protected function PullForm::buildSelectElement in Entity Share 8.3

Builds a required select element, disabled if only one option exists.

Parameters

\Drupal\Core\Form\FormStateInterface $form_state: The form state object.

string $field: The form field key.

Return value

array The Drupal form element array, or an empty array if field is invalid.

2 calls to PullForm::buildSelectElement()

PullForm::buildChannelSelect in modules/entity_share_client/src/Form/PullForm.php

Helper function to generate channel select.

PullForm::buildForm in modules/entity_share_client/src/Form/PullForm.php

Form constructor.

File

modules/entity_share_client/src/Form/PullForm.php, line 371

Class

PullForm

Form controller to pull entities.

Namespace

Drupal\entity_share_client\Form

Code

protected function buildSelectElement(FormStateInterface $form_state, string $field) {

  // Get all available options for this field.
  $options = $this
    ->getSelectOptions($field);

  // Sanity check for a valid $field parameter.
  if (!$options) {
    return [];
  }
  $disabled = FALSE;
  $default_value = $this->query
    ->get($field);

  // If only one option, pre-select it and disable the select.
  if (count($options) == 1) {
    $disabled = TRUE;
    $default_value = key($options);
    $form_state
      ->setValue($field, $default_value);
  }
  return [
    '#type' => 'select',
    '#options' => $options,
    '#default_value' => $default_value,
    '#empty_value' => '',
    '#required' => TRUE,
    '#disabled' => $disabled,
  ];
}