fixed wrong client validation issue in numbervalidator

fixes #3118

framework/CHANGELOG.md

@@ -11,6 +11,7 @@ Yii Framework 2 Change Log
 - Bug #3042: `yii\widgets\Pjax` should end application right after it finishes responding to a pjax request (qiangxue)
 - Bug #3066: `yii\db\mssql\Schema::getTableSchema()` should return null when the table does not exist (qiangxue)
 - Bug #3091: Fixed inconsistent treatment of `Widget::run()` when a widget is used as a container and as a self-contained object (qiangxue)
+- Bug #3118: Ensure client validation has the same behavior as server side validation for number validator (cebe)
 - Bug #3121: `yii\base\Application::bootstrap` may fail to load some components if they are specified as class names (qiangxue)
 - Bug #3125: `yii\console\controllers\AssetController` now respects data URL resources (klimov-paul)
 - Bug #3128: Fixed the bug that `defaultRoles` set in RBAC manager was not working as specified (qiangxue)

framework/validators/NumberValidator.php

@@ -128,14 +128,18 @@ class NumberValidator extends Validator
         ];
 
         if ($this->min !== null) {
-            $options['min'] = $this->min;
+            // ensure numeric value to make javascript comparison equal to PHP comparison
+            // https://github.com/yiisoft/yii2/issues/3118
+            $options['min'] = is_string($this->min) ? (float)$this->min : $this->min;
             $options['tooSmall'] = Yii::$app->getI18n()->format($this->tooSmall, [
                 'attribute' => $label,
                 'min' => $this->min,
             ], Yii::$app->language);
         }
         if ($this->max !== null) {
-            $options['max'] = $this->max;
+            // ensure numeric value to make javascript comparison equal to PHP comparison
+            // https://github.com/yiisoft/yii2/issues/3118
+            $options['max'] = is_string($this->max) ? (float)$this->max : $this->max;
             $options['tooBig'] = Yii::$app->getI18n()->format($this->tooBig, [
                 'attribute' => $label,
                 'max' => $this->max,