Display a CCK Filefield or Imagefield Upload Widget on Your Own Custom Form

I solved my problem...it turns out that I CANNOT use '#required' => TRUE when setting up the file field in the form!  That field will be empty for both validate and submit.  Instead I had to actually save the file in the submit function with file_save_upload() to valiidate it.  Here is my submit function excerpt:

function a_upload_form_submit ( $form, &$form_state )
{
    global $user;

    $limits = _upload_file_limits ( $user );
    $validators = array (
        'file_validate_extensions' => array ( $limits['extensions'] ),
    );
    $file = file_save_upload ( 'file', $validators, null, false );
    if ( $file == 0  )
    {
        form_set_error ( '', t ( 'Error: missing required upload file.' ) );
        return;
    }
    // save data code here

}

Hope this helps someone else.

cheers,

Mona

I`m trying to create a CCK widget, based on FileField widget like that. Then I create new CCK widget for my content type. But I did not get this widget while creating a node.

<?php
// $Id:

/**
* Implementation of CCK's hook_widget_info().
*/
function filewidget_widget_info() {
  return array(
    'filewidget' => array(
      'label' => t('Filewidget'),
      'field types' => array('filefield'),
      'multiple values' => CONTENT_HANDLE_CORE,
      'callbacks' => array(
        'default value' => CONTENT_CALLBACK_DEFAULT,
      ),
    ),
  );
}

/**
* Implementation of CCK's hook_widget_settings().
*/
function filewidget_widget_settings($op, $widget) {
  switch ($op) {
    case 'form':
      return filewidget_widget_settings_form($widget);
    case 'validate':
      return filewidget_widget_settings_validate($widget);
    case 'save':
      return filewidget_widget_settings_save($widget);
  }
}

function filewidget_widget_settings_form($widget) {
  $form = module_invoke('filefield', 'widget_settings', 'form', $widget);

  if ($form['file_extensions']['#default_value'] == 'txt') {
    $form['file_extensions']['#default_value'] = '3gp avi flv mp4 mpg mpeg';
  }

  $form['text'] = array(
    '#type' => 'textfield',
    '#title' => t('Text'),
    '#default_value' => !empty($widget['text']) ? $widget['text'] : '',
    '#size' => 15,
    '#maxlength' => 10,
    '#description' => t('Lorem ipsum dolorum set amen.'),
  );

  return $form;
}

function filewidget_widget_settings_validate($widget) {
}

function filewidget_widget_settings_save($widget) {
  $filefield_settings = module_invoke('filefield', 'widget_settings', 'save', $widget);
  return array_merge($filefield_settings, array('text'));
}

/**
* Implementation of CCK's hook_widget().
*
* Assign default properties to item and delegate to FileField.
*/
function filewidget_widget(&$form, &$form_state, $field, $items, $delta = 0) {
  $element = filefield_widget($form, $form_state, $field, $items, $delta);
  return $element;
}

/**
* Element #value_callback function.
*/
function filewidget_widget_value($element, $edit = FALSE) {
  $item = filefield_widget_value($element, $edit);

  return $item;
}

/**
* Element #process callback function.
*/
function filewidget_widget_process($element, $edit, &$form_state, $form) {
  $element = array();

  return $element;
}

/**
* Implementation of CCK's hook_default_value().
*/
function filewidget_default_value(&$form, &$form_state, $field, $delta) {
  return filefield_default_value($form, $form_state, $field, $delta);
}
?>