7.x block.module block_form_system_performance_settings_alter(&$form, &$form_state)

Implements hook_form_FORM_ID_alter().

File

modules/block/block.module, line 1077
Controls the visual building blocks a page is constructed with.

Code

function block_form_system_performance_settings_alter(&$form, &$form_state) {
  $disabled = !variable_get('block_cache_bypass_node_grants', FALSE) && count(module_implements('node_grants'));
  $form['caching']['block_cache'] = array(
    '#type' => 'checkbox',
    '#title' => t('Cache blocks'),
    '#default_value' => variable_get('block_cache', FALSE),
    '#disabled' => $disabled,
    '#description' => $disabled ? t('Block caching is inactive because you have enabled modules defining content access restrictions.') : NULL,
    '#weight' => -1,
  );
}