/**
* {@inheritdoc}
*/
public function preRender($result)
{
// Load all result objects at once, before rendering.
$items_to_load = array();
foreach ($result as $i => $row) {
if (empty($row->_object)) {
$items_to_load[$i] = $row->search_api_id;
}
}
$items = $this->index->loadItemsMultiple($items_to_load);
foreach ($items_to_load as $i => $item_id) {
if (isset($items[$item_id])) {
$result[$i]->_object = $items[$item_id];
$result[$i]->_item->setOriginalObject($items[$item_id]);
}
}
}
/**
* Adds Search API result items to a view's result set.
*
* @param \Drupal\search_api\Item\ItemInterface[] $results
* The search results.
* @param \Drupal\views\ViewExecutable $view
* The executed view.
*/
protected function addResults(array $results, ViewExecutable $view) {
/** @var \Drupal\views\ResultRow[] $rows */
$rows = array();
$missing = array();
if (!empty($this->configuration['entity_access'])) {
$items = $this->index->loadItemsMultiple(array_keys($results));
$results = array_intersect_key($results, $items);
/** @var \Drupal\Core\Entity\Plugin\DataType\EntityAdapter $item */
foreach ($items as $item_id => $item) {
if (!$item->getValue()->access('view')) {
unset($results[$item_id]);
}
}
}
// First off, we try to gather as much field values as possible without
// loading any items.
foreach ($results as $item_id => $result) {
$datasource_id = $result->getDatasourceId();
// @todo Find a more elegant way of passing metadata here.
$values['search_api_id'] = $item_id;
$values['search_api_datasource'] = $datasource_id;
// Include the loaded item for this result row, if present, or the item
// ID.
$values['_item'] = $result->getOriginalObject(FALSE);
if (!$values['_item']) {
$values['_item'] = $item_id;
}
$values['search_api_relevance'] = $result->getScore();
$values['search_api_excerpt'] = $result->getExcerpt() ?: '';
// Gather any fields from the search results.
foreach ($result->getFields(FALSE) as $field_id => $field) {
if ($field->getValues()) {
$values[$field_id] = $field->getValues();
}
}
// Check whether we need to extract any properties from the result item.
$missing_fields = array_diff_key($this->fields, $values);
if ($missing_fields) {
$missing[$item_id] = $missing_fields;
if (!is_object($values['_item'])) {
$item_ids[] = $item_id;
}
}
// Save the row values for adding them to the Views result afterwards.
// @todo Use a custom sub-class here to also pass the result item object,
// or other information?
$rows[$item_id] = new ResultRow($values);
}
// Load items of those rows which haven't got all field values, yet.
if (!empty($item_ids)) {
foreach ($this->index->loadItemsMultiple($item_ids) as $item_id => $object) {
$results[$item_id]->setOriginalObject($object);
$rows[$item_id]->_item = $object;
}
}
foreach ($missing as $item_id => $missing_fields) {
foreach ($missing_fields as $field_id) {
// @todo This will only extract the indexed fields, but all of them. We
// should instead use Utility::extractFields() directly.
$field = $results[$item_id]->getField($field_id);
if ($field) {
$rows[$item_id]->$field_id = $field->getValues();
}
}
}
// Finally, add all rows to the Views result set.
$view->result = array_values($rows);
array_walk($view->result, function (ResultRow $row, $index) {
$row->index = $index;
});
}
/**
* {@inheritdoc}
*/
public function loadItemsMultiple(array $item_ids, $group_by_datasource = FALSE)
{
return $this->entity->loadItemsMultiple($item_ids, $group_by_datasource);
}
