public function DependentDropdown::submitForm in Examples for Developers 3.x
Same name and namespace in other branches
- 8 ajax_example/src/Form/DependentDropdown.php \Drupal\ajax_example\Form\DependentDropdown::submitForm()
Form submission handler.
Parameters
array $form: An associative array containing the structure of the form.
\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.
Overrides FormInterface::submitForm
File
- modules/
ajax_example/ src/ Form/ DependentDropdown.php, line 159
Class
- DependentDropdown
- Re-populate a dropdown based on form state.
Namespace
Drupal\ajax_example\FormCode
public function submitForm(array &$form, FormStateInterface $form_state) {
$trigger = (string) $form_state
->getTriggeringElement()['#value'];
switch ($trigger) {
case 'Submit':
// Submit: We're done.
$this
->messenger()
->addMessage($this
->t('Your values have been submitted. Instrument family: @family, Instrument: @instrument', [
'@family' => $form_state
->getValue('instrument_family_dropdown'),
'@instrument' => $form_state
->getValue('instrument_dropdown'),
]));
return;
}
// 'Choose' or anything else will cause rebuild of the form and present
// it again.
$form_state
->setRebuild();
}