Fix #18386: Fix `assets/yii.activeForm.js` incorrect target selector for `validatingCssClass`

framework/CHANGELOG.md

@@ -4,6 +4,7 @@ Yii Framework 2 Change Log
 2.0.40 under development
 ------------------------
 
+- Bug #18386: Fix `assets/yii.activeForm.js` incorrect target selector for `validatingCssClass` (brussens)
 - Enh #18381: The `yii\web\AssetManager` `$basePath` readable and writeable check has been moved to the `checkBasePathPermission()`. This check will run once before `publishFile()` and `publishDirectory()` (nadar)
 - Bug #18199: Fix content body response on 304 HTTP status code, according to RFC 7232 (rad8329)
 - Enh #18394: Add support for setting `yii\web\Response::$stream` to a callable (brandonkelly)

framework/assets/yii.activeForm.js

@@ -569,7 +569,13 @@
             $.each(data.attributes, function () {
                 if (this.status === 2) {
                     this.status = 3;
-                    $form.find(this.container).addClass(data.settings.validatingCssClass);
+
+                    var $container = $form.find(this.container),
+                        $input = findInput($form, this);
+
+                    var $errorElement = data.settings.validationStateOn === 'input' ? $input : $container;
+
+                    $errorElement.addClass(data.settings.validatingCssClass);
                 }
             });
             methods.validate.call($form);
@@ -917,4 +923,4 @@
             $form.find(attribute.input).attr('aria-invalid', hasError ? 'true' : 'false');
         }
     }
-})(window.jQuery);
+})(window.jQuery);