Title: Replacement for register_trigger Last modified: May 22, 2019 --- # Replacement for register_trigger * Resolved [luminsol](https://wordpress.org/support/users/luminsol/) * (@luminsol) * [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/) * Hi, in the changelog, you mention register_trigger is renamed to notification_register_trigger. * Is there any other changes I need to make to the code? * Because calling notification_register_trigger() results in a fatal error “call to undefined function”. Viewing 11 replies - 1 through 11 (of 11 total) * Plugin Author [Kuba Mikita](https://wordpress.org/support/users/kubitomakita/) * (@kubitomakita) * [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/#post-11558037) * Yes, all the changes are in [the changelog](https://wordpress.org/plugins/notification/#developers). * You are getting this error because probably you are calling this function too early. I’d suggest hooking into [one of these actions](https://bracketspace.gitbook.io/notification/developer/general/plugin-loading-chain). * Thread Starter [luminsol](https://wordpress.org/support/users/luminsol/) * (@luminsol) * [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/#post-11558144) * Thanks. My code used to work in v5, but doesn’t behave the same in v6. * I tried to do this, but still the same issue? * ``` add_action( 'init', function() { notification_register_trigger( new my_function() ); }, 1100); ``` * Plugin Author [Kuba Mikita](https://wordpress.org/support/users/kubitomakita/) * (@kubitomakita) * [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/#post-11558155) * What’s the undefined function? `notification_register_trigger` or `my_function`? * Thread Starter [luminsol](https://wordpress.org/support/users/luminsol/) * (@luminsol) * [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/#post-11558188) * `notification_register_trigger` is undefined. * Plugin Author [Kuba Mikita](https://wordpress.org/support/users/kubitomakita/) * (@kubitomakita) * [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/#post-11558277) * Quite weird. Is the plugin active for sure? Where do you execute this code? Your plugin or theme? * Thread Starter [luminsol](https://wordpress.org/support/users/luminsol/) * (@luminsol) * [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/#post-11558520) * I’m executing the code in my plugin. * The Notification plugin is definitely active, but something very strange is going on. * To find out why, I setup a localhost environment to test. * When upgrading from v5 to v6, I see the following error: * `G'day!Since WordPress 5.2 there is a built-in feature that detects when a plugin or theme causes a fatal error on your site, and notifies you with this automated email.In this case, WordPress caught an error with one of your plugins, Notification. First, visit your website (http://localhost/testsite/) and check for any visible issues. Next, visit the page where the error was caught (http://localhost/testsite/ wp-admin/admin-ajax.php?_fs_blog_admin=true) and check for any visible issues. Please contact your host for assistance with investigating this issue further. If your site appears broken and you can't access your dashboard normally, WordPress now has a special "recovery mode". This lets you safely login to your dashboard and investigate further.http://localhost/testsite/wp-login.php?action=enter_recovery_mode& rm_token=nPL2zUI9ZTBAsL3TmC13t2&rm_key=GBwPEdAOaZ7FbU4nEMvZLOTo keep your site safe, this link will expire in 1 day. Don't worry about that, though: a new link will be emailed to you if the error occurs again after it expires.Error Details =============An error of type E_ERROR was caused in line 329 of the file D:\User\ Programs\Xampp7.2\htdocs\testsite\wp-content\plugins\notification\class\Abstracts\ Trigger.php. Error message: Uncaught Error: Class 'BracketSpace\Notification\ Admin\FieldsResolver' not found in D:\User\Programs\Xampp7.2\htdocs\testsite\ wp-content\plugins\notification\class\Abstracts\Trigger.php:329Stack trace:#0 D:\User\Programs\Xampp7.2\htdocs\testsite\wp-content\plugins\notification\class\ Abstracts\Trigger.php(429): BracketSpace\Notification\Abstracts\Trigger->resolve_fields()# 1 D:\User\Programs\Xampp7.2\htdocs\testsite\wp-includes\class-wp-hook.php(286): BracketSpace\Notification\Abstracts\Trigger->_action(Object(Plugin_Upgrader), Array)#2 D:\User\Programs\Xampp7.2\htdocs\testsite\wp-includes\class-wp-hook. php(310): WP_Hook->apply_filters(NULL, Array)#3 D:\User\Programs\Xampp7.2\htdocs\ testsite\wp-includes\plugin.php(465): WP_Hook->do_action(Array)#4 D:\User\Programs\ Xampp7.2\htdocs\testsite\wp-admin\includes\class-plugin-upgrader.php(316): do_action(' upgrader_proces...', Object(Plugin_Upgrader), Array)#5 D:\User\Programs\Xampp7.2\ htdocs\testsite\wp-admin\includes\ajax-actions.php(4191)` * After reloading the admin page, I no longer have the error message, but things don’t seem to be working. * If I try to disable a notification and come back to the notification page, it shows it’s still enabled. * To further test, I try to simulate a plugin update notification. I also enable logging, but it seems that is also broken. * `Fatal error: Uncaught Error: Call to a member function get_title() on null in D:\User\Programs\Xampp7.2\htdocs\testsite\wp-content\plugins\notification\class\ Core\Debugging.php:201 Stack trace: #0 D:\User\Programs\Xampp7.2\htdocs\testsite\ wp-includes\class-wp-hook.php(288): BracketSpace\Notification\Core\Debugging- >catch_notification(Object(BracketSpace\Notification\Defaults\Carrier\Email), Object(BracketSpace\Notification\Defaults\Trigger\Plugin\Updated)) #1 D:\User\ Programs\Xampp7.2\htdocs\testsite\wp-includes\class-wp-hook.php(310): WP_Hook- >apply_filters('', Array) #2 D:\User\Programs\Xampp7.2\htdocs\testsite\wp-includes\ plugin.php(465): WP_Hook->do_action(Array) #3 D:\User\Programs\Xampp7.2\htdocs\ testsite\wp-content\plugins\notification\class\Abstracts\Trigger.php(239): do_action(' notification/ca...', Object(BracketSpace\Notification\Defaults\Carrier\Email), Object(BracketSpace\Notification\Defaults\Trigger\Plugin\Updated), Object(BracketSpace\ Notification\Core\Notification)) #4 D:\User\Programs\Xampp in D:\User\Programs\ Xampp7.2\htdocs\testsite\wp-content\plugins\notification\class\Core\Debugging. php on line 201` * This behaviour is consistent with both my development and production site. * Let me know if there’s anything I can do to assist the debug. * Plugin Author [Kuba Mikita](https://wordpress.org/support/users/kubitomakita/) * (@kubitomakita) * [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/#post-11560376) * Thanks a lot for the detailed info! I can see you are running PHP 7.2 and latest WP, that’s great. * Do you have some old paid extensions installed? Or custom code extending the plugin? Because the `Admin\FieldsResolver` class is not used anymore and the old plugins are not compatible. * Thread Starter [luminsol](https://wordpress.org/support/users/luminsol/) * (@luminsol) * [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/#post-11562796) * No paid extensions installed. * I was only running a custom trigger, but it has been disabled. * I see it uses the “resolver” field. What do I replace it with then? * ``` class webhook_failed extends \BracketSpace\Notification\Abstracts\Trigger { public function __construct() { // Add slug and the title. parent::__construct( 'customplugin_webhook_failed', __( 'Custom Webhook Failed', 'customplugin' ) ); // Hook to the action. $this->add_action( 'customplugin_webhook_failed', 10, 3 ); } public function action($error_description, $error_code, $error_data) { $this->error_description = $error_description; $this->error_code = $error_code; $this->error_data = $error_data; } public function merge_tags() { $this->add_merge_tag( new \BracketSpace\Notification\Defaults\MergeTag\StringTag( array( 'slug' => 'error_description', 'name' => __( 'Error Description', 'customplugin' ), 'resolver' => function( $trigger ) { return $trigger->error_description; }, ) ) ); $this->add_merge_tag( new \BracketSpace\Notification\Defaults\MergeTag\StringTag( array( 'slug' => 'error_code', 'name' => __( 'Error Code/Reason', 'customplugin' ), 'resolver' => function( $trigger ) { return $trigger->error_code; }, ) ) ); $this->add_merge_tag( new \BracketSpace\Notification\Defaults\MergeTag\StringTag( array( 'slug' => 'error_data', 'name' => __( 'Error Data', 'customplugin' ), 'resolver' => function( $trigger ) { return $trigger->error_data; }, ) ) ); } } ``` - This reply was modified 7 years ago by [luminsol](https://wordpress.org/support/users/luminsol/). - This reply was modified 7 years ago by [luminsol](https://wordpress.org/support/users/luminsol/). * Plugin Author [Kuba Mikita](https://wordpress.org/support/users/kubitomakita/) * (@kubitomakita) * [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/#post-11563262) * Custom trigger looks good, but it looks like you’ve been still using old version of the plugin. * This error: `Error message: Uncaught Error: Class 'BracketSpace\Notification\ Admin\FieldsResolver' not found in D:\User\Programs\Xampp7.2\htdocs\testsite\ wp-content\plugins\notification\class\Abstracts\Trigger.php:329` * Is not related to version 6, [see this line](https://github.com/BracketSpace/Notification/blob/develop/class/Abstracts/Trigger.php#L329). * Please make sure you’ve updated the plugin and it update went successfully. * Thread Starter [luminsol](https://wordpress.org/support/users/luminsol/) * (@luminsol) * [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/#post-11563290) * The error message was shown in WP Admin when doing the upgrade from v5 to v6. * I think the upgrade process doesn’t work in all cases for some reason. * I uninstalled and reinstalled the plugin and it looks to be working now, so I’m going to mark this as resolved. * BTW, the uninstalled process didn’t completely remove the existing notifications even if was selected in the settings. Perhaps my setup had some weird issue ( both dev and production environments). * Plugin Author [Kuba Mikita](https://wordpress.org/support/users/kubitomakita/) * (@kubitomakita) * [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/#post-11563311) * Thanks a lot for confirming! * I’m putting the uninstall process check on our to-do list. Viewing 11 replies - 1 through 11 (of 11 total) The topic ‘Replacement for register_trigger’ is closed to new replies. * ![](https://ps.w.org/notification/assets/icon-256x256.gif?rev=3476901) * [Notification - Custom Notifications and Alerts for WordPress](https://wordpress.org/plugins/notification/) * [Frequently Asked Questions](https://wordpress.org/plugins/notification/#faq) * [Support Threads](https://wordpress.org/support/plugin/notification/) * [Active Topics](https://wordpress.org/support/plugin/notification/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/notification/unresolved/) * [Reviews](https://wordpress.org/support/plugin/notification/reviews/) * 11 replies * 2 participants * Last reply from: [Kuba Mikita](https://wordpress.org/support/users/kubitomakita/) * Last activity: [7 years ago](https://wordpress.org/support/topic/replacement-for-register_trigger/#post-11563311) * Status: resolved