[ADD DATA API] WP Rest API - How to get featured image, thêm một trườngvào api /wp/v2/posts

https://wordpress.stackexchange.com/questions/231137/wp-rest-api-how-to-get-featured-image

function post_featured_image_json( $data, $post, $context ) {
  $data->data['featured_image_url'] = 'https://app.yp.vn/wp-content/uploads/2020/06/1-07.jpg';
  return $data;
}
add_filter( 'rest_prepare_post', 'post_featured_image_json', 10, 3 );