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April 2, 2022 16:50
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Add subtitle to wordpress pages, just after the title field nd before the content editor
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| /* | |
| add to functions.php | |
| then get the subtitle with the_subtitle() or get_the_subtitle() functions | |
| */ | |
| /* add subtitles */ | |
| add_action( "admin_footer-post.php", 'move_subtitle_after_title' ); | |
| add_action( "admin_footer-post-new.php", 'move_subtitle_after_title' ); | |
| function move_subtitle_after_title() | |
| { | |
| // Check post type | |
| if( | |
| 'page' != get_post_type() | |
| && 'post' != get_post_type() | |
| // add custom types | |
| ) | |
| return; | |
| ?> | |
| <script type="text/javascript"> | |
| jQuery(document).ready( function($) | |
| { | |
| $( '#custom_subtitle_metabox .inside' ).insertAfter( '#titlewrap' ); | |
| $( '#custom_subtitle_metabox' ).css( 'display', 'none' ); | |
| }); | |
| </script> | |
| <?php | |
| } | |
| function custom_add_meta_boxes_page() { | |
| add_meta_box('custom_subtitle_metabox', 'Sottotitolo', 'custom_subtitle_metabox', '', 'normal', 'high'); | |
| } | |
| add_action( 'add_meta_boxes_page', 'custom_add_meta_boxes_page' ); | |
| add_action( 'add_meta_boxes_post', 'custom_add_meta_boxes_page' ); | |
| // add custom types | |
| function custom_subtitle_metabox() { | |
| global $post; | |
| wp_nonce_field( 'custom_subtitle', 'custom_subtitle_nonce' ); ## Create nonce | |
| $subtitle = get_post_meta($post->ID, 'subtitle', true); ## Get the subtitle | |
| ?> | |
| <p> | |
| <label for="sub_title">Sottotitolo</label> | |
| <input type="text" name="subtitle" id="subtitle" class="widefat" value="<?= esc_attr( $subtitle ); ?>" /> | |
| </p> | |
| <?php | |
| } | |
| function custom_subtitle_save_meta( $post_id ) { | |
| global $post; | |
| if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) | |
| return false; ## Block if doing autosave | |
| if( !isset($_POST['custom_subtitle_nonce']) ) | |
| return false; | |
| if ( !current_user_can( 'edit_post', $post_id ) ) | |
| return $post_id; ## Block if user doesn't have priv | |
| if ( !wp_verify_nonce( $_POST['custom_subtitle_nonce'], 'custom_subtitle' )) { | |
| echo 'nonce non valido'; | |
| } elseif( isset( $_POST['subtitle'] ) ) { | |
| update_post_meta($post_id, 'subtitle', $_POST['subtitle']); | |
| } | |
| return false; | |
| } | |
| add_action( 'save_post', 'custom_subtitle_save_meta' ); | |
| add_action( 'publish_post', 'custom_subtitle_save_meta' ); | |
| add_action( 'draft_post', 'custom_subtitle_save_meta' ); | |
| add_action( 'future_post', 'custom_subtitle_save_meta' ); | |
| add_action( 'pre_post_update', 'custom_subtitle_save_meta' ); | |
| function the_subtitle( $before, $after, $echo ) | |
| { | |
| $subtitle = $before . get_post_meta(get_the_ID(), 'subtitle', true) . $after; | |
| if($echo) echo $subtitle; | |
| else return $subtitle; | |
| } | |
| function get_the_subtitle() | |
| { | |
| return the_subtitle( '', '', false ); | |
| } |
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