Adds support for "multiple choice" field

InvenTree/common/serializers.py

@@ -32,7 +32,15 @@ class SettingsSerializer(InvenTreeModelSerializer):
         Returns the choices available for a given item
         """
 
-        return obj.choices()
+        results = []
+
+        for choice in obj.choices():
+            results.append({
+                'value': choice[0],
+                'display_name': choice[1],
+            })
+
+        return results
 
 
 class GlobalSettingsSerializer(SettingsSerializer):

InvenTree/templates/js/dynamic/settings.js

@@ -39,7 +39,11 @@ function editSetting(pk, options={}) {
     // First, read the settings object from the server
     inventreeGet(url, {}, {
         success: function(response) {
-            
+    
+            if (response.choices && response.choices.length > 0) {
+                response.type = 'choice';
+            }
+
             // Construct the field 
             var fields = {
                 value: {