Add custom success message via FORM API

[lucazdj]

Prerequisites

• I have searched for similar features requests in both open and closed tickets and cannot find a duplicate.
• The feature is still missing in the latest stable version of Elementor ( Elementor Pro )

What problem is your feature request going to solve? Please describe.

I created a custom action to use in some forms. I am trying to rendera a custom message in the form when it is submitted with success, but it is not working.

I am using the function:

public function run( $record, $ajax_handler ) {
...
$ajax_handler->add_success_message( $custom_message );
}

but the message rendered in the form is always the default. I also added some error messages, in the same way, and all of them worked.

public function run( $record, $ajax_handler ) {
...
$ajax_handler->add_error_message( $custom_message );
}

I found this issue about that, but is not resolved
#9247

Describe the solution you'd like

It would be nice if this work as intended

Describe alternatives you've considered

No response

Additional context

No response

[tjlabais]

Since there is no update on this ajax handler, you can add a custom message by code using dynamic data then use shortcode. It is dirty, but it works.

[tjlabais]

I ended up modifying the class ~/modules/forms/classes/ajax-handler.php for the original method add_success_message to work

public function send() {
	if ( $this->is_success ) {
        $success_msg = !empty($this->messages['success']) ? implode('<br>', $this->messages['success']) : $this->get_default_message(self::SUCCESS, $this->current_form['settings']);
        wp_send_json_success( [
            'message' => $success_msg,
            'data' => $this->data,
        ] );
	}