ACF, CPT, Custom Admin, PHP | Type: PHPAdding a Label to the Main Editor for Custom Post Types

When a CPT relies on a lot of custom fields via ACF, the unlabeled main editor can be confusing (“What’s this for?”). This code goes in the theme’s functions file, although I put it in my evo-post-types.php MU plugin so it’s together with the rest of my CPT-specific code.

The repeated open/close PHP tags are because the script text is tricky to echo with its single and double quotes.

<?php
// ADD LABEL TO MAIN EDITOR ON SOME CPTs
add_action('admin_footer', 'add_title_to_editor');

function add_title_to_editor() {
    global $post;
    if (get_post_type($post) == 'regevents') { ?>
        <script> jQuery('<h4 class="editorlabel">Event Description/Main Content</h4>').insertBefore('#postdivrich'); </script>
    <?php }
    if (get_post_type($post) == 'exhibitions') { ?>
        <script> jQuery('<h4 class="editorlabel">Exhibition Description/Main Content</h4>').insertBefore('#postdivrich'); </script>
    <?php }
    if (get_post_type($post) == 'bizspot') { ?>
        <script> jQuery('<h4 class="editorlabel">Business Description/Main Content</h4>').insertBefore('#postdivrich'); </script>
    <?php }
}
?>

Also, you can style the label in admin-style.css:

.wp-admin h4.editorlabel { font-size:1.2em; margin:0; padding-top:1.5em; }

Enqueue the admin style sheet in the theme’s functions file:

//add admin stylesheet
add_action( 'admin_enqueue_scripts', 'load_admin_style' );
function load_admin_style() {
    wp_enqueue_style( 'admin_css', get_template_directory_uri() . '/admin-style.css', false, '1.0.0' );
} 

Reference Links

https://wordpress.stackexchange.com/questions/188480/add-a-label-to-the-editor