function 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);
}

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.