Here is a form using DI for $this->entity_type_manager
There is also a radio-button with Ajax (I have added the code as it is maybe the reason of my problem)
class myForm extends FormBase {
private ?EntityTypeManagerInterface $entity_type_manager=NULL;
public function __construct(Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager) {
$this->entity_type_manager=$entity_type_manager;
}
public static function create(ContainerInterface $container) {
return new static(
$container->get('entity_type.manager'),
);
}
public function buildForm(array $form, FormStateInterface $form_state) {
// keep the value in $form_state to be used in submit
$form_state->set('entity_type_manager', $this->entity_type_manager);
...
// Maybe the Ajax component is the problem
$form['container'] = [
'#type' => 'container',
'#prefix' => '<div id="ajax-wrapper">',
'#suffix' => '</div>',
'my_radio' => [
'#type' => 'radios',
'#options' => ["option1","option2"],
'#required' => TRUE,
'#default_value' => $type_of_bo,
'#ajax' => [
'callback' => [$this, 'ajaxGetInvestmentHandler'],
'wrapper' => 'ajax-wrapper',
'event' => 'click input',
],
],
...
];
}
static public function ajaxGetInvestmentHandler(array $form, FormStateInterface $form_state) {
return $form['container'];
}
public function submitForm(array &$form, FormStateInterface $form_state) {
// $this->entity_type_manager is NULL
// $form_state->get('entity_type_manager') is also NULL
...
}
...
}
As you can see in the submit, $this->entity_type_manager is NULL and $form_state->get('entity_type_manager') is also NULL.
What is wrong?
