Improve add-to-cart checkbox for items with max. 1 per order (Z#178704) (#2413)

src/pretix/static/pretixpresale/js/ui/main.js

@@ -634,6 +634,14 @@ $(function () {
 
     // Lightbox
     lightbox.init();
+
+    // free-range price input auto-check checkbox
+    $("[data-checked-onchange]").each(function() {
+        var checkbox = this;
+        $("#" + this.getAttribute("data-checked-onchange")).on("change", function() {
+            checkbox.checked = true;
+        });
+    });
 });
 
 function copy_answers(elements, answers) {

src/pretix/static/pretixpresale/scss/_event.scss

@@ -31,6 +31,7 @@
     }
     .item-checkbox-label {
         display: block;
+        margin-top: .4em;
     }
 
     .product-description.with-picture {