function image_field_delete_instance in Drupal 7

Implements hook_field_delete_instance().

File

modules/image/image.module, line 478

Exposes global functionality for creating image styles.

Code

function image_field_delete_instance($instance) {

  // Only act on image fields.
  $field = field_read_field($instance['field_name']);
  if ($field['type'] != 'image') {
    return;
  }

  // The value of a managed_file element can be an array if the #extended
  // property is set to TRUE.
  $fid = $instance['settings']['default_image'];
  if (is_array($fid)) {
    $fid = $fid['fid'];
  }

  // Remove the default image when the instance is deleted.
  if ($fid && ($file = file_load($fid))) {
    file_usage_delete($file, 'image', 'default_image', $instance['id']);
  }
}