dynamic db config

database/db.php

@@ -1,6 +1,6 @@
 <?php
 $dbconn = null;
-if(!getenv('DATABASE_URL')){
+if(getenv('DATABASE_URL')){
     $connectionConfig = parse_url(getenv('DATABASE_URL'));
     $host = $connectionConfig['host'];
     $user = $connectionConfig['user'];