WP Job Manager: Test new filter for job dashboard actions which allows success message

new-dashboard-action.php

<?php

namespace JobManager;


add_filter( 'job_manager_my_job_actions', __NAMESPACE__ . '\\add_expire_action', 10, 2 );
function add_expire_action( $actions, $job_id ) {

	if ( ! function_exists( __NAMESPACE__ . '\\handle_expire_action' ) ) {
		return $actions;
	}

	$job = get_post( $job_id );
	if ( $job->post_status === 'publish' ) {
		$actions['expire'] = array(
			'label' => __( 'Expire', 'wp-job-manager' ),
			'nonce' => true
		);
	}

	return $actions;
}

add_filter( 'job_manager_job_dashboard_do_action', __NAMESPACE__ . '\\handle_expire_action', 10, 3 );
function handle_expire_action( $success_message, $action, $job_id ) {

	if ( $action !== 'expire' ) {
		return $success_message;
	}

	$job = get_post( $job_id );

	// Check status
	if ( $job->post_status === 'expired' ) {
		throw new \Exception( __( 'This job is already expired.', 'wp-job-manager' ) );
	}

	// Update
	$job->post_status = 'expired';
	$updated          = wp_update_post( $job );
	if ( ! $updated || is_wp_error( $updated ) ) {
		throw new  \Exception( __( 'Job could not be changed.', 'wp-job-manager' ) );
	}

	// Message
	return sprintf( __( '%s has expired', 'jobwrk' ), wpjm_get_the_job_title( $job ) );
}

I'm so sorry… but I can't find the time right now to check this out again.
Good luck!