public function FormStateDecoratorBase::isValueEmpty in Drupal 9

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/Form/FormStateDecoratorBase.php \Drupal\Core\Form\FormStateDecoratorBase::isValueEmpty()

Determines if a specific key has a value in the submitted form values.

Parameters

string|array $key: Values are stored as a multi-dimensional associative array. If $key is a string, it will return empty($values[$key]). If $key is an array, each element of the array will be used as a nested key. If $key = array('foo', 'bar') it will return empty($values['foo']['bar']).

Return value

bool TRUE if the $key has no value, FALSE otherwise.

Overrides FormStateInterface::isValueEmpty

File

core/lib/Drupal/Core/Form/FormStateDecoratorBase.php, line 560

Class

FormStateDecoratorBase

Decorates another form state.

Namespace

Drupal\Core\Form

Code

public function isValueEmpty($key) {
  return $this->decoratedFormState
    ->isValueEmpty($key);
}