Is it possible to use AJAX callbacks in the formAlter method?
I tried implementing an AJAX callback in a node edit form which has a select field "field_provinces".
The throbber does seem to trigger on change, however my AJAX callback function is not triggering if I change the value. I set a breakpoint in $form_state->getValue('field_provinces') but it doesn't break.
I also tried doing my callback without ::
Am I doing something wrong here?
/**
* {@inheritdoc}
*/
public function formAlter(array &$form, FormStateInterface &$form_state, $form_id) {
$form['field_provinces']['widget']['#ajax'] = [
'callback' => '::retrieveContactLists',
'event' => 'change',
'wrapper' => 'contact-lists-wrapper',
'progress' => [
'type' => 'throbber'
]
];
$form['field_sendtex_list']['#attributes'] = [
'id' => 'contact-lists-wrapper'
];
}
public function retrieveContactLists(array &$form, FormStateInterface $form_state) {
$form_state->getValue('field_provinces');
$form_state->getValues();
}Closed: works as designed
1.5
Code
I fixed it by using this method:
$form['field_provinces']['widget']['#ajax'] = [
'callback' => [$this, 'retrieveContactLists'],
'event' => 'change',
'wrapper' => 'contact-lists-wrapper',
'progress' => [
'type' => 'throbber'
]
];