...

framework/validators/InlineValidator.php

@@ -34,6 +34,20 @@ class InlineValidator extends Validator
 	 * @var array additional parameters that are passed to the validation method
 	 */
 	public $params;
+	/**
+	 * @var string the name of the method that returns the client validation code (see [[clientValidateAttribute()]]
+	 * for details on how to return client validation code). The signature of the method should be like the following:
+	 *
+	 * ~~~
+	 * function foo($attribute)
+	 * {
+	 *     return "javascript";
+	 * }
+	 * ~~~
+	 *
+	 * where `$attribute` refers to the attribute name to be validated.
+	 */
+	public $clientValidate;
 
 	/**
 	 * Validates the attribute of the object.
@@ -45,4 +59,31 @@ class InlineValidator extends Validator
 		$method = $this->method;
 		$object->$method($attribute, $this->params);
 	}
+
+	/**
+	 * Returns the JavaScript needed for performing client-side validation.
+	 *
+	 * You may override this method to return the JavaScript validation code if
+	 * the validator can support client-side validation.
+	 *
+	 * The following JavaScript variables are predefined and can be used in the validation code:
+	 *
+	 * - `attribute`: the name of the attribute being validated.
+	 * - `value`: the value being validated.
+	 * - `messages`: an array used to hold the validation error messages for the attribute.
+	 *
+	 * @param \yii\base\Model $object the data object being validated
+	 * @param string $attribute the name of the attribute to be validated.
+	 * @return string the client-side validation script. Null if the validator does not support
+	 * client-side validation.
+	 * @see enableClientValidation
+	 * @see \yii\web\ActiveForm::enableClientValidation
+	 */
+	public function clientValidateAttribute($object, $attribute)
+	{
+		if($this->clientValidate !== null) {
+			$method = $this->clientValidate;
+			return $object->$method($attribute);
+		}
+	}
 }