function DependentDropdown::submitForm
Same name in other branches
- 8.x-1.x ajax_example/src/Form/DependentDropdown.php \Drupal\ajax_example\Form\DependentDropdown::submitForm()
- 4.0.x modules/ajax_example/src/Form/DependentDropdown.php \Drupal\ajax_example\Form\DependentDropdown::submitForm()
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();
}