I am trying to do jquery validation on file upload for file is select or not. I want when user click on upload before submit check file is selected or not. if not stop ajax request. Any Idea to validate it?

$videoForm['profile_photos']['images']['field_photo'] = array(
    '#parents' => array('video', 'field_photo'),
    '#id' => 'field_photo',
    '#type' => 'managed_file',
    '#title' => 'Photo <em>(optional)</em>',
    '#field_name' => 'field_photo',
    '#process' => array(
    '#upload_location' => 'public://' . $user->uid,
    '#limit_validation_errors' => array(array('video', 'field_photo')),
    '#upload_validators' => array(
        'file_validate_size' => array(64*1024*1024),
        'file_validate_extensions' => array('gif jpeg jpg png')
  • What have you tried so far? If your current code has problems you can post it here and people might be able to point out any problem areas.
    – rooby
    Dec 10 '14 at 21:28

What are you using for the file upload element? Is this in a form, webform etc.? With the Form API managed_file should do what you want.

  • Yes i am using a custom form with manage_file. This field is optional. Dec 10 '14 at 21:37
  • The managed_file element has processes attached to it by default. So that you do not override any necessary processes add new ones with $videoForm['profile_photos']['images']['field_photo']['#process'][] = 'new_process_function'; This might be the issue. Edit: you can run the new processes first with array_unshift() instead.
    – sareed
    Dec 10 '14 at 21:52

It's Working Example:

function yourModuleName_form_alter(&$form, &$form_state, $form_id) 
   if($form_id == "test_node_form")
    $form['field_file']['und'][0]['#process'][] = 'process_test_file';

function process_test_file($element, &$form_state, $form)
   $element = file_managed_file_process($element, $form_state, $form);  
   $element['upload_button']['#submit'][] = 'validateCustomFile';
   return $element;
function validateCustomFile($form,$form_state)
  if($form_state['values']['field_file']['und'][0]['fid'] <= 0)
    form_set_error('field_file', t('Please Select At Least One File.'));

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