dkvadratu

<?php
  //example taken from https://www.smashingmagazine.com/2011/10/how-to-use-ajax-in-wordpress/
  //generate link
  $nonce = wp_create_nonce("my_user_vote_nonce");
  $link = admin_url('admin-ajax.php?action=my_user_vote&post_id='.$post->ID.'&nonce='.$nonce);
  echo '<a class="user_vote" data-nonce="' . $nonce . '" data-post_id="' . $post->ID . '" href="' . $link . '">vote for this article</a>';

  //accept ajax action 
  add_action("wp_ajax_my_user_vote", "my_user_vote");
  add_action("wp_ajax_nopriv_my_user_vote", "my_must_login");