From dc959e15f4e6128ffa91d9d7a24b59a5a9cf7332 Mon Sep 17 00:00:00 2001
From: pietervdvn <pietervdvn@posteo.net>
Date: Mon, 14 Feb 2022 15:59:42 +0100
Subject: [PATCH] Fix filter selection for one option

---
 Logic/Web/QueryParameters.ts       | 2 +-
 Models/ThemeConfig/FilterConfig.ts | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/Logic/Web/QueryParameters.ts b/Logic/Web/QueryParameters.ts
index 489b14cb35..a268cb8d22 100644
--- a/Logic/Web/QueryParameters.ts
+++ b/Logic/Web/QueryParameters.ts
@@ -71,7 +71,7 @@ export class QueryParameters {
                 QueryParameters.knownSources[key] = source;
             }
         }
-
+        
     }
 
     private static Serialize() {
diff --git a/Models/ThemeConfig/FilterConfig.ts b/Models/ThemeConfig/FilterConfig.ts
index e38b645cae..264598cf97 100644
--- a/Models/ThemeConfig/FilterConfig.ts
+++ b/Models/ThemeConfig/FilterConfig.ts
@@ -18,7 +18,7 @@ export default class FilterConfig {
         originalTagsSpec: string | AndOrTagConfigJson
         fields: { name: string, type: string }[]
     }[];
-    public readonly defaultSelection : number
+    public readonly defaultSelection? : number
 
     constructor(json: FilterConfigJson, context: string) {
         if (json.options === undefined) {
@@ -79,7 +79,7 @@ export default class FilterConfig {
             return {question: question, osmTags: osmTags, fields, originalTagsSpec: option.osmTags};
         });
         
-        this.defaultSelection = defaultSelection ?? 0
+        this.defaultSelection = defaultSelection 
 
         if (this.options.some(o => o.fields.length > 0) && this.options.length > 1) {
             throw `Invalid filter at ${context}: a filter with textfields should only offer a single option.`
@@ -103,10 +103,10 @@ export default class FilterConfig {
 
         let defaultValue = ""
         if(this.options.length > 1){
-            defaultValue = ""+this.defaultSelection 
+            defaultValue = ""+(this.defaultSelection ?? 0)
         }else{
             // Only a single option
-            if(this.defaultSelection > 0){
+            if(this.defaultSelection === 0){
                 defaultValue = "true"
             }
         }