protected function RevisionHandler::removeUnused in Feeds Paragraphs 8

Removes any unused entities.

Parameters

Paragraph[] $used_entities:

Paragraph[] $attached:

FieldConfigInterface $field:

1 call to RevisionHandler::removeUnused()

RevisionHandler::cleanUp in src/RevisionHandler.php

Cleans up the entity and its paragraphs before saving the update.

File

src/RevisionHandler.php, line 161

Class

RevisionHandler

Namespace

Drupal\feeds_para_mapper

Code

protected function removeUnused($used_entities, $attached, $field) {

  // Collect the entities that we should remove:
  $toRemove = array();
  for ($i = 0; $i < count($attached); $i++) {
    if (!isset($used_entities[$i])) {
      $toRemove[$i] = $attached[$i];
    }
  }

  // Check that fields in common are not using any of the entities we intend to remove:
  $targetInfo = $field
    ->get('target_info');
  $in_common_fields = $targetInfo->in_common;
  foreach ($in_common_fields as $in_common_field) {
    foreach ($toRemove as $key => $paragraph) {
      $values = $paragraph
        ->get($in_common_field['name'])
        ->getValue();
      if (count($values)) {
        unset($toRemove[$key]);
      }
    }
  }

  // Remove each paragraph id from its parent entity field value:
  $parent = $attached[0]
    ->getParentEntity();
  $parent_field = $attached[0]
    ->get('parent_field_name')
    ->getValue()[0]['value'];
  $removed = 0;
  foreach ($toRemove as $paragraph) {
    $parent_values = $parent
      ->get($parent_field)
      ->getValue();
    foreach ($parent_values as $index => $parent_value) {
      if (isset($parent_value['target_id']) && $parent_value['target_id'] === $paragraph
        ->id()) {
        $parent
          ->get($parent_field)
          ->removeItem($index);
        $removed++;
      }
    }
  }
  if ($removed > 0) {
    $this
      ->createRevision($parent);
  }
}