/**
* Register meta so WordPress stores, sanitises and exposes it in the
* Block Editor sidebar (no extra JS required).
*/
foreach ( [ 'og_title', 'og_description', 'og_image' ] as $key ) {
register_post_meta( '', $key, [
'show_in_rest' => true, // Gutenberg UI
'single' => true,
'type' => 'string',
'auth_callback'=> '__return_true', // authors & up
] );
}
/**
* 2️⃣ Output one canonical set of OG / Twitter tags early in .
*/
add_action( 'wp_head', function () {
if ( ! is_singular() ) { return; }
$id = get_queried_object_id();
// author-editable values, with automatic fall-backs
$title = get_post_meta( $id, 'og_title', true ) ?: single_post_title( '', false );
$desc = get_post_meta( $id, 'og_description', true )?: wp_strip_all_tags( get_the_excerpt() );
$img = get_post_meta( $id, 'og_image', true )
?: ( has_post_thumbnail( $id ) ? get_the_post_thumbnail_url( $id, 'full' ) : '' );
printf(
"\n\n".
''."\n".
''."\n".
''."\n".
( $img ? ''."\n" : '' ).
''."\n",
esc_attr( $title ),
esc_attr( $desc )
);
}, 5 ); // priority 5 → runs before most themes/plugins