public function RobotFormBase::buildForm in Examples for Developers 8

Same name and namespace in other branches

1. 3.x modules/config_entity_example/src/Form/RobotFormBase.php \Drupal\config_entity_example\Form\RobotFormBase::buildForm()

Overrides Drupal\Core\Entity\EntityFormController::form().

Builds the entity add/edit form.

Parameters

array $form: An associative array containing the structure of the form.

\Drupal\Core\Form\FormStateInterface $form_state: An associative array containing the current state of the form.

Return value

array An associative array containing the robot add/edit form.

Overrides EntityForm::buildForm

File

config_entity_example/src/Form/RobotFormBase.php, line 78

Class

RobotFormBase

Class RobotFormBase.

Namespace

Drupal\config_entity_example\Form

Code

public function buildForm(array $form, FormStateInterface $form_state) {

  // Get anything we need from the base class.
  $form = parent::buildForm($form, $form_state);

  // Drupal provides the entity to us as a class variable. If this is an
  // existing entity, it will be populated with existing values as class
  // variables. If this is a new entity, it will be a new object with the
  // class of our entity. Drupal knows which class to call from the
  // annotation on our Robot class.
  $robot = $this->entity;

  // Build the form.
  $form['label'] = [
    '#type' => 'textfield',
    '#title' => $this
      ->t('Label'),
    '#maxlength' => 255,
    '#default_value' => $robot
      ->label(),
    '#required' => TRUE,
  ];
  $form['id'] = [
    '#type' => 'machine_name',
    '#title' => $this
      ->t('Machine name'),
    '#default_value' => $robot
      ->id(),
    '#machine_name' => [
      'exists' => [
        $this,
        'exists',
      ],
      'replace_pattern' => '([^a-z0-9_]+)|(^custom$)',
      'error' => 'The machine-readable name must be unique, and can only contain lowercase letters, numbers, and underscores. Additionally, it can not be the reserved word "custom".',
    ],
    '#disabled' => !$robot
      ->isNew(),
  ];
  $form['floopy'] = [
    '#type' => 'checkbox',
    '#title' => $this
      ->t('Floopy'),
    '#default_value' => $robot->floopy,
  ];

  // Return the form.
  return $form;
}