Reply To: Support Multisite options for all sites through sitemeta table

• Lucas Bustamante

• August 29, 2019 at 6:12 am

Seems I can’t edit my answer after some time. These are the filters I ended up using:

$field_key = 'foo';

add_filter( "acf/load_value/key=$field_key", function ( $original_value ) use ( $field_key ) {
    $network_value = get_site_option( $field_key, null );

    if ( ! is_null( $network_value ) ) {
        // Return the value from the "sitemeta" table, if available
        return $network_value;
    } else {
        // This will only happen if the field was never updated.
        return $original_value;
    }

} );

add_filter( "acf/update_value/key=$field_key", function ( $value ) use ( $field_key ) {
    $old_network_value = get_site_option( $field_key, null );

    // Replicate the field value to the "sitemeta" table
    if ( is_null( $old_network_value ) ) {
        add_site_option( $field_key, $value );
    } else {
        update_site_option( $field_key, $value );
    }

    $new_network_value = get_site_option( $field_key );

    return $new_network_value;
} );