function FormStateValuesTrait::isValueEmpty

Same name in other branches
  1. 8.9.x core/lib/Drupal/Core/Form/FormStateValuesTrait.php \Drupal\Core\Form\FormStateValuesTrait::isValueEmpty()
  2. 10 core/lib/Drupal/Core/Form/FormStateValuesTrait.php \Drupal\Core\Form\FormStateValuesTrait::isValueEmpty()
  3. 11.x core/lib/Drupal/Core/Form/FormStateValuesTrait.php \Drupal\Core\Form\FormStateValuesTrait::isValueEmpty()

Implements \Drupal\Core\Form\FormStateInterface::isValueEmpty()

File

core/lib/Drupal/Core/Form/FormStateValuesTrait.php, line 70

Class

FormStateValuesTrait
Provides methods to manage form state values.

Namespace

Drupal\Core\Form

Code

public function isValueEmpty($key) {
    $exists = NULL;
    $value = NestedArray::getValue($this->getValues(), (array) $key, $exists);
    return !$exists || empty($value);
}

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