How do I get the URL section to show use a different domain in the WordPress Admin?

Question

I am currently using a headless WordPress with NextJS and making adjustments in custom plugin index.php file.

Within the admin, I am trying to create a better user experience for our content writers and I was able to get the post_row_actions hook to work in swapping out the the main domain...

I was also able to get the icon at the top to view the post with the new domain; however, I am unable to get the actual URL link when you click on it to use the new domain name....

The first screenshot is a popup if you click on the URL on the sidebar and that does not work.

The following code is used to adjust the top two screenshots:

function my_custom_sample_permalink($permalink) {
  $new_permalink = str_replace(home_url(), 'https://preview.domain.com', $permalink);

  // Return the modified permalink.
  return $new_permalink;
}

add_filter('get_sample_permalink', 'my_custom_sample_permalink', 10, 1);

The problem that I am having is that the link outlined in the screenshot by black marker is NOT going to the preview.domain.com page, but is showing the correct domain on the link.

Answer 1

You can use the post_link filter to do this.

Example:

function modify_post_link( $url, $post, $leavename=false ) {
  if ( $post->post_type == 'post' ) {
    $url = str_replace(home_url(), 'https://preview.domain.com', $url);
  }
  
  return $url;
}
add_filter( 'post_link', 'modify_post_link', 10, 3 );

In fact, with this you don't even need your previous filter for get_sample_permalink.