Flash messages in Extbase¶
In Extbase, the standard way of issuing flash messages is to add them in the controller. Code from the "examples" extension:
$this->addFlashMessage('This is a simple success message');
You cannot call this function in the constructor of a controller or in an initialize action as it needs some internal data structures to be initialized.
A more elaborate example:
// use TYPO3\CMS\Core\Type\ContextualFeedbackSeverity; $this->addFlashMessage( 'This message is forced to be NOT stored in the session by setting the fourth argument to FALSE.', 'Success', ContextualFeedbackSeverity::OK, false );
The messages are then displayed by Fluid with the relevant Viewhelper
as shown in this excerpt of
<div id="typo3-docbody"> <div id="typo3-inner-docbody"> <f:flashMessages /> <f:render section="main" /> </div> </div>
Where to display the flash messages in an Extbase-based backend module is as simple as moving the ViewHelper around.