public function FormState::isValueEmpty in Zircon Profile 8
Same name and namespace in other branches
- 8.0 core/lib/Drupal/Core/Form/FormState.php \Drupal\Core\Form\FormState::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 $key has no value, FALSE otherwise.
Overrides FormStateInterface::isValueEmpty
File
- core/
lib/ Drupal/ Core/ Form/ FormState.php, line 1034 - Contains \Drupal\Core\Form\FormState.
Class
- FormState
- Stores information about the state of a form.
Namespace
Drupal\Core\FormCode
public function isValueEmpty($key) {
$exists = NULL;
$value = NestedArray::getValue($this
->getValues(), (array) $key, $exists);
return !$exists || empty($value);
}