Tag: ignore

In the user account form, I created two selection fields (of type list_string) for State and city.

The state field contains a list of states for its allowed values config, and the city field has no value for its allowed values config (because it is supposed to have dynamic values).

The city field is dynamically filled via ajax after selecting a state (this is a dependent dropdown mechanism).

Everything was fine until I tried to save the entity and I get a "Illegal choice selected..." Error message.

I've tried all the (decent) workarounds of this problem, but none of them worked (including a list of dynamic values).

For those who are wondering, here is how I implemented the list of dynamic values ​​when I tried it:

/**
 * Set dynamic allowed values for the city field.
 *
 * @param DrupalfieldEntityFieldStorageConfig $definition
 *   The field definition.
 * @param DrupalCoreEntityContentEntityInterface|null $entity
 *   The entity being created if applicable.
 * @param bool $cacheable
 *   Boolean indicating if the results are cacheable.
 *
 * @return array
 *   An array of possible key and value options.
 *
 * @see options_allowed_values()
 */
function module_name_cities_allowed_values(FieldStorageConfig $definition, ContentEntityInterface $entity = NULL, bool $cacheable): array {
  $options = ();

  if ($entity->bundle() == 'user') {
    $state = $entity->getState(); // Returns the value for `field_user_state`

    $cities = module_name_load_cities_from_state($state);
    $options = array_merge(('_none' => '- Select a city -'), $cities);
  }

  return $options;
}

As you can see, this would not work because I'm relying on the entity that is full of values ​​as I try to load the list of cities from another entity field (State). Is that clear?

In the ideal world, I could delete this validation from the "valid choice", defined with the help of the AllowedValues constraint at a given moment. Unfortunately, I have not been able to try to do it.

Does anyone know how to remove this validation constraint?

I can see that it's settled by inspecting the return value of Drupal::entityManager()->getStorage('field_config')->load('user.user.field_user_city')->getItemDefinition()->getConstraints();

How to circumvent this allowed the validation of the values?