Replace wp-content in image urls wordpress

Question

I've changed my wp-content folder to a folder called stuff and am trying to change my image urls in existing posts with a function rather than a SQL query...

I've placed this in my function.php hoping it would work, but the images are still using the 'wp-content' folder?

define('WP_UPLOADSURL', 'http://' . $_SERVER['HTTP_HOST']);
add_filter( 'pre_option_upload_url_path', function( $upload_dir_uri ){
    return str_replace( WP_UPLOADSURL . '/wp-content/', WP_UPLOADSURL . '/stuff/', $upload_dir_uri );
});

Answer 1

I just needed to add the filter to the_content not the pre_option_upload_url_path .

define('WP_UPLOADSURL', 'http://' . $_SERVER['HTTP_HOST'] . '/');
add_filter( 'the_content', function( $upload_dir_uri ){
    return str_replace( WP_UPLOADSURL . '/wp-content/', WP_UPLOADSURL . '/stuff/', $upload_dir_uri ); /* Again Change stuff */
});