Can I call two callback function in one ajax call?

Question

I just want to know how we can achieve two ajax callback on one form submit.Is it possible?and how?

Answer 1

No, it is not possible. Why would it be? Ajax callback can return a piece of HTML to replace your AJAX wrapper. If you will call two, which one would Drupal use? How should it decide? That's why #ajax['callback'] is defined as a name of a function, not an array of names. with one function you avoid problems like that.

If you need to call two function in response to AJAX event, then write a callback that will include the logic I asked about in first paragraph, and call functions you need from that callback.

Answer 2

You can't do that directly. Instead, use a function that calls the two other functions.

'#ajax' => array(

  'callback' => 'my_callbacks_wrapper',
) 
...

Then:

my_callbacks_wrapper($form, $form_state) {

  $first_callback_processed_form = first_callback($form, $form_state);

  $second_callback_processed_form = second_callback($first_callback_processed_form, $form_state);

  return $second_callback_processed_form;

}

Make sure your callbacks don't interfere.