Fix #8225: Fixed AJAX validation with checkboxList was only triggered on first select

framework/CHANGELOG.md

@@ -7,6 +7,7 @@ Yii Framework 2 Change Log
 - Bug #17602: `EmailValidator` with `checkDNS=true` throws `ErrorException` on bad domains on Alpine (batyrmastyr)
 - Enh #17607: Added Yii version 3 DI config compatibility (hiqsol)
 - Bug #17606: Fix error in `AssetBundle` when a disabled bundle with custom init() was still published (onmotion)
+- Bug #8225: Fixed AJAX validation with checkboxList was only triggered on first select (execut)
 - Bug #17597: PostgreSQL 12 and partitioned tables support (batyrmastyr)
 - Bug #17625: Fix boolean `data` attributes from subkeys rendering in `Html::renderTagAttributes()` (brandonkelly)
 

framework/assets/yii.activeForm.js

@@ -876,6 +876,14 @@
         var type = $input.attr('type');
         if (type === 'checkbox' || type === 'radio') {
             var $realInput = $input.filter(':checked');
+            if ($realInput.length > 1) {
+                var values = [];
+                $realInput.each(function(index) {
+                    values.push($($realInput.get(index)).val());
+                });
+                return values;
+            }
+
             if (!$realInput.length) {
                 $realInput = $form.find('input[type=hidden][name="' + $input.attr('name') + '"]');
             }

tests/js/tests/yii.activeForm.test.js

@@ -183,6 +183,28 @@ describe('yii.activeForm', function () {
                 $activeForm.yiiActiveForm('updateAttribute', inputId);
                 assert.equal('New value', eventData.value);
             });
+
+            // https://github.com/yiisoft/yii2/issues/8225
+
+            it('the value of the checkboxes must be an array', function () {
+                var inputId = 'test_checkbox';
+                var $input = $('#' + inputId);
+
+                $activeForm = $('#w1');
+                $activeForm.yiiActiveForm('destroy');
+                $activeForm.yiiActiveForm([
+                    {
+                        id: inputId,
+                        input: '#' + inputId
+                    }
+                ]).on('afterValidateAttribute', afterValidateAttributeSpy);
+
+                $input.find('input').prop('checked', true);
+                $activeForm.yiiActiveForm('updateAttribute', inputId);
+                var value = eventData.value;
+                assert.isArray(value);
+                assert.deepEqual(['1', '0'], value);
+            });
         });
 
         describe('afterValidate', function () {