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Rendere i commenti WordPress GDPR compliance
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| <?php | |
| /** | |
| * aggiungo il checkbox privacy in coda di campi di default del form dei commenti | |
| * https://www.smashingmagazine.com/2012/05/adding-custom-fields-in-wordpress-comment-form/ | |
| * https://codex.wordpress.org/Function_Reference/comment_form | |
| */ | |
| add_action( 'comment_form_logged_in_after', 'comment_form_additional_fields' ); | |
| add_action( 'comment_form_after_fields', 'comment_form_additional_fields' ); | |
| function comment_form_additional_fields() { | |
| $commenter = wp_get_current_commenter(); | |
| $req = get_option( 'require_name_email' ); | |
| $aria_req = ( $req ? " aria-required='true'" : '' ); | |
| echo '<p class="privacy-container"><input id="privacy" name="privacy" type="checkbox"' . $aria_req . ' value="si"><small> <a href="' . get_theme_mod('cabi_privacy') . '">' . __('I have read the privacy policy</a> and I accept the treatment of my personal data in compliance with the Italian Legislative Decree 196/2003.') . '</small></p>'; | |
| } | |
| //salvo il valore del campo privacy come meta del commento | |
| add_action( 'comment_post', 'save_comment_form_additional_fields' ); | |
| function save_comment_form_additional_fields($comment_id) { | |
| if (isset($_POST['privacy']) && $_POST['privacy'] == 'si') { | |
| $privacy = wp_filter_nohtml_kses($_POST['privacy']); | |
| add_comment_meta($comment_id, 'privacy', $privacy); | |
| } | |
| } | |
| //impedisco il salvataggio del commento se non è stato flaggato il checkbox privacy | |
| //questa funzione è un fallback se non è attivo javascript | |
| add_filter( 'preprocess_comment', 'verify_comment_form_data' ); | |
| function verify_comment_form_data($commentdata) { | |
| if (!isset($_POST['privacy']) || $_POST['privacy'] != 'si') | |
| wp_die( __( '<strong>Error</strong>: You have to accept the privacy policy to proceed. Hit the <em>Back</em> button on your Web browser and resubmit your comment with privacy policy flag checked.' ) ); | |
| return $commentdata; | |
| } | |
| //impedisco l'invio del form dei commenti se non si flagga la checkbox privacy | |
| add_action('wp_footer','validate_privacy_comment_form_javascript'); | |
| function validate_privacy_comment_form_javascript(){ | |
| if (is_single() && comments_open()){ | |
| ?> | |
| <script type="text/javascript"> | |
| jQuery(document).ready(function($){ | |
| $(".comment-form #submit").on('click', function(e){ | |
| if (!$('#privacy').is(':checked')){ | |
| e.preventDefault(); | |
| return false; | |
| } | |
| }); | |
| }); | |
| </script> | |
| <?php | |
| } | |
| } | |
| //aggiugo un metabox al template dei commenti nel backend | |
| add_action( 'add_meta_boxes_comment', 'extend_comment_add_meta_box' ); | |
| function extend_comment_add_meta_box() { | |
| add_meta_box( 'comment_meta_box', __( 'Additional fields' ), 'extend_comment_meta_box', 'comment', 'normal', 'high' ); | |
| } | |
| //recupero i dati e li mostro nel metabox | |
| function extend_comment_meta_box($comment) { | |
| $privacy = get_comment_meta( $comment->comment_ID, 'privacy', true ); | |
| //aggiungo al metabox un campo nascosto con valore random | |
| wp_nonce_field( 'extend_comment_update', 'extend_comment_update', false ); | |
| ?> | |
| <p> | |
| <?php _e('Agreed with privacy policy') ?> | |
| <input type="checkbox" id="privacy" name="privacy" <?php if ($privacy && $privacy == 'si') echo "checked=\"checked\" value=\"{$privacy}\"" ?>> | |
| </p> | |
| <?php | |
| } | |
| //salvo i dati aggiuntivi del metabox | |
| add_action( 'edit_comment', 'save_extended_comment_data' ); | |
| function save_extended_comment_data($comment_id) { | |
| //se non ricevo il campo nascosto di sicurezza non eseguo l'aggiornamento | |
| if(!isset($_POST['extend_comment_update']) || !wp_verify_nonce($_POST['extend_comment_update'], 'extend_comment_update')) return; | |
| if (isset($_POST['privacy']) && $_POST['privacy'] == 'on') { | |
| //$privacy = wp_filter_nohtml_kses($_POST['privacy']); | |
| update_comment_meta( $comment_id, 'privacy', 'si'); | |
| } else { | |
| update_comment_meta( $comment_id, 'privacy', 'no'); | |
| } | |
| } |
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