Display Yii2 HttpException Message in View - php

Question

I try to handle HttpExceptions in Yii2 to Display Errormessages for Webusers. I Set everything up like here: http://www.yiiframework.com/doc-2.0/guide-runtime-handling-errors.html
Controller
namespace app\controllers;
use Yii;
use yii\web\Controller;
class SiteController extends Controller
{
public function actions()
{
return [
'error' => [
'class' => 'yii\web\ErrorAction',
],
];
}
}
public function actionError()
{
$exception = Yii::$app->errorHandler->exception;
if ($exception !== null) {
return $this->render('error', ['exception' => $exception]);
}
}
When i throw an error like this:
throw new HttpException(404,"This is an error. Maybe Page not found!");
I want to Display the Text in my view File or at least the vars described in the Docs - but alle vars are proteced or private. Any ideas how to do this?
View
$exception->statusCode // works
$exception->message // proteced

Answer 1

Firstly, you're defining the error action twice, once as a method of your siteController, and secondly in the actions method.
Your error message can be retrieved using the '$message' variable in your view file, using $exception->message is not correct.
The Yii documentation allows for these variables in your error view file;
name
message
exception

Answer 2

Try this one
$connection = \Yii::$app->db;
$transaction = $connection->beginTransaction();
try {
$model->save()
$transaction->commit();
return $this->redirect(['user/view', 'id' => $model->id]);
}catch (\Exception $e) {
$transaction->rollBack();
throw new \yii\web\HttpException(500,"YOUR MESSAGE", 405);
}

Answer 3

Not sure if you checked view file in views\site\error.php took me while to realize myself this is used to display error pages.
<?php
/* #var $this yii\web\View */
/* #var $name string */
/* #var $message string */
/* #var $exception Exception */
use yii\helpers\Html;
$this->title = $name;
?>
<div class="site-error">
<h1><?= Html::encode($this->title) ?></h1>
<div class="alert alert-danger">
<?php /* this is message you set in `HttpException` */ ?>
<?= nl2br(Html::encode($message)) ?>
</div>
<p>
<?= Yii::t('app', 'Here is text that is displayed on all error pages') ?>
</p>
</div>

Answer 4

Maybe you can try add extra content and extend the exception in Yii2 error message like this.
Just create a new custom php file called ErrorMsg.php
<?php
use Yii;
use yii\web\HttpException;
class ErrorMsg extends \Exception
{
public static function customErrorMsg($error_code,$message = null, $code = 0, \Exception $previous = null,$extra_content=NULL)
{
$httpException = new HttpException($error_code,$message,$code,$previous);
Yii::$app->response->statusCode = $error_code;
$custom_err = array(
'name'=> $httpException->getName(),
'message' => $message,
'code' => $code,
'extraContent' => $content,
'status' => $error_code,
'type' => "\\utilities\\ErrorMsg"
);
return $custom_err;
}
and call the functions wherever you want. Example
return ErrorMsg::customErrorMsg(400,"Message Here",11,NULL,"Extra Content Here");

Answer 5

If you want to get exception message directly from the exception class (Any of it, e.g. NotFoundException), you find that Exception::$message is protected property, but it has Exception::getMessage() public method, so in your error view, just call it.
<p class="message"><?= $exception->getMessage() ?></p>