function blockreference_block_usage in Block reference 7.2

Implements hook_block_usage().

File

./blockreference.module, line 476

Code

function blockreference_block_usage($module, $delta) {
  $moddelta = $module . ':' . $delta;

  // Cycle through potential fields/sources to find field items.
  $fields = field_info_field_map();
  $entity_loads = $loads_by_field_name = array();
  foreach ($fields as $field_name => $field) {
    if ($field['type'] == 'blockreference') {
      $table_name = 'field_data_' . $field_name;
      $column_name = $field_name . '_moddelta';

      // Query this field table for above bids.
      $items = db_query("SELECT entity_type, entity_id FROM {$table_name} WHERE {$column_name} = :moddelta", array(
        ':moddelta' => $moddelta,
      ));

      // Collect entity_type's and entity_id's associatively.
      foreach ($items as $item) {
        $entity_loads[$item->entity_type][] = $item->entity_id;
        $loads_by_field_name[$item->entity_type][$item->entity_id][] = $field_name;
      }
    }
  }

  // Load entities and stack 'em up into results.
  $matches = array();
  foreach ($entity_loads as $entity_type => $ids) {
    $entities = entity_load($entity_type, $ids);
    foreach ($entities as $id => $entity) {
      $uri = entity_uri($entity_type, $entity);
      $path = $uri['path'];
      $options = @$uri['options'] ?: array();
      $fields = $loads_by_field_name[$entity_type][$id];
      $matches[] = l($entity_type . ' # ' . $id, $path, $options) . ' (' . implode(', ', $fields) . ')';
    }
  }
  return $matches;
}