Drupal 7 views alter

cmi_test.module.php

<?php

/**
 * @file
 * Module file for cmi_test to register module with views.
 */

/**
 * Implements hook_views_api().
 */
function cmi_test_views_api() {
  return array(
    'api' => 3,
  );
}

cmi_test.views_default.inc.php

<?php

/**
 * @file
 * Views default configuration file to add and alter views exports.
 */

/**
 * Implements hook_views_default_views_alter().
 */
function cmi_test_views_default_views_alter(&$views) {
  if (isset($views['comments_recent'])) {
    // Add an exposed filter for comment approval.
    $handler =& $views['comments_recent']->display['page']->handler;
    $handler->display->display_options['filters']['status']['id'] = 'status';
    $handler->display->display_options['filters']['status']['table'] = 'comment';
    $handler->display->display_options['filters']['status']['field'] = 'status';
    $handler->display->display_options['filters']['status']['value'] = '1';
    $handler->display->display_options['filters']['status']['exposed'] = TRUE;
    $handler->display->display_options['filters']['status']['expose']['operator_id'] = '';
    $handler->display->display_options['filters']['status']['expose']['label'] = 'Approved comment';
    $handler->display->display_options['filters']['status']['expose']['operator'] = 'status_op';
    $handler->display->display_options['filters']['status']['expose']['identifier'] = 'status';
    $handler->display->display_options['filters']['status']['expose']['required'] = TRUE;
    $handler->display->display_options['filters']['status']['expose']['remember_roles'] = array(
      2 => '2',
      1 => 0,
      3 => 0,
    );
  }
}