fix array value

Author: mlingureanu

.idea/cakephp-filter-plugin.iml

@@ -419,7 +419,7 @@ protected function buildFilterConditions(Query $Query, $field, $options, $value)
                 }
                 break;
             default:
-                if (strlen(trim(strval($value))) == 0) {
+                if (is_array($value) || strlen(trim(strval($value))) == 0) {
                     break;
                 }