function apdqc_admin_system_performance_settings_form in Asynchronous Prefetch Database Query Cache 7

Add various apdqc settings to the system_performance_settings form.

1 call to apdqc_admin_system_performance_settings_form()

apdqc_form_system_performance_settings_alter in ./apdqc.module

Implements hook_form_FORM_ID_alter().

File

./apdqc.admin.inc, line 39

Admin page callbacks for the apdqc module.

Code

function apdqc_admin_system_performance_settings_form(&$form, $form_state) {
  apdqc_admin_set_message_if_needed();

  // Add in additional times.
  $form['caching']['cache_lifetime']['#options'] += apdqc_admin_additional_times();
  ksort($form['caching']['cache_lifetime']['#options']);
  $form['caching']['page_cache_maximum_age']['#options'] += apdqc_admin_additional_times();
  ksort($form['caching']['page_cache_maximum_age']['#options']);

  // Give more detail about cache_lifetime.
  $form['caching']['cache_lifetime']['#description'] .= ' ' . t("When set to <none>, the entire block and page cache is cleared every time any content is saved.");

  // Recommend the expire module.
  if (!module_exists('expire')) {
    $form['caching']['cache_lifetime']['#description'] .= '<p> ' . t('If using something other than &lt;none&gt; the <a href="@expire">Cache Expiration</a> module is highly recommended.', array(
      '@expire' => 'https://www.drupal.org/project/expire',
    )) . '</p>';
  }
  else {

    // Get config page for expire module.
    $items = expire_menu();
    $link = '';
    foreach ($items as $url => $item) {
      if (in_array('expire_admin_settings_form', $item['page arguments'])) {
        $link = $url;
        break;
      }
    }
    if (empty($link)) {
      foreach ($items as $url => $item) {
        if (strpos($url, 'admin') && strpos($url, 'expire')) {
          $link = $url;
          break;
        }
      }
    }

    // Inform user they need to configure expire.
    $form['caching']['cache_lifetime']['#description'] .= '<p> ' . t('Be sure to <a href="@expire-admin">configure the expire module</a> correctly.', array(
      '@expire-admin' => url($link),
    )) . '</p>';
  }

  // Give more detail about page_cache_maximum_age.
  $form['caching']['page_cache_maximum_age']['#description'] .= ' ' . t('This not only affects reverse proxy caches like Varnish, but also how long browsers should keep cached versions of your pages. If your site changes often keep this value low.');
  $apdqc_form = apdqc_admin_get_settings();

  // Expose the cache_garbage_collection_frequency variable.
  $form['caching']['cache_garbage_collection_frequency'] = $apdqc_form['cache_garbage_collection_frequency'];

  // Allow for module level prefetching to be disabled.
  $form['caching']['apdqc_prefetch'] = $apdqc_form['apdqc_prefetch'];

  // Re-order cache fields.
  $form['caching']['cache_lifetime']['#weight'] = 10;
  $form['caching']['cache_garbage_collection_frequency']['#weight'] = 11;
  $form['caching']['page_cache_maximum_age']['#weight'] = 12;
  $form['caching']['apdqc_prefetch']['#weight'] = 2;
}