmembers', 'group'), 'error' => false);
    }
    // remove all groups
    if (!empty($data->reset_groups_remove)) {
        groups_delete_groups($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteallgroups', 'group'), 'error' => false);
    }
    // remove all grouping members
    if (!empty($data->reset_groupings_members)) {
        groups_delete_groupings_groups($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('removegroupingsmembers', 'group'), 'error' => false);
    }
    // remove all groupings
    if (!empty($data->reset_groupings_remove)) {
        groups_delete_groupings($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteallgroupings', 'group'), 'error' => false);
    }
    // Look in every instance of every module for data to delete
    $unsupported_mods = array();
    if ($allmods = get_records('modules')) {
        foreach ($allmods as $mod) {
            $modname = $mod->name;
            if (!count_records($modname, 'course', $data->courseid)) {
                continue;
                // skip mods with no instances
            }
            $modfile = $CFG->dirroot . '/mod/' . $modname . '/lib.php';
            $moddeleteuserdata = $modname . '_reset_userdata';
            // Function to delete user data
            if (file_exists($modfile)) {
                include_once $modfile;
                if (function_exists($moddeleteuserdata)) {
                    $modstatus = $moddeleteuserdata($data);
                    if (is_array($modstatus)) {
                        $status = array_merge($status, $modstatus);
                    } else {
                        debugging('Module ' . $modname . ' returned incorrect staus - must be an array!');
                    }
                } else {
                    $unsupported_mods[] = $mod;
                }
            } else {
                debugging('Missing lib.php in ' . $modname . ' module!');
            }
        }
    }
    // mention unsupported mods
    if (!empty($unsupported_mods)) {
        foreach ($unsupported_mods as $mod) {
            $status[] = array('component' => get_string('modulenameplural', $mod->name), 'item' => '', 'error' => get_string('resetnotimplemented'));
        }
    }
    $componentstr = get_string('gradebook', 'grades');
    // reset gradebook
    if (!empty($data->reset_gradebook_items)) {
        remove_course_grades($data->courseid, false);
        grade_grab_course_grades($data->courseid);
        grade_regrade_final_grades($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('removeallcourseitems', 'grades'), 'error' => false);
    } else {
        if (!empty($data->reset_gradebook_grades)) {
            grade_course_reset($data->courseid);
            $status[] = array('component' => $componentstr, 'item' => get_string('removeallcoursegrades', 'grades'), 'error' => false);
        }
    }
    return $status;
}
예제 #4
0
function restore_execute(&$restore, $info, $course_header, &$errorstr)
{
    global $CFG, $USER;
    $status = true;
    //Checks for the required files/functions to restore every module
    //and include them
    if ($allmods = get_records("modules")) {
        foreach ($allmods as $mod) {
            $modname = $mod->name;
            $modfile = "{$CFG->dirroot}/mod/{$modname}/restorelib.php";
            //If file exists and we have selected to restore that type of module
            if (file_exists($modfile) and !empty($restore->mods[$modname]) and $restore->mods[$modname]->restore) {
                include_once $modfile;
            }
        }
    }
    if (!defined('RESTORE_SILENTLY')) {
        //Start the main table
        echo "<table cellpadding=\"5\">";
        echo "<tr><td>";
        //Start the main ul
        echo "<ul>";
    }
    //Location of the xml file
    $xml_file = $CFG->dataroot . "/temp/backup/" . $restore->backup_unique_code . "/moodle.xml";
    //Preprocess the moodle.xml file spliting into smaller chucks (modules, users, logs...)
    //for optimal parsing later in the restore process.
    if (!empty($CFG->experimentalsplitrestore)) {
        if (!defined('RESTORE_SILENTLY')) {
            echo '<li>' . get_string('preprocessingbackupfile') . '</li>';
        }
        //First of all, split moodle.xml into handy files
        if (!restore_split_xml($xml_file, $restore)) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Error proccessing moodle.xml file. Process ended.");
            } else {
                $errorstr = "Error proccessing moodle.xml file. Process ended.";
            }
            return false;
        }
    }
    //If we've selected to restore into new course
    //create it (course)
    //Saving conversion id variables into backup_tables
    if ($restore->restoreto == RESTORETO_NEW_COURSE) {
        if (!defined('RESTORE_SILENTLY')) {
            echo '<li>' . get_string('creatingnewcourse') . '</li>';
        }
        $oldidnumber = $course_header->course_idnumber;
        if (!($status = restore_create_new_course($restore, $course_header))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Error while creating the new empty course.");
            } else {
                $errorstr = "Error while creating the new empty course.";
                return false;
            }
        }
        //Print course fullname and shortname and category
        if ($status) {
            if (!defined('RESTORE_SILENTLY')) {
                echo "<ul>";
                echo "<li>" . $course_header->course_fullname . " (" . $course_header->course_shortname . ")" . '</li>';
                echo "<li>" . get_string("category") . ": " . $course_header->category->name . '</li>';
                if (!empty($oldidnumber)) {
                    echo "<li>" . get_string("nomoreidnumber", "moodle", $oldidnumber) . "</li>";
                }
                echo "</ul>";
                //Put the destination course_id
            }
            $restore->course_id = $course_header->course_id;
        }
        if ($status = restore_open_html($restore, $course_header)) {
            if (!defined('RESTORE_SILENTLY')) {
                echo "<li>Creating the Restorelog.html in the course backup folder</li>";
            }
        }
    } else {
        $course = get_record("course", "id", $restore->course_id);
        if ($course) {
            if (!defined('RESTORE_SILENTLY')) {
                echo "<li>" . get_string("usingexistingcourse");
                echo "<ul>";
                echo "<li>" . get_string("from") . ": " . $course_header->course_fullname . " (" . $course_header->course_shortname . ")" . '</li>';
                echo "<li>" . get_string("to") . ": " . format_string($course->fullname) . " (" . format_string($course->shortname) . ")" . '</li>';
                if ($restore->deleting) {
                    echo "<li>" . get_string("deletingexistingcoursedata") . '</li>';
                } else {
                    echo "<li>" . get_string("addingdatatoexisting") . '</li>';
                }
                echo "</ul></li>";
            }
            //If we have selected to restore deleting, we do it now.
            if ($restore->deleting) {
                if (!defined('RESTORE_SILENTLY')) {
                    echo "<li>" . get_string("deletingolddata") . '</li>';
                }
                $status = remove_course_contents($restore->course_id, false) and delete_dir_contents($CFG->dataroot . "/" . $restore->course_id, "backupdata");
                if ($status) {
                    //Now , this situation is equivalent to the "restore to new course" one (we
                    //have a course record and nothing more), so define it as "to new course"
                    $restore->restoreto = RESTORETO_NEW_COURSE;
                } else {
                    if (!defined('RESTORE_SILENTLY')) {
                        notify("An error occurred while deleting some of the course contents.");
                    } else {
                        $errrostr = "An error occurred while deleting some of the course contents.";
                        return false;
                    }
                }
            }
        } else {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Error opening existing course.");
                $status = false;
            } else {
                $errorstr = "Error opening existing course.";
                return false;
            }
        }
    }
    //Now create users as needed
    if ($status and ($restore->users == 0 or $restore->users == 1)) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("creatingusers") . "<br />";
        }
        if (!($status = restore_create_users($restore, $xml_file))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not restore users.");
            } else {
                $errorstr = "Could not restore users.";
                return false;
            }
        }
        //Now print info about the work done
        if ($status) {
            $recs = get_records_sql("select old_id, new_id from {$CFG->prefix}backup_ids\n                                     where backup_code = '{$restore->backup_unique_code}' and\n                                     table_name = 'user'");
            //We've records
            if ($recs) {
                $new_count = 0;
                $exists_count = 0;
                $student_count = 0;
                $teacher_count = 0;
                $counter = 0;
                //Iterate, filling counters
                foreach ($recs as $rec) {
                    //Get full record, using backup_getids
                    $record = backup_getid($restore->backup_unique_code, "user", $rec->old_id);
                    if (strpos($record->info, "new") !== false) {
                        $new_count++;
                    }
                    if (strpos($record->info, "exists") !== false) {
                        $exists_count++;
                    }
                    if (strpos($record->info, "student") !== false) {
                        $student_count++;
                    } else {
                        if (strpos($record->info, "teacher") !== false) {
                            $teacher_count++;
                        }
                    }
                    //Do some output
                    $counter++;
                    if ($counter % 10 == 0) {
                        if (!defined('RESTORE_SILENTLY')) {
                            echo ".";
                            if ($counter % 200 == 0) {
                                echo "<br />";
                            }
                        }
                        backup_flush(300);
                    }
                }
                if (!defined('RESTORE_SILENTLY')) {
                    //Now print information gathered
                    echo " (" . get_string("new") . ": " . $new_count . ", " . get_string("existing") . ": " . $exists_count . ")";
                    echo "<ul>";
                    echo "<li>" . get_string("students") . ": " . $student_count . '</li>';
                    echo "<li>" . get_string("teachers") . ": " . $teacher_count . '</li>';
                    echo "</ul>";
                }
            } else {
                if (!defined('RESTORE_SILENTLY')) {
                    notify("No users were found!");
                }
                // no need to return false here, it's recoverable.
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo "</li>";
        }
    }
    //Now create groups as needed
    if ($status and ($restore->groups == RESTORE_GROUPS_ONLY or $restore->groups == RESTORE_GROUPS_GROUPINGS)) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("creatinggroups");
        }
        if (!($status = restore_create_groups($restore, $xml_file))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not restore groups!");
            } else {
                $errorstr = "Could not restore groups!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Now create groupings as needed
    if ($status and ($restore->groups == RESTORE_GROUPINGS_ONLY or $restore->groups == RESTORE_GROUPS_GROUPINGS)) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("creatinggroupings");
        }
        if (!($status = restore_create_groupings($restore, $xml_file))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not restore groupings!");
            } else {
                $errorstr = "Could not restore groupings!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Now create groupingsgroups as needed
    if ($status and $restore->groups == RESTORE_GROUPS_GROUPINGS) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("creatinggroupingsgroups");
        }
        if (!($status = restore_create_groupings_groups($restore, $xml_file))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not restore groups in groupings!");
            } else {
                $errorstr = "Could not restore groups in groupings!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Now create the course_sections and their associated course_modules
    //we have to do this after groups and groupings are restored, because we need the new groupings id
    if ($status) {
        //Into new course
        if ($restore->restoreto == RESTORETO_NEW_COURSE) {
            if (!defined('RESTORE_SILENTLY')) {
                echo "<li>" . get_string("creatingsections");
            }
            if (!($status = restore_create_sections($restore, $xml_file))) {
                if (!defined('RESTORE_SILENTLY')) {
                    notify("Error creating sections in the existing course.");
                } else {
                    $errorstr = "Error creating sections in the existing course.";
                    return false;
                }
            }
            if (!defined('RESTORE_SILENTLY')) {
                echo '</li>';
            }
            //Into existing course
        } else {
            if ($restore->restoreto != RESTORETO_NEW_COURSE) {
                if (!defined('RESTORE_SILENTLY')) {
                    echo "<li>" . get_string("checkingsections");
                }
                if (!($status = restore_create_sections($restore, $xml_file))) {
                    if (!defined('RESTORE_SILENTLY')) {
                        notify("Error creating sections in the existing course.");
                    } else {
                        $errorstr = "Error creating sections in the existing course.";
                        return false;
                    }
                }
                if (!defined('RESTORE_SILENTLY')) {
                    echo '</li>';
                }
                //Error
            } else {
                if (!defined('RESTORE_SILENTLY')) {
                    notify("Neither a new course or an existing one was specified.");
                    $status = false;
                } else {
                    $errorstr = "Neither a new course or an existing one was specified.";
                    return false;
                }
            }
        }
    }
    //Now create metacourse info
    if ($status and $restore->metacourse) {
        //Only to new courses!
        if ($restore->restoreto == RESTORETO_NEW_COURSE) {
            if (!defined('RESTORE_SILENTLY')) {
                echo "<li>" . get_string("creatingmetacoursedata");
            }
            if (!($status = restore_create_metacourse($restore, $xml_file))) {
                if (!defined('RESTORE_SILENTLY')) {
                    notify("Error creating metacourse in the course.");
                } else {
                    $errorstr = "Error creating metacourse in the course.";
                    return false;
                }
            }
            if (!defined('RESTORE_SILENTLY')) {
                echo '</li>';
            }
        }
    }
    //Now create categories and questions as needed
    if ($status) {
        include_once "{$CFG->dirroot}/question/restorelib.php";
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("creatingcategoriesandquestions");
            echo "<ul>";
        }
        if (!($status = restore_create_questions($restore, $xml_file))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not restore categories and questions!");
            } else {
                $errorstr = "Could not restore categories and questions!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo "</ul></li>";
        }
    }
    //Now create user_files as needed
    if ($status and $restore->user_files) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("copyinguserfiles");
        }
        if (!($status = restore_user_files($restore))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not restore user files!");
            } else {
                $errorstr = "Could not restore user files!";
                return false;
            }
        }
        //If all is ok (and we have a counter)
        if ($status and $status !== true) {
            //Inform about user dirs created from backup
            if (!defined('RESTORE_SILENTLY')) {
                echo "<ul>";
                echo "<li>" . get_string("userzones") . ": " . $status;
                echo "</li></ul>";
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Now create course files as needed
    if ($status and $restore->course_files) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("copyingcoursefiles");
        }
        if (!($status = restore_course_files($restore))) {
            if (empty($status)) {
                notify("Could not restore course files!");
            } else {
                $errorstr = "Could not restore course files!";
                return false;
            }
        }
        //If all is ok (and we have a counter)
        if ($status and $status !== true) {
            //Inform about user dirs created from backup
            if (!defined('RESTORE_SILENTLY')) {
                echo "<ul>";
                echo "<li>" . get_string("filesfolders") . ": " . $status . '</li>';
                echo "</ul>";
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo "</li>";
        }
    }
    //Now create site files as needed
    if ($status and $restore->site_files) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string('copyingsitefiles');
        }
        if (!($status = restore_site_files($restore))) {
            if (empty($status)) {
                notify("Could not restore site files!");
            } else {
                $errorstr = "Could not restore site files!";
                return false;
            }
        }
        //If all is ok (and we have a counter)
        if ($status and $status !== true) {
            //Inform about user dirs created from backup
            if (!defined('RESTORE_SILENTLY')) {
                echo "<ul>";
                echo "<li>" . get_string("filesfolders") . ": " . $status . '</li>';
                echo "</ul>";
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo "</li>";
        }
    }
    //Now create messages as needed
    if ($status and $restore->messages) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("creatingmessagesinfo");
        }
        if (!($status = restore_create_messages($restore, $xml_file))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not restore messages!");
            } else {
                $errorstr = "Could not restore messages!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo "</li>";
        }
    }
    //Now create blogs as needed
    if ($status and $restore->blogs) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("creatingblogsinfo");
        }
        if (!($status = restore_create_blogs($restore, $xml_file))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not restore blogs!");
            } else {
                $errorstr = "Could not restore blogs!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo "</li>";
        }
    }
    //Now create scales as needed
    if ($status) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("creatingscales");
        }
        if (!($status = restore_create_scales($restore, $xml_file))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not restore custom scales!");
            } else {
                $errorstr = "Could not restore custom scales!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Now create events as needed
    if ($status) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("creatingevents");
        }
        if (!($status = restore_create_events($restore, $xml_file))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not restore course events!");
            } else {
                $errorstr = "Could not restore course events!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Now create course modules as needed
    if ($status) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("creatingcoursemodules");
        }
        if (!($status = restore_create_modules($restore, $xml_file))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not restore modules!");
            } else {
                $errorstr = "Could not restore modules!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Bring back the course blocks -- do it AFTER the modules!!!
    if ($status) {
        //If we are deleting and bringing into a course or making a new course, same situation
        if ($restore->restoreto == RESTORETO_CURRENT_DELETING || $restore->restoreto == RESTORETO_EXISTING_DELETING || $restore->restoreto == RESTORETO_NEW_COURSE) {
            if (!defined('RESTORE_SILENTLY')) {
                echo '<li>' . get_string('creatingblocks');
            }
            $course_header->blockinfo = !empty($course_header->blockinfo) ? $course_header->blockinfo : NULL;
            if (!($status = restore_create_blocks($restore, $info->backup_block_format, $course_header->blockinfo, $xml_file))) {
                if (!defined('RESTORE_SILENTLY')) {
                    notify('Error while creating the course blocks');
                } else {
                    $errorstr = "Error while creating the course blocks";
                    return false;
                }
            }
            if (!defined('RESTORE_SILENTLY')) {
                echo '</li>';
            }
        }
    }
    if ($status) {
        //If we are deleting and bringing into a course or making a new course, same situation
        if ($restore->restoreto == RESTORETO_CURRENT_DELETING || $restore->restoreto == RESTORETO_EXISTING_DELETING || $restore->restoreto == RESTORETO_NEW_COURSE) {
            if (!defined('RESTORE_SILENTLY')) {
                echo '<li>' . get_string('courseformatdata');
            }
            if (!($status = restore_set_format_data($restore, $xml_file))) {
                $error = "Error while setting the course format data";
                if (!defined('RESTORE_SILENTLY')) {
                    notify($error);
                } else {
                    $errorstr = $error;
                    return false;
                }
            }
            if (!defined('RESTORE_SILENTLY')) {
                echo '</li>';
            }
        }
    }
    //Now create log entries as needed
    if ($status and $restore->logs) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("creatinglogentries");
        }
        if (!($status = restore_create_logs($restore, $xml_file))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not restore logs!");
            } else {
                $errorstr = "Could not restore logs!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Now, if all is OK, adjust the instance field in course_modules !!
    //this also calculates the final modinfo information so, after this,
    //code needing it can be used (like role_assignments. MDL-13740)
    if ($status) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("checkinginstances");
        }
        if (!($status = restore_check_instances($restore))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not adjust instances in course_modules!");
            } else {
                $errorstr = "Could not adjust instances in course_modules!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Now, if all is OK, adjust activity events
    if ($status) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("refreshingevents");
        }
        if (!($status = restore_refresh_events($restore))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not refresh events for activities!");
            } else {
                $errorstr = "Could not refresh events for activities!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Now, if all is OK, adjust inter-activity links
    if ($status) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("decodinginternallinks");
        }
        if (!($status = restore_decode_content_links($restore))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not decode content links!");
            } else {
                $errorstr = "Could not decode content links!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Now, with backup files prior to version 2005041100,
    //convert all the wiki texts in the course to markdown
    if ($status && $restore->backup_version < 2005041100) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("convertingwikitomarkdown");
        }
        if (!($status = restore_convert_wiki2markdown($restore))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not convert wiki texts to markdown!");
            } else {
                $errorstr = "Could not convert wiki texts to markdown!";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Now create gradebook as needed -- AFTER modules and blocks!!!
    if ($status) {
        if ($restore->backup_version > 2007090500) {
            if (!defined('RESTORE_SILENTLY')) {
                echo "<li>" . get_string("creatinggradebook");
            }
            if (!($status = restore_create_gradebook($restore, $xml_file))) {
                if (!defined('RESTORE_SILENTLY')) {
                    notify("Could not restore gradebook!");
                } else {
                    $errorstr = "Could not restore gradebook!";
                    return false;
                }
            }
            if (!defined('RESTORE_SILENTLY')) {
                echo '</li>';
            }
        } else {
            // for moodle versions before 1.9, those grades need to be converted to use the new gradebook
            // this code needs to execute *after* the course_modules are sorted out
            if (!defined('RESTORE_SILENTLY')) {
                echo "<li>" . get_string("migratinggrades");
            }
            /// force full refresh of grading data before migration == crete all items first
            if (!($status = restore_migrate_old_gradebook($restore, $xml_file))) {
                if (!defined('RESTORE_SILENTLY')) {
                    notify("Could not migrate gradebook!");
                } else {
                    $errorstr = "Could not migrade gradebook!";
                    return false;
                }
            }
            if (!defined('RESTORE_SILENTLY')) {
                echo '</li>';
            }
        }
        /// force full refresh of grading data after all items are created
        grade_force_full_regrading($restore->course_id);
        grade_grab_course_grades($restore->course_id);
    }
    /*******************************************************************************
     ************* Restore of Roles and Capabilities happens here ******************
     *******************************************************************************/
    // try to restore roles even when restore is going to fail - teachers might have
    // at least some role assigned - this is not correct though
    $status = restore_create_roles($restore, $xml_file) && $status;
    $status = restore_roles_settings($restore, $xml_file) && $status;
    //Now if all is OK, update:
    //   - course modinfo field
    //   - categories table
    //   - add user as teacher
    if ($status) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("checkingcourse");
        }
        //categories table
        $course = get_record("course", "id", $restore->course_id);
        fix_course_sortorder();
        // Check if the user has course update capability in the newly restored course
        // there is no need to load his capabilities again, because restore_roles_settings
        // would have loaded it anyway, if there is any assignments.
        // fix for MDL-6831
        $newcontext = get_context_instance(CONTEXT_COURSE, $restore->course_id);
        if (!has_capability('moodle/course:manageactivities', $newcontext)) {
            // fix for MDL-9065, use the new config setting if exists
            if ($CFG->creatornewroleid) {
                role_assign($CFG->creatornewroleid, $USER->id, 0, $newcontext->id);
            } else {
                if ($legacyteachers = get_roles_with_capability('moodle/legacy:editingteacher', CAP_ALLOW, get_context_instance(CONTEXT_SYSTEM))) {
                    if ($legacyteacher = array_shift($legacyteachers)) {
                        role_assign($legacyteacher->id, $USER->id, 0, $newcontext->id);
                    }
                } else {
                    notify('Could not find a legacy teacher role. You might need your moodle admin to assign a role with editing privilages to this course.');
                }
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    //Cleanup temps (files and db)
    if ($status) {
        if (!defined('RESTORE_SILENTLY')) {
            echo "<li>" . get_string("cleaningtempdata");
        }
        if (!($status = clean_temp_data($restore))) {
            if (!defined('RESTORE_SILENTLY')) {
                notify("Could not clean up temporary data from files and database");
            } else {
                $errorstr = "Could not clean up temporary data from files and database";
                return false;
            }
        }
        if (!defined('RESTORE_SILENTLY')) {
            echo '</li>';
        }
    }
    // this is not a critical check - the result can be ignored
    if (restore_close_html($restore)) {
        if (!defined('RESTORE_SILENTLY')) {
            echo '<li>Closing the Restorelog.html file.</li>';
        }
    } else {
        if (!defined('RESTORE_SILENTLY')) {
            notify("Could not close the restorelog.html file");
        }
    }
    if (!defined('RESTORE_SILENTLY')) {
        //End the main ul
        echo "</ul>";
        //End the main table
        echo "</td></tr>";
        echo "</table>";
    }
    return $status;
}
예제 #5
0
파일: moodlelib.php 프로젝트: hitphp/moodle
/**
 * This function will empty a course of user data.
 * It will retain the activities and the structure of the course.
 *
 * @param object $data an object containing all the settings including courseid (without magic quotes)
 * @return array status array of array component, item, error
 */
function reset_course_userdata($data)
{
    global $CFG, $USER, $DB;
    require_once $CFG->libdir . '/gradelib.php';
    require_once $CFG->libdir . '/completionlib.php';
    require_once $CFG->dirroot . '/group/lib.php';
    $data->courseid = $data->id;
    $context = get_context_instance(CONTEXT_COURSE, $data->courseid);
    // calculate the time shift of dates
    if (!empty($data->reset_start_date)) {
        // time part of course startdate should be zero
        $data->timeshift = $data->reset_start_date - usergetmidnight($data->reset_start_date_old);
    } else {
        $data->timeshift = 0;
    }
    // result array: component, item, error
    $status = array();
    // start the resetting
    $componentstr = get_string('general');
    // move the course start time
    if (!empty($data->reset_start_date) and $data->timeshift) {
        // change course start data
        $DB->set_field('course', 'startdate', $data->reset_start_date, array('id' => $data->courseid));
        // update all course and group events - do not move activity events
        $updatesql = "UPDATE {event}\n                         SET timestart = timestart + ?\n                       WHERE courseid=? AND instance=0";
        $DB->execute($updatesql, array($data->timeshift, $data->courseid));
        $status[] = array('component' => $componentstr, 'item' => get_string('datechanged'), 'error' => false);
    }
    if (!empty($data->reset_logs)) {
        $DB->delete_records('log', array('course' => $data->courseid));
        $status[] = array('component' => $componentstr, 'item' => get_string('deletelogs'), 'error' => false);
    }
    if (!empty($data->reset_events)) {
        $DB->delete_records('event', array('courseid' => $data->courseid));
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteevents', 'calendar'), 'error' => false);
    }
    if (!empty($data->reset_notes)) {
        require_once $CFG->dirroot . '/notes/lib.php';
        note_delete_all($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('deletenotes', 'notes'), 'error' => false);
    }
    if (!empty($data->delete_blog_associations)) {
        require_once $CFG->dirroot . '/blog/lib.php';
        blog_remove_associations_for_course($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteblogassociations', 'blog'), 'error' => false);
    }
    if (!empty($data->reset_course_completion)) {
        // Delete course completion information
        $course = $DB->get_record('course', array('id' => $data->courseid));
        $cc = new completion_info($course);
        $cc->delete_course_completion_data();
        $status[] = array('component' => $componentstr, 'item' => get_string('deletecoursecompletiondata', 'completion'), 'error' => false);
    }
    $componentstr = get_string('roles');
    if (!empty($data->reset_roles_overrides)) {
        $children = get_child_contexts($context);
        foreach ($children as $child) {
            $DB->delete_records('role_capabilities', array('contextid' => $child->id));
        }
        $DB->delete_records('role_capabilities', array('contextid' => $context->id));
        //force refresh for logged in users
        mark_context_dirty($context->path);
        $status[] = array('component' => $componentstr, 'item' => get_string('deletecourseoverrides', 'role'), 'error' => false);
    }
    if (!empty($data->reset_roles_local)) {
        $children = get_child_contexts($context);
        foreach ($children as $child) {
            role_unassign_all(array('contextid' => $child->id));
        }
        //force refresh for logged in users
        mark_context_dirty($context->path);
        $status[] = array('component' => $componentstr, 'item' => get_string('deletelocalroles', 'role'), 'error' => false);
    }
    // First unenrol users - this cleans some of related user data too, such as forum subscriptions, tracking, etc.
    $data->unenrolled = array();
    if (!empty($data->unenrol_users)) {
        $plugins = enrol_get_plugins(true);
        $instances = enrol_get_instances($data->courseid, true);
        foreach ($instances as $key => $instance) {
            if (!isset($plugins[$instance->enrol])) {
                unset($instances[$key]);
                continue;
            }
            if (!$plugins[$instance->enrol]->allow_unenrol($instance)) {
                unset($instances[$key]);
            }
        }
        $sqlempty = $DB->sql_empty();
        foreach ($data->unenrol_users as $withroleid) {
            $sql = "SELECT DISTINCT ue.userid, ue.enrolid\n                      FROM {user_enrolments} ue\n                      JOIN {enrol} e ON (e.id = ue.enrolid AND e.courseid = :courseid)\n                      JOIN {context} c ON (c.contextlevel = :courselevel AND c.instanceid = e.courseid)\n                      JOIN {role_assignments} ra ON (ra.contextid = c.id AND ra.roleid = :roleid AND ra.userid = ue.userid)";
            $params = array('courseid' => $data->courseid, 'roleid' => $withroleid, 'courselevel' => CONTEXT_COURSE);
            $rs = $DB->get_recordset_sql($sql, $params);
            foreach ($rs as $ue) {
                if (!isset($instances[$ue->enrolid])) {
                    continue;
                }
                $plugins[$instances[$ue->enrolid]->enrol]->unenrol_user($instances[$ue->enrolid], $ue->userid);
                $data->unenrolled[$ue->userid] = $ue->userid;
            }
        }
    }
    if (!empty($data->unenrolled)) {
        $status[] = array('component' => $componentstr, 'item' => get_string('unenrol', 'enrol') . ' (' . count($data->unenrolled) . ')', 'error' => false);
    }
    $componentstr = get_string('groups');
    // remove all group members
    if (!empty($data->reset_groups_members)) {
        groups_delete_group_members($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('removegroupsmembers', 'group'), 'error' => false);
    }
    // remove all groups
    if (!empty($data->reset_groups_remove)) {
        groups_delete_groups($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteallgroups', 'group'), 'error' => false);
    }
    // remove all grouping members
    if (!empty($data->reset_groupings_members)) {
        groups_delete_groupings_groups($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('removegroupingsmembers', 'group'), 'error' => false);
    }
    // remove all groupings
    if (!empty($data->reset_groupings_remove)) {
        groups_delete_groupings($data->courseid, false);
        $status[] = array('component' => $componentstr, 'item' => get_string('deleteallgroupings', 'group'), 'error' => false);
    }
    // Look in every instance of every module for data to delete
    $unsupported_mods = array();
    if ($allmods = $DB->get_records('modules')) {
        foreach ($allmods as $mod) {
            $modname = $mod->name;
            if (!$DB->count_records($modname, array('course' => $data->courseid))) {
                continue;
                // skip mods with no instances
            }
            $modfile = $CFG->dirroot . '/mod/' . $modname . '/lib.php';
            $moddeleteuserdata = $modname . '_reset_userdata';
            // Function to delete user data
            if (file_exists($modfile)) {
                include_once $modfile;
                if (function_exists($moddeleteuserdata)) {
                    $modstatus = $moddeleteuserdata($data);
                    if (is_array($modstatus)) {
                        $status = array_merge($status, $modstatus);
                    } else {
                        debugging('Module ' . $modname . ' returned incorrect staus - must be an array!');
                    }
                } else {
                    $unsupported_mods[] = $mod;
                }
            } else {
                debugging('Missing lib.php in ' . $modname . ' module!');
            }
        }
    }
    // mention unsupported mods
    if (!empty($unsupported_mods)) {
        foreach ($unsupported_mods as $mod) {
            $status[] = array('component' => get_string('modulenameplural', $mod->name), 'item' => '', 'error' => get_string('resetnotimplemented'));
        }
    }
    $componentstr = get_string('gradebook', 'grades');
    // reset gradebook
    if (!empty($data->reset_gradebook_items)) {
        remove_course_grades($data->courseid, false);
        grade_grab_course_grades($data->courseid);
        grade_regrade_final_grades($data->courseid);
        $status[] = array('component' => $componentstr, 'item' => get_string('removeallcourseitems', 'grades'), 'error' => false);
    } else {
        if (!empty($data->reset_gradebook_grades)) {
            grade_course_reset($data->courseid);
            $status[] = array('component' => $componentstr, 'item' => get_string('removeallcoursegrades', 'grades'), 'error' => false);
        }
    }
    // reset comments
    if (!empty($data->reset_comments)) {
        require_once $CFG->dirroot . '/comment/lib.php';
        comment::reset_course_page_comments($context);
    }
    return $status;
}