Filling custom fields when creating an article with an script via the API

Question

I am creating an article in Joomla 4 using the excellent code that is suggested here: Joomla 4 create article programmatically My task is write the values of the custom field simultaneously with the creation of the article. The search for a solution leads only to results for Joomla 3. I ask for help for Joomla 4

Answer 1

In case you're referring to this answer, you can add com_fields array to the data array before passing it to model's save() method:

$article = [
    'title' => 'article title',
    'catid' => 2',
    'com_fields' => [
        'test-field' => 'field value',
    ],
    ...
];

if (!$articleModel->save($article)){
    throw new Exception($articleModel->getError());
}

However, this may not work if you're not logged in as user with field editing permissions. This is because Joomla does not adhere to its advertised MVC architecture. In this case, permission check is performed by the field model when in reality it should be the responsibility of the controller.