From b21b13641a4508a95b08b190a610b234a1d57380 Mon Sep 17 00:00:00 2001
From: Raymond Mutyaba <raymondmutyaba@gmail.com>
Date: Tue, 29 Aug 2017 17:19:30 -0700
Subject: [PATCH] With no tracks selected, set groupIds = 0 so no challenges
 are returned.

---
 src/shared/utils/challenge-listing/filter.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/shared/utils/challenge-listing/filter.js b/src/shared/utils/challenge-listing/filter.js
index 8e48d395d1..ec3d52b4c5 100644
--- a/src/shared/utils/challenge-listing/filter.js
+++ b/src/shared/utils/challenge-listing/filter.js
@@ -302,6 +302,7 @@ export function combine(...filters) {
 export function mapToBackend(filter) {
   const res = {};
   if (filter.groupIds) res.groupIds = filter.groupIds.join(',');
+  if (filter.groupIds && filter.tracks !== {}) res.groupIds = '0';
 
   /* NOTE: Right now the frontend challenge filter by tag works different,
    * it looks for matches in the challenge name OR in the techs / platforms. */