Featured image for one category

In the FAQ I describe how to do that. Here is an example for the wiki posttype. Replace with your own posttype and put it in your theme’s functions.php

function dfi_posttype_wiki ( $dfi_id, $post_id ) {
  $post = get_post($post_id);
  if ( 'wiki' === $post->post_type ) {
    return $dfi_id; // the image set in the media settings
  }
  return 0; // don't show the default featured image on other posttyes
}
add_filter( 'dfi_thumbnail_id', 'dfi_posttype_wiki', 10, 2 );

Let me know how it went.

I am so sorry. I don’t see the FAQ but thank you very much. Your code works fine.

Thank you. Regards.

Thanks for this! I was looking for a way to have the default image not used on the post types created by the time.ly calendar plugin- a mod of the code above works to use DFI only on posts:

function dfi_posttype_that ( $dfi_id, $post_id ) {
  $post = get_post($post_id);
  if ( 'post' === $post->post_type ) {
    return $dfi_id; // the image set in the media settings
  }
  return 0; // don't show the default featured image on other posttyes
}

add_filter( 'dfi_thumbnail_id', 'dfi_posttype_that', 10, 2 );