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<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\web; |
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use Yii; |
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use yii\base\Action; |
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use yii\base\Exception; |
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use yii\base\UserException; |
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/** |
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* ErrorAction displays application errors using a specified view. |
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* |
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* To use ErrorAction, you need to do the following steps: |
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* |
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* First, declare an action of ErrorAction type in the `actions()` method of your `SiteController` |
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* class (or whatever controller you prefer), like the following: |
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* |
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* ```php |
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* public function actions() |
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* { |
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* return [ |
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* 'error' => ['class' => \yii\web\ErrorAction::class, |
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* ]; |
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* } |
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* ``` |
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* |
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* Then, create a view file for this action. If the route of your error action is `site/error`, then |
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* the view file should be `views/site/error.php`. In this view file, the following variables are available: |
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* |
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* - `$name`: the error name |
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* - `$message`: the error message |
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* - `$exception`: the exception being handled |
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* |
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* Finally, configure the "errorHandler" application component as follows, |
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* |
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* ```php |
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* 'errorHandler' => [ |
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* 'errorAction' => 'site/error', |
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* ] |
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* ``` |
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* |
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* @author Qiang Xue <[email protected]> |
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* @author Dmitry Naumenko <[email protected]> |
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* @since 2.0 |
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*/ |
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class ErrorAction extends Action |
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{ |
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/** |
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* @var string the view file to be rendered. If not set, it will take the value of [[id]]. |
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* That means, if you name the action as "error" in "SiteController", then the view name |
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* would be "error", and the corresponding view file would be "views/site/error.php". |
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*/ |
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public $view; |
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/** |
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* @var string the name of the error when the exception name cannot be determined. |
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* Defaults to "Error". |
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*/ |
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public $defaultName; |
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/** |
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* @var string the message to be displayed when the exception message contains sensitive information. |
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* Defaults to "An internal server error occurred.". |
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*/ |
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public $defaultMessage; |
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/** |
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* @var \Exception the exception object, normally is filled on [[init()]] method call. |
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* @see [[findException()]] to know default way of obtaining exception. |
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* @since 2.0.11 |
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*/ |
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protected $exception; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function init() |
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{ |
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$this->exception = $this->findException(); |
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if ($this->defaultMessage === null) { |
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$this->defaultMessage = Yii::t('yii', 'An internal server error occurred.'); |
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} |
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if ($this->defaultName === null) { |
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$this->defaultName = Yii::t('yii', 'Error'); |
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} |
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} |
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/** |
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* Runs the action. |
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* |
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* @return string result content |
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*/ |
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public function run() |
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{ |
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Yii::$app->getResponse()->setStatusCodeByException($this->exception); |
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if (Yii::$app->getRequest()->getIsAjax()) { |
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return $this->renderAjaxResponse(); |
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} |
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return $this->renderHtmlResponse(); |
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} |
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/** |
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* Builds string that represents the exception. |
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* Normally used to generate a response to AJAX request. |
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* @return string |
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* @since 2.0.11 |
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*/ |
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protected function renderAjaxResponse() |
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{ |
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return $this->getExceptionName() . ': ' . $this->getExceptionMessage(); |
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} |
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/** |
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* Renders a view that represents the exception. |
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* @return string |
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* @since 2.0.11 |
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*/ |
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protected function renderHtmlResponse() |
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{ |
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return $this->controller->render($this->view ?: $this->id, $this->getViewRenderParams()); |
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} |
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/** |
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* Builds array of parameters that will be passed to the view. |
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* @return array |
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* @since 2.0.11 |
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*/ |
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protected function getViewRenderParams() |
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{ |
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return [ |
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'name' => $this->getExceptionName(), |
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'message' => $this->getExceptionMessage(), |
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'exception' => $this->exception, |
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]; |
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} |
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/** |
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* Gets exception from the [[yii\web\ErrorHandler|ErrorHandler]] component. |
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* In case there is no exception in the component, treat as the action has been invoked |
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* not from error handler, but by direct route, so '404 Not Found' error will be displayed. |
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* @return \Exception |
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* @since 2.0.11 |
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*/ |
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protected function findException() |
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{ |
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if (($exception = Yii::$app->getErrorHandler()->exception) === null) { |
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$exception = new NotFoundHttpException(Yii::t('yii', 'Page not found.')); |
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} |
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return $exception; |
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} |
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/** |
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* Gets the code from the [[exception]]. |
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* @return mixed |
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* @since 2.0.11 |
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*/ |
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protected function getExceptionCode() |
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{ |
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if ($this->exception instanceof HttpException) { |
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return $this->exception->statusCode; |
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} |
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return $this->exception->getCode(); |
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} |
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/** |
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* Returns the exception name, followed by the code (if present). |
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* |
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* @return string |
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* @since 2.0.11 |
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*/ |
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protected function getExceptionName() |
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{ |
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if ($this->exception instanceof Exception) { |
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$name = $this->exception->getName(); |
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} else { |
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$name = $this->defaultName; |
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} |
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if ($code = $this->getExceptionCode()) { |
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$name .= " (#$code)"; |
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} |
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return $name; |
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} |
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/** |
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* Returns the [[exception]] message for [[yii\base\UserException]] only. |
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* For other cases [[defaultMessage]] will be returned. |
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* @return string |
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* @since 2.0.11 |
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*/ |
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protected function getExceptionMessage() |
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{ |
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if ($this->exception instanceof UserException) { |
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return $this->exception->getMessage(); |
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} |
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return $this->defaultMessage; |
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} |
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} |
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yiisoft /
yii2
