The query-attachments AJAX action immediately errors out if the user doesn't have the upload_files cap. As such, the Customizer shouldn't show buttons that launch the media modal when the user doesn't have the proper permissions to query attachments.

See #32654.


git-svn-id: https://develop.svn.wordpress.org/trunk@32913 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/custom-background.php

@@ -259,6 +259,7 @@ class Custom_Background {
 </tr>
 <?php endif; ?>
 
+<?php if ( current_user_can( 'upload_files' ) ): ?>
 <tr>
 <th scope="row"><?php _e('Select Image'); ?></th>
 <td><form enctype="multipart/form-data" id="upload-form" class="wp-upload-form" method="post">
@@ -278,6 +279,7 @@ class Custom_Background {
 	</form>
 </td>
 </tr>
+<?php endif; ?>
 </tbody>
 </table>