Yii1 Set Flash - PHP

Yii1 is a popular PHP framework that provides various features to simplify web application development. One of the essential features of Yii1 is the ability to set flash messages. Flash messages are temporary messages that you can use to display success or error messages to users for a brief period.

How to Set Flash Messages in Yii1

To set flash messages in Yii1, you can use the setFlash() method provided by the CController class. Here is an example of how to set a flash message in a controller action:

public function actionIndex()
{
    // Set a success flash message
    Yii::app()->user->setFlash('success', 'Your request has been processed successfully.');
    
    // Render the view
    $this->render('index');
}

In this example, we set a flash message with the key 'success' and the message 'Your request has been processed successfully.'. You can also set an error message by using the key 'error'.

How to Display Flash Messages in Yii1

Once you have set a flash message, you can display it to the user by using the getFlash() method. Here is an example of how to display a flash message in a view:

<?php if(Yii::app()->user->hasFlash('success')): ?>
    <div class="alert alert-success">
        <?php echo Yii::app()->user->getFlash('success'); ?>
    </div>
<?php endif; ?>

<?php if(Yii::app()->user->hasFlash('error')): ?>
    <div class="alert alert-danger">
        <?php echo Yii::app()->user->getFlash('error'); ?>
    </div>
<?php endif; ?>

In this example, we check if a flash message with the key 'success' or 'error' exists using the hasFlash() method. If it does, we display the message inside an alert box. You can customize the alert box by modifying the CSS classes.

Conclusion

Setting and displaying flash messages in Yii1 is straightforward and can be done in just a few lines of code. Flash messages are useful for providing feedback to users and improving the user experience.