Programmatically update an entity reference field in Drupal 8 & 9
in this tuto I'll show you how to update Programmatically an entity reference field in Drupal 8 & 9.
Examples with User Entity
You need to use code similar to the following.
$node = Node::load($nid);
$node->field_code_used_by->target_id = $user_id;
$node->save();
For a multiple-value field, to add the value to the end of the list, use the following code.
$node->field_code_used_by[] = ['target_id' => $user_id];
Another way is setting the entity property with the entity object, as in the following code.
$node = Node::load($nid);
$user = \Drupal\user\Entity\User::load(1);
$node->field_code_used_by->entity = $user;
$node->save();
Examples with Images
$node->set('field_article_images', ['target_id' => $fid]);
For a multiple-value field, to add the value to the end of the list, use the following code.
Let's say we have a bunch of images to add to our node.
$imageIds = [
'31',
'32',
'33'
];
foreach($imageIds as $index => $fid) {
if($index == 0) {
$node->set('field_article_images', $fid);
} else {
$node->get('field_article_images')->appendItem([
'target_id' => $fid,
]);
}
}
