I'm making a custom theme in 3.1 and want to add thumbnails to my posts on the index. I've tried using the functions.php method, but once I've done that I do not get the option to add a thumbnail when editing or creating a post.
Is this method outdated in 3.1 ? If so:
- How do I add a thumbnail then?
- How can I style the thumbnail element, if I do not need to call it in index.php anymore ?