Changeset 40676 for trunk/src/wp-includes/theme.php

Timestamp:

05/16/2017 05:36:25 AM (8 years ago)

Author:

westonruter

Message:

Customize: Keep alive auto-drafts created for page/post stubs when parent changeset is updated, and delete when changeset is garbage-collected.

Props utkarshpatel, westonruter.
See #31089.
Fixes #39715.

File:

• trunk/src/wp-includes/theme.php (modified) (1 diff)

trunk/src/wp-includes/theme.php

@@ -3060 +3060 @@
     return ( $wp_customize instanceof WP_Customize_Manager ) && $wp_customize->is_preview();
 }
+
+/**
+ * Make sure that auto-draft posts get their post_date bumped to prevent premature garbage-collection.
+ *
+ * When a changeset is updated but remains an auto-draft, ensure the post_date
+ * for the auto-draft posts remains the same so that it will be
+ * garbage-collected at the same time by `wp_delete_auto_drafts()`. Otherwise,
+ * if the changeset is updated to be a draft then update the posts
+ * to have a far-future post_date so that they will never be garbage collected
+ * unless the changeset post itself is deleted.
+ *
+ * @since 4.8.0
+ * @access private
+ * @see wp_delete_auto_drafts()
+ *
+ * @param string   $new_status Transition to this post status.
+ * @param string   $old_status Previous post status.
+ * @param \WP_Post $post       Post data.
+ * @global wpdb $wpdb
+ */
+function _wp_keep_alive_customize_changeset_dependent_auto_drafts( $new_status, $old_status, $post ) {
+    global $wpdb;
+    unset( $old_status );
+
+    // Short-circuit if not a changeset or if the changeset was published.
+    if ( 'customize_changeset' !== $post->post_type || 'publish' === $new_status ) {
+        return;
+    }
+
+    if ( 'auto-draft' === $new_status ) {
+        /*
+         * Keep the post date for the post matching the changeset
+         * so that it will not be garbage-collected before the changeset.
+         */
+        $new_post_date = $post->post_date;
+    } else {
+        /*
+         * Since the changeset no longer has an auto-draft (and it is not published)
+         * it is now a persistent changeset, a long-lived draft, and so any
+         * associated auto-draft posts should have their dates
+         * pushed out very far into the future to prevent them from ever
+         * being garbage-collected.
+         */
+        $new_post_date = gmdate( 'Y-m-d H:i:d', strtotime( '+100 years' ) );
+    }
+
+    $data = json_decode( $post->post_content, true );
+    if ( empty( $data['nav_menus_created_posts']['value'] ) ) {
+        return;
+    }
+    foreach ( $data['nav_menus_created_posts']['value'] as $post_id ) {
+        if ( empty( $post_id ) || 'auto-draft' !== get_post_status( $post_id ) ) {
+            continue;
+        }
+        $wpdb->update(
+            $wpdb->posts,
+            array( 'post_date' => $new_post_date ), // Note wp_delete_auto_drafts() only looks at this this date.
+            array( 'ID' => $post_id )
+        );
+        clean_post_cache( $post_id );
+    }
+}