Ticket #20206: 20206.patch

wp-admin/includes/export.php

@@ -45 +45 @@
                 if ( ! $ptype->can_export )
                         $args['content'] = 'post';
 
+                $post_types = array( $args['content'] );
                 $where = $wpdb->prepare( "{$wpdb->posts}.post_type = %s", $args['content'] );
         } else {
                 $post_types = get_post_types( array( 'can_export' => true ) );
@@ -234 +235 @@
          *
          * @since 3.1.0
          */
-        function wxr_authors_list() {
+        function wxr_authors_list( $post_types ) {
                 global $wpdb;
 
                 $authors = array();
-                $results = $wpdb->get_results( "SELECT DISTINCT post_author FROM $wpdb->posts" );
+                $esses   = array_fill( 0, count($post_types), '%s' );
+                $results = $wpdb->get_results( $wpdb->prepare( "SELECT DISTINCT post_author FROM $wpdb->posts WHERE {$wpdb->posts}.post_type IN (" . implode( ',', $esses ) . ')', $post_types ) );
+
                 foreach ( (array) $results as $result )
                         $authors[] = get_userdata( $result->post_author );
 
@@ -337 +340 @@
         <wp:base_site_url><?php echo wxr_site_url(); ?></wp:base_site_url>
         <wp:base_blog_url><?php bloginfo_rss( 'url' ); ?></wp:base_blog_url>
 
-<?php wxr_authors_list(); ?>
+<?php wxr_authors_list( $post_types ); ?>
 
 <?php foreach ( $cats as $c ) : ?>
         <wp:category><wp:term_id><?php echo $c->term_id ?></wp:term_id><wp:category_nicename><?php echo $c->slug; ?></wp:category_nicename><wp:category_parent><?php echo $c->parent ? $cats[$c->parent]->slug : ''; ?></wp:category_parent><?php wxr_cat_name( $c ); ?><?php wxr_category_description( $c ); ?></wp:category>