How to see if ajax has been added to a simple node form?

Interlated

1/20/23, 7:37 AM

This very simple #ajax customisation to a node form is not working. How can I tell whether the callback has been added? I want to calculate a field if the first field is changed.

function cbi_currency_form_node_bond_edit_form_alter(&$form, FormStateInterface 
   $form_state, $form_id) {

    $form['field_bond_amt_issued']['#ajax'] = [
    'callback' => 'cbi_currency_convert_usd',
    'event' => 'change',
    'wrapper' => 'edit-field-bond-usd-amt-issued-wrapper',
    'progress' => [
      'type' => 'throbber',
       'message' => t('Converting to USD...'),
     ],
  ];
 $form['field_bond_amt_issued']['#prefix'] = t('checking to see an ajax element.');
}

Take the value from field_bond_amt_issued and calculate a value for field_bond_usd_amt_issued.

The callback is simply

function cbi_currency_convert_usd(array &$form, FormStateInterface $form_state) {
  $form['output']['#value'] = 33;
  return $form['output'];
}

I don't see any xhr requests when reviewing in the network console in the browser.

0 + 0

forms

ajax

Kevin

1/20/23, 8:11 AM

Using xdebug to step through the code would be the easiest way to see the callback called. But that prefix looks odd? What is "$form['output']" related to?

Interlated

1/20/23, 9:05 AM

I've had hit and miss in the past with x-debug on the callback. I can't see it being hit in the network view, so am assuming it isn't even being triggered. Xdebug definitely not picking it up.

Kevin

1/20/23, 11:39 AM

So it's a widget form element not a standard form? Xdebug would show you the form element structure.

Interlated

1/20/23, 9:00 PM

Standard content editing form. I can see the form structure.

Kevin

1/20/23, 9:19 PM

Yes - is #ajax being added into the right part of the structure, though? See: https://drupal.stackexchange.com/questions/277008/how-to-implement-ajax-callback-on-form-alter-for-entity-field

Interlated

1/20/23, 10:55 PM

Ah - thank you $form['field_bond_amt_issued']['widget'][0]['value']['#ajax'] = [

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: How to see if ajax has been added to a simple node form?

TH: จะทราบได้อย่างไรว่ามีการเพิ่ม ajax ในรูปแบบโหนดอย่างง่ายหรือไม่?

RO: Cum să vedeți dacă ajax a fost adăugat la un formular de nod simplu?

RU: Как узнать, добавлен ли ajax в простую форму узла?

VI: Làm cách nào để xem ajax đã được thêm vào một dạng nút đơn giản chưa?

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