Fixes #6361: Added validateAttribute() to yii.activeForm.js to support manually triggering data validation of an input

framework/CHANGELOG.md

@@ -12,6 +12,7 @@ Yii Framework 2 Change Log
 - Bug #7074: `yii\data\ArrayDataProvider` did not correctly handle the case `Pagination::pageSize = 0` (kirsenn, qiangxue)
 - Enh #5663: Added support for using `data-params` to specify additional form data to be submitted via the `data-method` approach (usualdesigner, qiangxue)
 - Enh #6106: Added ability to specify `encode` for each item of `yii\widgets\Breadcrumbs` (samdark, aleksanderd)
+- Enh #6361: Added `validateAttribute()` to `yii.activeForm.js` to support manually triggering data validation of an input (Alex-Code, qiang)
 - Enh #6493: Added support for the `Access-Control-Expose-Headers` header by `yii\filters\Cors` (usualdesigner)
 - Enh #6697: Added `yii\helpers\Url::current()` method that allows adding or removing parameters from current URL (samdark, callmez)
 - Enh #6852: Added `yii\helpers\BaseHtmlPurifier::helpers()` in order to be able to configure `HtmlPurifier` helper globally via subclassing (Alex-Code)

framework/assets/yii.activeForm.js

@@ -227,6 +227,14 @@
             return attribute;
         },
 
+        // manually trigger the validation of the attribute with the specified ID
+        validateAttribute: function (id) {
+            var attribute = methods.find(id);
+            if (attribute != undefined) {
+                validateAttribute($(this), attribute, true);
+            }
+        },
+
         // find an attribute config based on the specified attribute ID
         find: function (id) {
             var attributes = $(this).data('yiiActiveForm').attributes,
@@ -251,6 +259,7 @@
             return this.data('yiiActiveForm');
         },
 
+        // validate all applicable inputs in the form
         validate: function () {
             var $form = $(this),
                 data = $form.data('yiiActiveForm'),
@@ -413,9 +422,6 @@
                 }
             });
         }
-        $input.on('forceValidate.yiiActiveForm', function() {
-            validateAttribute($form, attribute, true);
-        });
     };
 
     var unwatchAttribute = function ($form, attribute) {