lib: Don't render empty filters to SQL

Else we are presented with syntax errors. fixes #9211
Icinga · May 22, 2015 · 83a6e85 · 83a6e85
1 parent 01b453e
commit 83a6e85
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/library/Icinga/Data/Db/DbQuery.php b/library/Icinga/Data/Db/DbQuery.php
@@ -166,10 +166,12 @@ protected function renderFilter($filter, $level = 0)
                         $parts[] = $filterPart;
                     }
                 }
-                if ($level > 0) {
-                    $str .= ' (' . implode($op, $parts) . ') ';
-                } else {
-                    $str .= implode($op, $parts);
+                if (! empty($parts)) {
+                    if ($level > 0) {
+                        $str .= ' (' . implode($op, $parts) . ') ';
+                    } else {
+                        $str .= implode($op, $parts);
+                    }
                 }
             }
         } else {