Attaches data to entities upon loading.
This will attach fields, if the entity is fieldable. It calls hook_entity_load() for modules which need to add data to all entities. It also calls hook_TYPE_load() on the loaded entities. For example hook_node_load() or hook_user_load(). If your hook_TYPE_load() expects special parameters apart from the queried entities, you can set $this->hookLoadArguments prior to calling the method. See Drupal\node\NodeStorageController::attachLoad() for an example.
$queried_entities: Associative array of query results, keyed on the entity ID.
$load_revision: (optional) TRUE if the revision should be loaded, defaults to FALSE.
protected function attachLoad(&$queried_entities, $load_revision = FALSE) {
// Attach fields.
if ($this->entityInfo['fieldable']) {
if ($load_revision) {
field_attach_load_revision($this->entityType, $queried_entities);
}
else {
field_attach_load($this->entityType, $queried_entities);
}
}
// Call hook_entity_load().
foreach (module_implements('entity_load') as $module) {
$function = $module . '_entity_load';
$function($queried_entities, $this->entityType);
}
// Call hook_TYPE_load(). The first argument for hook_TYPE_load() are
// always the queried entities, followed by additional arguments set in
// $this->hookLoadArguments.
$args = array_merge(array(
$queried_entities,
), $this->hookLoadArguments);
foreach (module_implements($this->entityType . '_load') as $module) {
call_user_func_array($module . '_' . $this->entityType . '_load', $args);
}
}