From 894afeeb421988448cd4abe608f620441a975b5b Mon Sep 17 00:00:00 2001
From: Martin Edenhofer <me@edenhofer.de>
Date: Fri, 16 Feb 2018 10:35:50 +0100
Subject: [PATCH] WIP.

---
 .../app/controllers/_application_controller_form.coffee   | 8 ++++----
 public/assets/tests/form.js                               | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/app/assets/javascripts/app/controllers/_application_controller_form.coffee b/app/assets/javascripts/app/controllers/_application_controller_form.coffee
index 828c8784d..7f7cc5991 100644
--- a/app/assets/javascripts/app/controllers/_application_controller_form.coffee
+++ b/app/assets/javascripts/app/controllers/_application_controller_form.coffee
@@ -460,16 +460,16 @@ class App.ControllerForm extends App.Controller
       checked = $(@).attr('checked')
       name = $(@).attr('name')
       if name && !checked && (!(name of param) || param[name] is '')
-        if uncheckParam[name] is ''
-          uncheckParam[name] = []
+        if !(name of uncheckParam)
+          uncheckParam[name] = undefined
         else
-          uncheckParam[name] = ''
+          uncheckParam[name] = []
     )
     lookupForm.find('input[type=radio]').each( (index) ->
       checked = $(@).attr('checked')
       name = $(@).attr('name')
       if name && !checked && !(name of param)
-        uncheckParam[name] = ''
+        uncheckParam[name] = undefined
     )
     for key, value of uncheckParam
       if !(key of param)
diff --git a/public/assets/tests/form.js b/public/assets/tests/form.js
index 6f3fc49f8..46d22e110 100644
--- a/public/assets/tests/form.js
+++ b/public/assets/tests/form.js
@@ -143,9 +143,9 @@ test("form params check", function() {
     active1:   true,
     active2:   false,
     checkbox1: [],
-    checkbox2: '',
+    checkbox2: undefined,
     checkbox3: 'd',
-    radiobox1: '',
+    radiobox1: undefined,
     radiobox2: 'a',
   }
   new App.ControllerForm({
@@ -291,10 +291,10 @@ test("form params check", function() {
     active1: true,
     active2: false,
     checkbox1: [],
-    checkbox2: '',
+    checkbox2: undefined,
     checkbox3: 'd',
     checkbox4: [],
-    radiobox1: '',
+    radiobox1: undefined,
     radiobox2: 'a',
   }
   deepEqual(params, test_params, 'form param check')