function ResourceIdentifier::deduplicate

Deduplicates an array of ResourceIdentifier objects.

Parameters

\Drupal\jsonapi\JsonApiResource\ResourceIdentifier[] $resource_identifiers: The list of ResourceIdentifiers to deduplicate.

Return value

\Drupal\jsonapi\JsonApiResource\ResourceIdentifier[] A deduplicated array of ResourceIdentifier objects.

See also

self::isDuplicate()

2 calls to ResourceIdentifier::deduplicate()

EntityResource::addToRelationshipData in core/modules/jsonapi/src/Controller/EntityResource.php

Adds a relationship to a to-many relationship.

ResourceIdentifier::areResourceIdentifiersUnique in core/modules/jsonapi/src/JsonApiResource/ResourceIdentifier.php

Determines if an array of ResourceIdentifier objects is duplicate free.

File

core/modules/jsonapi/src/JsonApiResource/ResourceIdentifier.php, line 249

Class

ResourceIdentifier

Represents a JSON:API resource identifier object.

Namespace

Drupal\jsonapi\JsonApiResource

Code

public static function deduplicate(array $resource_identifiers) {
    return array_reduce(array_slice($resource_identifiers, 1), function ($deduplicated, $current) {
        assert($current instanceof static);
        return array_merge($deduplicated, array_reduce($deduplicated, function ($duplicate, $previous) use ($current) {
            return $duplicate ?: static::isDuplicate($previous, $current);
        }, FALSE) ? [] : [
            $current,
        ]);
    }, array_slice($resource_identifiers, 0, 1));
}