gistfile1.txt

<?php if ( candidates_can_apply() ) : ?>
  <?php 
    $external_apply = get_post_meta( $post->ID, '_apply_link', true ); 
    if(!empty($external_apply)) {
      echo '<a class="button" target="_blank" href="'.esc_url($external_apply).'">'.esc_html__( 'Apply for job', 'workscout' ).'</a>';
    } else {
      get_job_manager_template( 'job-application.php' ); 
    }
  ?>

<?php endif; ?>