From 6a04610be89dbbc38ef986276c4eb476d4c2e6d7 Mon Sep 17 00:00:00 2001
From: Richard Schreiber <schreiber@rami.io>
Date: Wed, 15 Jun 2022 13:22:59 +0200
Subject: [PATCH] fix and improve auto-check js

---
 src/pretix/static/pretixpresale/js/ui/main.js | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/pretix/static/pretixpresale/js/ui/main.js b/src/pretix/static/pretixpresale/js/ui/main.js
index 256fc7cc8..d30f68f89 100644
--- a/src/pretix/static/pretixpresale/js/ui/main.js
+++ b/src/pretix/static/pretixpresale/js/ui/main.js
@@ -654,9 +654,18 @@ $(function () {
     $("[data-checked-onchange]").each(function() {
         var countInput = this;
         $("#" + this.getAttribute("data-checked-onchange")).on("change", function() {
-            if (countInput.type === "checkbox") countInput.checked = true;
-            else if (countInput.value === 0) countInput.value = 1;
-            $(countInput).trigger("change")
+            if (countInput.type === "checkbox") {
+                if (countInput.checked) return;
+                countInput.checked = true;
+            }
+            else if (countInput.type === "number" && !countInput.valueAsNumber) {
+                countInput.value = "1";
+            }
+            else {
+                return;
+            }
+            // in case of a change, trigger event
+            $(countInput).trigger("change");
         });
     });
 });