Filter Albums view by Album Access type (patch)

This is a great idea. I think it would be best in the photos_access sub-module since that module creates the {photos_access_album} table. Added it there in the D8 version.

/**
 * Helper function to return options for views album privacy filter.
 */
function _photos_access_album_views_options() {
  return array(
    0 => t('Open'),
    1 => t('Locked'),
    2 => t('Designated users'),
    3 => t('Password required')
  );
}

/**
 * Implements hook_views_data().
 */
function photos_access_views_data() {
  $data = array();
  $data['photos_access_album'] = array();
  $data['photos_access_album']['table'] = array();
  $data['photos_access_album']['table']['group'] = t('Photos');
  $data['photos_access_album']['table']['provider'] = 'photos_access';

  // Join node_field_data.
  $data['photos_access_album']['table']['join'] = array(
    'node_field_data' => array(
      'left_field' => 'nid',
      'field' => 'nid',
    ),
  );

  // Numeric field, exposed as a field, sort, filter, and argument.
  $data['photos_access_album']['viewid'] = array(
    'title' => t('Privacy'),
    'help' => t('Album privacy setting.'),
    'field' => array(
      'id' => 'numeric',
    ),
    'sort' => array(
      'id' => 'standard',
    ),
    'filter' => array(
      'id' => 'in_operator',
      'options callback' => '_photos_access_album_views_options'
    ),
    'argument' => array(
      'id' => 'numeric',
    ),
  );

  return $data;
}