From de3985b007710159152edf0887adf7bc595f4c78 Mon Sep 17 00:00:00 2001
From: Stanislaw Adaszewski <s.adaszewski@gmail.com>
Date: Thu, 12 Mar 2020 19:40:11 +0100
Subject: [PATCH] Pass undefined workflow params as null.

---
 frontend/src/js/page/wb-launch-workflow-page.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/frontend/src/js/page/wb-launch-workflow-page.js b/frontend/src/js/page/wb-launch-workflow-page.js
index 0878a65..22f668a 100644
--- a/frontend/src/js/page/wb-launch-workflow-page.js
+++ b/frontend/src/js/page/wb-launch-workflow-page.js
@@ -215,7 +215,7 @@ class WBLaunchWorkflowPage extends Component {
         const { isFile } = inputSpecInfo(main.inputs.find(a => (a.id === k)));
         val = uuidsToCwl(val, isFile);
         k = k.split('/').slice(1).join('/');
-        inputs[k] = val;
+        inputs[k] = (val === undefined ? null : val);
       } catch (exc) {
         errors.push('Error parsing ' + k + ': ' + exc.message);
       }