Fix für titellose Posts in WordPress, für SEO, GEO, und Social Media

// Shared function for title-less posts in certain categories
function mb_title_for_titleless_notes( $title ) {

    if ( ! is_singular( 'post' ) ) {
        return $title;
    }

    global $post;

    // Only act if the post has no title
    if ( trim( $post->post_title ) !== '' ) {
        return $title;
    }

    // Get categories
    $categories = get_the_category( $post->ID );
    if ( empty( $categories ) ) {
        return $title;
    }

    // Allowed categories
    $allowed = [ 'macht', 'notiert', 'liest', 'hoert', 'schaut', 'spielt' ];
    $matched_category = null;

    foreach ( $categories as $cat ) {
        if ( in_array( $cat->slug, $allowed, true ) ) {
            $matched_category = $cat;
            break;
        }
    }

    if ( ! $matched_category ) {
        return $title;
    }

    // Build replacement title
    $date = get_the_date( 'j. F Y, G:i', $post ); // German 
    $category_name = $matched_category->name;

    // Example: "Notiert: 9. Januar 2026, 9:46 Uhr - Mario Breskic"
    return sprintf(
        '%s: %s Uhr - Mario Breskic',
        $category_name,
        $date
    );
}

// HTML <title>
add_filter( 'wpseo_title', 'mb_title_for_titleless_notes', 20 );

// Open Graph <meta property="og:title">
add_filter( 'wpseo_opengraph_title', 'mb_title_for_titleless_notes', 20 );

// Twitter <meta name="twitter:title">
add_filter( 'wpseo_twitter_title', 'mb_title_for_titleless_notes', 20 );
// Built with ChatGPT