public function FormStateValuesTrait::hasValue in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Form/FormStateValuesTrait.php \Drupal\Core\Form\FormStateValuesTrait::hasValue()

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

File

core/lib/Drupal/Core/Form/FormStateValuesTrait.php, line 61

Class

FormStateValuesTrait

Provides methods to manage form state values.

Namespace

Drupal\Core\Form

Code

public function hasValue($key) {
  $exists = NULL;
  $value = NestedArray::getValue($this
    ->getValues(), (array) $key, $exists);
  return $exists && isset($value);
}