How can I redirect to a specific page when the database connection fails in Yii?

I do not want to see Yii er开发者_StackOverflow社区ror message when the database connection fails. How can I redirect to a specific page when the database connection fails with Yii framework? Thanks.

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To catch all CDbConnection errors you need to enable an error handler in config/main.php

'components'=>array('errorHandler'=>array('errorAction'=>'site/error', ), ),

Then, within your controller (or an abstract base class for all your controllers) you need define an action to accomplish the redirect.

public function actionError() {
    if($error=Yii::app()->errorHandler->error)
        if ( CDbException == $error->type) {
           $this->redirect(array("site/error_message")); }
    //  call the parent error handler, but something doesn't feel right about this:
    else
        parent::actionError(); }

Alternatively you can just render your custom views:

public function actionError() {
    if($error=Yii::app()->errorHandler->error)
        if ( CDbException == $error->type) {
           $this->render('error', $error); } }

See Yii docs for more details.

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you can do something like:

try { 
    $connection=new CDbConnection($dsn,$username,$password);
} catch(Exception $e) {
    $this->redirect(array('controller/action'));
}

you can also pass additional info with the redirect, see here.