Drupal 9 Messenger API example

By hari, 4 August, 2023

Drupal set message was deprecated in Drupal 8.5 and will be removed before Drupal 9. Time for a roundup of this new API and how to use it.

<?php

// Add message (defaults to "status" message type).
\Drupal::messenger()->addMessage('Hello world');

// Add specific type of message.
\Drupal::messenger()->addMessage('Hello world', 'custom');
\Drupal::messenger()->addError('Hello world');
\Drupal::messenger()->addStatus('Hello world');
\Drupal::messenger()->addWarning('Hello world');

// In a Drupal 9 Form's submitForm() handler:
$this->messenger()->addMessage($this->t('Hello world.'));

Drupal 9 Messenger API example

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