function system_performance_settings
system_performance_settings()
Form builder; Configure site performance settings.
See also
Related topics
File
- modules/system/system.admin.inc, line 1688
- Admin page callbacks for the system module.
Code
function system_performance_settings() { drupal_add_js(drupal_get_path('module', 'system') . '/system.js'); $form['clear_cache'] = array( '#type' => 'fieldset', '#title' => t('Clear cache'), ); $form['clear_cache']['clear'] = array( '#type' => 'submit', '#value' => t('Clear all caches'), '#submit' => array('system_clear_cache_submit'), ); $form['caching'] = array( '#type' => 'fieldset', '#title' => t('Caching'), ); $cache = variable_get('cache', 0); $form['caching']['cache'] = array( '#type' => 'checkbox', '#title' => t('Cache pages for anonymous users'), '#default_value' => $cache, '#weight' => -2, ); $period = drupal_map_assoc(array(0, 60, 180, 300, 600, 900, 1800, 2700, 3600, 10800, 21600, 32400, 43200, 86400), 'format_interval'); $period[0] = '<' . t('none') . '>'; $form['caching']['cache_lifetime'] = array( '#type' => 'select', '#title' => t('Minimum cache lifetime'), '#default_value' => variable_get('cache_lifetime', 0), '#options' => $period, '#description' => t('Cached pages will not be re-created until at least this much time has elapsed.') ); $form['caching']['page_cache_maximum_age'] = array( '#type' => 'select', '#title' => t('Expiration of cached pages'), '#default_value' => variable_get('page_cache_maximum_age', 0), '#options' => $period, '#description' => t('The maximum time an external cache can use an old version of a page.') ); $directory = 'public://'; $is_writable = is_dir($directory) && is_writable($directory); $disabled = !$is_writable; $disabled_message = ''; if (!$is_writable) { $disabled_message = ' ' . t('<strong class="error">Set up the <a href="!file-system">public files directory</a> to make these optimizations available.</strong>', array('!file-system' => url('admin/config/media/file-system'))); } $form['bandwidth_optimization'] = array( '#type' => 'fieldset', '#title' => t('Bandwidth optimization'), '#description' => t('External resources can be optimized automatically, which can reduce both the size and number of requests made to your website.') . $disabled_message, ); $js_hide = $cache ? '' : ' class="js-hide"'; $form['bandwidth_optimization']['page_compression'] = array( '#type' => 'checkbox', '#title' => t('Compress cached pages.'), '#default_value' => variable_get('page_compression', TRUE), '#prefix' => '<div id="page-compression-wrapper"' . $js_hide . '>', '#suffix' => '</div>', ); $form['bandwidth_optimization']['preprocess_css'] = array( '#type' => 'checkbox', '#title' => t('Aggregate and compress CSS files.'), '#default_value' => intval(variable_get('preprocess_css', 0) && $is_writable), '#disabled' => $disabled, ); $form['bandwidth_optimization']['preprocess_js'] = array( '#type' => 'checkbox', '#title' => t('Aggregate JavaScript files.'), '#default_value' => intval(variable_get('preprocess_js', 0) && $is_writable), '#disabled' => $disabled, ); $form['#submit'][] = 'drupal_clear_css_cache'; $form['#submit'][] = 'drupal_clear_js_cache'; // This form allows page compression settings to be changed, which can // invalidate the page cache, so it needs to be cleared on form submit. $form['#submit'][] = 'system_clear_page_cache_submit'; return system_settings_form($form); }
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https://api.drupal.org/api/drupal/modules!system!system.admin.inc/function/system_performance_settings/7.x