oliverdavies.uk/content/node.6118c41e-e92e-4865-9f1c-64dd19e2bc40.json

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    "revision_timestamp": [
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            "value": "2025-05-11T09:00:40+00:00"
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            "target_uuid": "b8966985-d4b2-42a7-a319-2e94ccfbb849"
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    "title": [
        {
            "value": "What is deprecated code?\n"
        }
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    "created": [
        {
            "value": "2023-05-17T00:00:00+00:00"
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    "path": [
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            "alias": "\/daily\/2023\/05\/17\/what-is-deprecated-code",
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    "body": [
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            "value": "\n          <p>Deprecating code is a way of identifying code that will be removed in a future major version.<\/p>\n\n<p>For example, the <code>drupal_set_message()<\/code> function was deprecated in Drupal 8.5 and removed in Drupal 9 as the <code>messenger<\/code> service replaced it.<\/p>\n\n<p>Once it was deprecated, the function was changed to use the new service to avoid duplicating code and a message was added to notify Developers:<\/p>\n\n<pre><code class=\"language-php\">function drupal_set_message($message = NULL, $type = 'status', $repeat = FALSE) {\n  @trigger_error('drupal_set_message() is deprecated in Drupal 8.5.0 and will be removed before Drupal 9.0.0. Use \\Drupal\\Core\\Messenger\\MessengerInterface::addMessage() instead. See https:\/\/www.drupal.org\/node\/2774931', E_USER_DEPRECATED);\n\n  $messenger = \\Drupal::messenger();\n  if (isset($message)) {\n    $messenger-&gt;addMessage($message, $type, $repeat);\n  }\n\n  return $messenger-&gt;all();\n}\n<\/code><\/pre>\n\n<p>This approach means that code can be refactored without breaking backwards-compatibility and, to upgrade any custom code to be compatible with Drupal 9, any references to <code>drupal_set_message()<\/code> just needed to be updated to use the new Messenger service.<\/p>\n\n<p>No large rewrite needed!<\/p>\n\n        ",
            "format": "full_html",
            "processed": "\n          <p>Deprecating code is a way of identifying code that will be removed in a future major version.<\/p>\n\n<p>For example, the <code>drupal_set_message()<\/code> function was deprecated in Drupal 8.5 and removed in Drupal 9 as the <code>messenger<\/code> service replaced it.<\/p>\n\n<p>Once it was deprecated, the function was changed to use the new service to avoid duplicating code and a message was added to notify Developers:<\/p>\n\n<pre><code class=\"language-php\">function drupal_set_message($message = NULL, $type = 'status', $repeat = FALSE) {\n  @trigger_error('drupal_set_message() is deprecated in Drupal 8.5.0 and will be removed before Drupal 9.0.0. Use \\Drupal\\Core\\Messenger\\MessengerInterface::addMessage() instead. See https:\/\/www.drupal.org\/node\/2774931', E_USER_DEPRECATED);\n\n  $messenger = \\Drupal::messenger();\n  if (isset($message)) {\n    $messenger-&gt;addMessage($message, $type, $repeat);\n  }\n\n  return $messenger-&gt;all();\n}\n<\/code><\/pre>\n\n<p>This approach means that code can be refactored without breaking backwards-compatibility and, to upgrade any custom code to be compatible with Drupal 9, any references to <code>drupal_set_message()<\/code> just needed to be updated to use the new Messenger service.<\/p>\n\n<p>No large rewrite needed!<\/p>\n\n        ",
            "summary": null
        }
    ]
}