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MDL-55547 tool_monitor: fix exceptions when course was deleted

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Delete subscriptions when course is deleted
This commit is contained in:
Marina Glancy
2017-02-20 12:11:29 +08:00
parent 9ec952f237
commit 0c30e89f34
5 changed files with 54 additions and 5 deletions
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admin/tool/monitor/classes/subscription_manager.php
+28 -2
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@@ -118,9 +118,10 @@ class subscription_manager {
// If successful trigger a subscription_deleted event.
if ($success) {
if (!empty($subscription->courseid)) {
if (!empty($subscription->courseid) &&
($coursecontext = \context_course::instance($subscription->courseid, IGNORE_MISSING))) {
$courseid = $subscription->courseid;
$context = \context_course::instance($subscription->courseid);
$context = $coursecontext;
} else {
$courseid = 0;
$context = \context_system::instance();
@@ -222,6 +223,31 @@ class subscription_manager {
return $success;
}
/**
* Delete all subscriptions in a course.
*
* This is called after a course was deleted, context no longer exists but we kept the object
*
* @param \context_course $coursecontext the context of the course
*/
public static function remove_all_subscriptions_in_course($coursecontext) {
global $DB;
// Store all the subscriptions we have to delete.
if ($subscriptions = $DB->get_records('tool_monitor_subscriptions', array('courseid' => $coursecontext->instanceid))) {
// Delete subscriptions in bulk.
$DB->delete_records('tool_monitor_subscriptions', array('courseid' => $coursecontext->instanceid));
// Trigger events one by one.
foreach ($subscriptions as $subscription) {
$params = ['objectid' => $subscription->id, 'context' => $coursecontext];
$event = \tool_monitor\event\subscription_deleted::create($params);
$event->add_record_snapshot('tool_monitor_subscriptions', $subscription);
$event->trigger();
}
}
}
/**
* Get a subscription instance for an given subscription id.
*