hook_field_widget_form_alter()

Another quick example for you…

Here’s what the default image field form looks like, if you have enabled alt and title attributes:

One way to modify the titles and help text (descriptions) of the Alternate text and Title attributes here is to use hook_field_widget_form_alter. Here’s what your code might look like:

/**
 * Implements hook_field_widget_form_alter().
 */
function mymodule_field_widget_form_alter(&$element, &$form_state, $context) {
  // see http://drupal.stackexchange.com/a/54911 for a more "universal approach"
  if (isset($element['#field_name']) && $element['#field_name'] == 'field_portfolio_images') {
    foreach (element_children($element) as $delta) {
      $element[$delta]['#process'][] = 'mymodule_field_widget_process_field_portfolio_image';
    }
  }
}

/**
 * Process callback for the field_portfolio_image title attribute form changes
 */
function mymodule_field_widget_process_field_portfolio_image($element, &$form_state, $form) {
  if ($element['title']['#access']) {
    $element['title']['#title'] = t('My New title');
    $element['title']['#description'] = t('Here are my custom instructions.');
  }

  return $element;
}

/**

* Implements hook_field_widget_form_alter().

function mymodule_field_widget_form_alter(&$element, &$form_state, $context) {

// see http://drupal.stackexchange.com/a/54911 for a more "universal approach"

if (isset($element['#field_name']) && $element['#field_name'] == 'field_portfolio_images') {

foreach (element_children($element) as $delta) {

$element[$delta]['#process'][] = 'mymodule_field_widget_process_field_portfolio_image';

}

/**

* Process callback for the field_portfolio_image title attribute form changes

function mymodule_field_widget_process_field_portfolio_image($element, &$form_state, $form) {

if ($element['title']['#access']) {

$element['title']['#title'] = t('My New title');

$element['title']['#description'] = t('Here are my custom instructions.');

}

return $element;

}

Here’s the result: