function views_block_info in Views (for Drupal 7) 8.3

Same name and namespace in other branches

1. 7.3 views.module \views_block_info()

Implement hook_block_info().

File

./views.module, line 702

Primarily Drupal hooks and global API functions to manipulate views.

Code

function views_block_info() {

  // Try to avoid instantiating all the views just to get the blocks info.
  views_include('cache');
  $cache = views_cache_get('views_block_items', TRUE);
  if ($cache && is_array($cache->data)) {
    return $cache->data;
  }
  $items = array();
  $views = views_get_all_views();
  foreach ($views as $view) {

    // disabled views get nothing.
    if (!$view
      ->isEnabled()) {
      continue;
    }
    $view
      ->initDisplay();
    foreach ($view
      ->getExecutable()->displayHandlers as $display) {
      if (isset($display) && !empty($display->definition['uses_hook_block'])) {
        $result = $display
          ->executeHookBlockList();
        if (is_array($result)) {
          $items = array_merge($items, $result);
        }
      }
      if (isset($display) && $display
        ->getOption('exposed_block')) {
        $result = $display
          ->getSpecialBlocks();
        if (is_array($result)) {
          $items = array_merge($items, $result);
        }
      }
    }
  }

  // block.module has a delta length limit of 32, but our deltas can
  // unfortunately be longer because view names can be 32 and display IDs
  // can also be 32. So for very long deltas, change to md5 hashes.
  $hashes = array();

  // get the keys because we're modifying the array and we don't want to
  // confuse PHP too much.
  $keys = array_keys($items);
  foreach ($keys as $delta) {
    if (strlen($delta) >= 32) {
      $hash = md5($delta);
      $hashes[$hash] = $delta;
      $items[$hash] = $items[$delta];
      unset($items[$delta]);
    }
  }

  // Only save hashes if they have changed.
  $old_hashes = variable_get('views_block_hashes', array());
  if ($hashes != $old_hashes) {
    variable_set('views_block_hashes', $hashes);
  }
  views_cache_set('views_block_items', $items, TRUE);
  return $items;
}