Customize the upload screen

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I would need to simplify the “upload new image” interface for our Authors : basically, hide a few fields that will only confuse my wordpress “authors” (like the “Description” and “Alt” text inputs). Administrators and Editors need to see these, though.

How can i implement that hiding/showing inputs according to the user’s priviledges?

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  1. You will need to hook into attachment_fields_to_edit and unset them for a role.

    You can use current_user_can('author')
    http://codex.wordpress.org/Function_Reference/current_user_can

    Example to remove image alt field

    function remove_caption($form_fields) {

  if (current_user_can('author')){
   $form_fields['image_alt']['input'] = 'hidden';
   return $form_fields;
}}
add_filter('attachment_fields_to_edit','remove_caption', 15, 2);

    My initial post used unset but I tried it and it did not work, from the example in this post: How can I remove fields in the attachment editor? , not sure why, instead the example above works using hidden.