Fixes #826: cleaned up User::getReturnUrl().

framework/yii/web/User.php

@@ -10,6 +10,7 @@ namespace yii\web;
 use Yii;
 use yii\base\Component;
 use yii\base\InvalidConfigException;
+use yii\base\InvalidParamException;
 
 /**
  * User is the class for the "user" application component that manages the user authentication status.
@@ -255,20 +256,34 @@ class User extends Component
 	 * This property is usually used by the login action. If the login is successful,
 	 * the action should read this property and use it to redirect the user browser.
 	 * @param string|array $defaultUrl the default return URL in case it was not set previously.
-	 * If this is null, it means [[Application::homeUrl]] will be redirected to.
+	 * If this is null and the return URL was not set previously, [[Application::homeUrl]] will be redirected to.
-	 * Please refer to [[\yii\helpers\Html::url()]] on acceptable URL formats.
+	 * Please refer to [[setReturnUrl()]] on accepted format of the URL.
 	 * @return string the URL that the user should be redirected to after login.
 	 * @see loginRequired
 	 */
 	public function getReturnUrl($defaultUrl = null)
 	{
 		$url = Yii::$app->getSession()->get($this->returnUrlVar, $defaultUrl);
+		if (is_array($url)) {
+			if (isset($url[0])) {
+				$route = array_shift($url);
+				return Yii::$app->getUrlManager()->createUrl($route, $url);
+			} else {
+				$url = null;
+			}
+		}
 		return $url === null ? Yii::$app->getHomeUrl() : $url;
 	}
 
 	/**
 	 * @param string|array $url the URL that the user should be redirected to after login.
-	 * Please refer to [[\yii\helpers\Html::url()]] on acceptable URL formats.
+	 * If an array is given, [[UrlManager::createUrl()]] will be called to create the corresponding URL.
+	 * The first element of the array should be the route, and the rest of
+	 * the name-value pairs are GET parameters used to construct the URL. For example,
+	 *
+	 * ~~~
+	 * array('admin/index', 'ref' => 1)
+	 * ~~~
 	 */
 	public function setReturnUrl($url)
 	{