Fixes #1535: Improved `yii\web\User` to start session only when needed. Also…

framework/CHANGELOG.md

@@ -72,6 +72,7 @@ Yii Framework 2 Change Log
 - Enh #1476: Add yii\web\Session::handler property (nineinchnick)
 - Enh #1499: Added `ActionColumn::controller` property to support customizing the controller for handling GridView actions (qiangxue)
 - Enh #1523: Query conditions now allow to use the NOT operator (cebe)
+- Enh #1535: Improved `yii\web\User` to start session only when needed. Also prepared it for use without session. (qiangxue)
 - Enh #1562: Added `yii\bootstrap\Tabs::linkOptions` (kartik-v)
 - Enh #1572: Added `yii\web\Controller::createAbsoluteUrl()` (samdark)
 - Enh #1579: throw exception when the given AR relation name does not match in a case sensitive manner (qiangxue)

framework/web/UserEvent.php

@@ -27,6 +27,11 @@ class UserEvent extends Event
 	 */
 	public $cookieBased;
 	/**
+	 * @var integer $duration number of seconds that the user can remain in logged-in status.
+	 * If 0, it means login till the user closes the browser or the session is manually destroyed.
+	 */
+	public $duration;
+	/**
 	 * @var boolean whether the login or logout should proceed.
 	 * Event handlers may modify this property to determine whether the login or logout should proceed.
 	 * This property is only meaningful for [[User::EVENT_BEFORE_LOGIN]] and [[User::EVENT_BEFORE_LOGOUT]] events.