function _blockcache_alter_get_cache_id in Block Cache Alter 6

Get cid for a block.

1 call to _blockcache_alter_get_cache_id()

blockcache_alter_block_view in ./blockcache_alter.module

View a cached block using hook_block(). If the block is not cached or the cache is stale, get the info and stick it back into the cache.

File

./blockcache_alter.module, line 494

Block Cache alter.

Code

function _blockcache_alter_get_cache_id($module, $delta) {
  global $theme, $base_root, $user;
  static $block_cache = array();
  if (!isset($block_cache[$module][$delta])) {
    $result = db_query("SELECT module, delta, cache FROM {blocks} WHERE theme = '%s'", $theme);
    while ($row = db_fetch_object($result)) {
      $block_cache[$row->module][$row->delta] = $row->cache;
    }
  }
  $block = new stdClass();
  $block->cache = $block_cache[$module][$delta];

  // User 1 being out of the regular 'roles define permissions' schema,
  // it brings too many chances of having unwanted output get in the cache
  // and later be served to other users. We therefore exclude user 1 from
  // block caching.
  if (variable_get('block_cache', 0) && $block->cache != BLOCK_NO_CACHE && $user->uid != 1) {
    $cid_parts = array();

    // Start with common sub-patterns: block identification, theme, language.
    $cid_parts[] = $module;
    $cid_parts[] = $delta;
    $cid_parts[] = $theme;
    if (module_exists('locale')) {
      global $language;
      $cid_parts[] = $language->language;
    }

    // 'PER_ROLE' and 'PER_USER' are mutually exclusive. 'PER_USER' can be a
    // resource drag for sites with many users, so when a module is being
    // equivocal, we favor the less expensive 'PER_ROLE' pattern.
    if ($block->cache & BLOCK_CACHE_PER_ROLE) {
      $cid_parts[] = 'r.' . implode(',', array_keys($user->roles));
    }
    elseif ($block->cache & BLOCK_CACHE_PER_USER) {
      $cid_parts[] = "u.{$user->uid}";
    }
    if ($block->cache & BLOCK_CACHE_PER_PAGE) {
      $cid_parts[] = $base_root . request_uri();
    }
    return implode(':', $cid_parts);
  }
}