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I have a content type with a file field: field_file_field . I want to attach a custom #ajax callback to the widget which will execute after file upload.

I have tried with:

$ajax_settings = array(
      'callback' => 'some_ajax_callback',
      'wrapper' => "default-wrapper",
      'method' => 'change',
      'effect' => 'fade',
    );

// All of those 3 I have tried.
$form['field_file_field']['#ajax'] = $ajax_settings;
$form['field_file_field'][LANGUAGE_NONE]['#ajax'] = $ajax_settings;
$form['field_file_field'][LANGUAGE_NONE][0]['#ajax'] = $ajax_settings;

Without success. Any idea ? I want to change another file in the edit form when upload file.

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3
  • there's no change method. Perhaps you meant to put that as event? Also, as to your main question, take a look at the core file module (file.field.inc specifically). There's a #process function that gets added on the file widget, which changes the #ajax array's values, effectively after everytime you upload an image. So you may need to add your own #process function into that array, and add your #ajax there. I've never done this before though. Hence just commenting.
    – Beebee
    Commented Nov 14, 2016 at 16:51
  • Oh and you should probably use hook_field_widget_form_alter to do the above (comment) instead of plain hook_form_alter
    – Beebee
    Commented Nov 14, 2016 at 16:58
  • 1
    Can I add additional submit handler for Submit file button and somehow to update another field with javascript ?
    – user3421014
    Commented Nov 14, 2016 at 20:33

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