function EntityDisplayModeFormBase::form

File

core/modules/field_ui/src/Form/EntityDisplayModeFormBase.php, line 31

Class

EntityDisplayModeFormBase

Provides the generic base class for entity display mode forms.

Namespace

Code

public function form(array $form, FormStateInterface $form_state) {
  $form['label'] = [
    '#type' => 'textfield',
    '#title' => $this->t('Name'),
    '#maxlength' => 100,
    '#default_value' => $this->entity
      ->label(),
  ];
  $form['id'] = [
    '#type' => 'machine_name',
    '#description' => $this->t('A unique machine-readable name. Can only contain lowercase letters, numbers, and underscores.'),
    '#disabled' => !$this->entity
      ->isNew(),
    '#default_value' => $this->entity
      ->id(),
    '#field_prefix' => $this->entity
      ->isNew() ? $this->entity
      ->getTargetType() . '.' : '',
    '#machine_name' => [
      'exists' => [
        $this,
        'exists',
      ],
      'replace_pattern' => '[^a-z0-9_.]+',
    ],
  ];
  return $form;
}