Index: src/wp-admin/admin-ajax.php =================================================================== --- src/wp-admin/admin-ajax.php (revision 38065) +++ src/wp-admin/admin-ajax.php (working copy) @@ -64,7 +64,7 @@ 'parse-media-shortcode', 'destroy-sessions', 'install-plugin', 'update-plugin', 'press-this-save-post', 'press-this-add-category', 'crop-image', 'generate-password', 'save-wporg-username', 'delete-plugin', 'search-plugins', 'search-install-plugins', 'activate-plugin', 'update-theme', 'delete-theme', - 'install-theme', 'test_url', + 'install-theme', 'test_url', 'get-post-thumbnail-html', ); // Deprecated Index: src/wp-admin/includes/ajax-actions.php =================================================================== --- src/wp-admin/includes/ajax-actions.php (revision 38065) +++ src/wp-admin/includes/ajax-actions.php (working copy) @@ -2164,6 +2164,31 @@ } /** + * Ajax handler for retrieving HTML for the featured image. + * + * @since 4.6.0 + */ +function wp_ajax_get_post_thumbnail_html() { + $post_ID = intval( $_POST['post_id'] ); + + check_ajax_referer( "update-post_$post_ID" ); + + if ( ! current_user_can( 'edit_post', $post_ID ) ) { + wp_die( -1 ); + } + + $thumbnail_id = intval( $_POST['thumbnail_id'] ); + + // For backward compatibility, -1 refers to no featured image. + if ( -1 === $thumbnail_id ) { + $thumbnail_id = null; + } + + $return = _wp_post_thumbnail_html( $thumbnail_id, $post_ID ); + wp_send_json_success( $return ); +} + +/** * Ajax handler for setting the featured image for an attachment. * * @since 4.0.0 Index: src/wp-admin/includes/post.php =================================================================== --- src/wp-admin/includes/post.php (revision 38065) +++ src/wp-admin/includes/post.php (working copy) @@ -1428,10 +1428,12 @@ $thumbnail_html ); $content .= '

' . __( 'Click the image to edit or update' ) . '

'; - $content .= '

' . esc_html( $post_type_object->labels->remove_featured_image ) . '

'; + $content .= '

' . esc_html( $post_type_object->labels->remove_featured_image ) . '

'; } } + $content .= ''; + /** * Filters the admin post thumbnail HTML markup to return. * @@ -1753,8 +1755,13 @@ $query_args['preview_id'] = $post->ID; $query_args['preview_nonce'] = wp_create_nonce( 'post_preview_' . $post->ID ); - if ( isset( $_POST['post_format'] ) ) + if ( isset( $_POST['post_format'] ) ) { $query_args['post_format'] = empty( $_POST['post_format'] ) ? 'standard' : sanitize_key( $_POST['post_format'] ); + } + + if ( isset( $_POST['_thumbnail_id'] ) ) { + $query_args['_thumbnail_id'] = ( intval( $_POST['_thumbnail_id'] ) <= 0 ) ? '-1' : intval( $_POST['_thumbnail_id'] ); + } } return get_preview_post_link( $post, $query_args ); Index: src/wp-includes/js/media-editor.js =================================================================== --- src/wp-includes/js/media-editor.js (revision 38065) +++ src/wp-includes/js/media-editor.js (working copy) @@ -657,16 +657,26 @@ settings.post.featuredImageId = id; - wp.media.post( 'set-post-thumbnail', { - json: true, + wp.media.post( 'get-post-thumbnail-html', { post_id: settings.post.id, thumbnail_id: settings.post.featuredImageId, _wpnonce: settings.post.nonce }).done( function( html ) { + if ( html == '0' ) { + window.alert( window.setPostThumbnailL10n.error ); + return; + } $( '.inside', '#postimagediv' ).html( html ); }); }, /** + * Remove the featured image id, save the post thumbnail data and + * set the HTML in the post meta box to no featured image. + */ + remove: function() { + wp.media.featuredImage.set( -1 ); + }, + /** * The Featured Image workflow * * @global wp.media.controller.FeaturedImage @@ -743,7 +753,8 @@ wp.media.featuredImage.frame().open(); }).on( 'click', '#remove-post-thumbnail', function() { - wp.media.view.settings.post.featuredImageId = -1; + wp.media.featuredImage.remove(); + return false; }); } }; Index: src/wp-includes/post.php =================================================================== --- src/wp-includes/post.php (revision 38065) +++ src/wp-includes/post.php (working copy) @@ -3260,6 +3260,16 @@ } } + // Set or remove featured image. + if ( isset( $postarr['_thumbnail_id'] ) && ( post_type_supports( $post_type, 'thumbnail' ) || 'revision' === $post_type ) ) { + $thumbnail_id = intval( $postarr['_thumbnail_id'] ); + if ( -1 === $thumbnail_id ) { + delete_post_thumbnail( $post_ID ); + } else { + set_post_thumbnail( $post_ID, $thumbnail_id ); + } + } + if ( ! empty( $postarr['meta_input'] ) ) { foreach ( $postarr['meta_input'] as $field => $value ) { update_post_meta( $post_ID, $field, $value ); Index: src/wp-includes/revision.php =================================================================== --- src/wp-includes/revision.php (revision 38065) +++ src/wp-includes/revision.php (working copy) @@ -530,6 +530,7 @@ $post->post_excerpt = $preview->post_excerpt; add_filter( 'get_the_terms', '_wp_preview_terms_filter', 10, 3 ); + add_filter( 'get_post_metadata', '_wp_preview_post_thumbnail_filter', 10, 3 ); return $post; } @@ -578,6 +579,34 @@ } /** + * Filters post thumbnail lookup to set the post thumbnail. + * + * @since 4.6.0 + * @access private + * + * @param null|array|string $value The value to return - a single metadata value, or an array of values. + * @param int $post_id Post ID. + * @param string $meta_key Meta key. + * @return null|array The default return value or the post thumbnail meta array. + */ +function _wp_preview_post_thumbnail_filter( $value, $post_id, $meta_key ) { + if ( ! $post = get_post() ) { + return $value; + } + + if ( empty( $_REQUEST['_thumbnail_id'] ) || $post->ID != $post_id || '_thumbnail_id' != $meta_key || 'revision' == $post->post_type ) { + return $value; + } + + $thumbnail_id = intval( $_REQUEST['_thumbnail_id'] ); + if ( $thumbnail_id <= 0 ) { + return ''; + } + + return strval( $thumbnail_id ); +} + +/** * Gets the post revision version. * * @since 3.6.0