diff options
Diffstat (limited to 'modules/book.module')
| -rw-r--r-- | modules/book.module | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/modules/book.module b/modules/book.module index 40baa5246..8009ae27e 100644 --- a/modules/book.module +++ b/modules/book.module @@ -18,7 +18,7 @@ class Book { } function book_navigation($node) { - if ($node->nid) { + if ($node->nid && $node->parent && $node->weight) { $next = db_fetch_object(db_query("SELECT n.nid, n.title FROM node n LEFT JOIN book b ON n.nid = b.nid AND n.lid = b.lid WHERE b.parent = '$node->parent' AND b.weight > $node->weight ORDER BY b.weight ASC")); $prev = db_fetch_object(db_query("SELECT n.nid, n.title FROM node n LEFT JOIN book b ON n.nid = b.nid AND n.lid = b.lid WHERE b.parent = '$node->parent' AND b.weight < $node->weight ORDER BY b.weight DESC")); } |