public static function delete_subscription($subscriptionorid, $checkuser = true) {
        global $DB, $USER;
        if (is_object($subscriptionorid)) {
            $subscription = $subscriptionorid;
        } else {
            $subscription = self::get_subscription($subscriptionorid);
        }
        if ($checkuser && $subscription->userid != $USER->id) {
            throw new \coding_exception('Invalid subscription supplied');
        }

        // Store the subscription before we delete it.
        $subscription = $DB->get_record('tool_monitor_subscriptions', array('id' => $subscription->id));

        $success = $DB->delete_records('tool_monitor_subscriptions', array('id' => $subscription->id));

        // If successful trigger a subscription_deleted event.
        if ($success) {
            if (!empty($subscription->courseid) &&
                    ($coursecontext = \context_course::instance($subscription->courseid, IGNORE_MISSING))) {
                $courseid = $subscription->courseid;
                $context = $coursecontext;
            } else {
                $courseid = 0;
                $context = \context_system::instance();
            }

            $params = array(
                'objectid' => $subscription->id,
                'courseid' => $courseid,
                'context' => $context
            );
            $event = \tool_monitor\event\subscription_deleted::create($params);
            $event->add_record_snapshot('tool_monitor_subscriptions', $subscription);
            $event->trigger();

            // Let's invalidate the cache.
            $cache = \cache::make('tool_monitor', 'eventsubscriptions');
            $cache->delete($courseid);
        }

        return $success;
    }
public static function delete_subscription($subscriptionorid, $checkuser = true) {
        global $DB, $USER;
        if (is_object($subscriptionorid)) {
            $subscription = $subscriptionorid;
        } else {
            $subscription = self::get_subscription($subscriptionorid);
        }
        if ($checkuser && $subscription->userid != $USER->id) {
            throw new \coding_exception('Invalid subscription supplied');
        }

        // Store the subscription before we delete it.
        $subscription = $DB->get_record('tool_monitor_subscriptions', array('id' => $subscription->id));

        $success = $DB->delete_records('tool_monitor_subscriptions', array('id' => $subscription->id));

        // If successful trigger a subscription_deleted event.
        if ($success) {
            if (!empty($subscription->courseid) &&
                    ($coursecontext = \context_course::instance($subscription->courseid, IGNORE_MISSING))) {
                $courseid = $subscription->courseid;
                $context = $coursecontext;
            } else {
                $courseid = 0;
                $context = \context_system::instance();
            }

            $params = array(
                'objectid' => $subscription->id,
                'courseid' => $courseid,
                'context' => $context
            );
            $event = \tool_monitor\event\subscription_deleted::create($params);
            $event->add_record_snapshot('tool_monitor_subscriptions', $subscription);
            $event->trigger();

            // Let's invalidate the cache.
            $cache = \cache::make('tool_monitor', 'eventsubscriptions');
            $cache->delete($courseid);
        }

        return $success;
    }
public static function delete_subscription ( $ subscriptionorid , $ checkuser = true ) { global $ DB , $ USER ; if ( is_object ( $ subscriptionorid ) ) { $ subscription = $ subscriptionorid ; } else { $ subscription = self :: get_subscription ( $ subscriptionorid ) ; } if ( $ checkuser && $ subscription -> userid != $ USER -> id ) { throw new \ coding_exception ( 'Invalid subscription supplied' ) ; } // Store the subscription before we delete it. $ subscription = $ DB -> get_record ( 'tool_monitor_subscriptions' , array ( 'id' => $ subscription -> id ) ) ; $ success = $ DB -> delete_records ( 'tool_monitor_subscriptions' , array ( 'id' => $ subscription -> id ) ) ; // If successful trigger a subscription_deleted event. if ( $ success ) { if ( ! empty ( $ subscription -> courseid ) && ( $ coursecontext = \ context_course :: instance ( $ subscription -> courseid , IGNORE_MISSING ) ) ) { $ courseid = $ subscription -> courseid ; $ context = $ coursecontext ; } else { $ courseid = 0 ; $ context = \ context_system :: instance ( ) ; } $ params = array ( 'objectid' => $ subscription -> id , 'courseid' => $ courseid , 'context' => $ context ) ; $ event = \ tool_monitor \ event \ subscription_deleted :: create ( $ params ) ; $ event -> add_record_snapshot ( 'tool_monitor_subscriptions' , $ subscription ) ; $ event -> trigger ( ) ; // Let's invalidate the cache. $ cache = \ cache :: make ( 'tool_monitor' , 'eventsubscriptions' ) ; $ cache -> delete ( $ courseid ) ; } return $ success ; }
Delete a subscription.

@param subscription|int $subscriptionorid an instance of subscription class or id.
@param bool $checkuser Check if the subscription belongs to current user before deleting.

@return bool
@throws \coding_exception if $checkuser is true and the subscription doesn't belong to the current user.
Delete a subscription .