public_producer/vendor/hyperf/database/src/Model/Relations/HasOneThrough.php

<?php

declare(strict_types=1);
/**
 * This file is part of Hyperf.
 *
 * @link     https://www.hyperf.io
 * @document https://hyperf.wiki
 * @contact  group@hyperf.io
 * @license  https://github.com/hyperf/hyperf/blob/master/LICENSE
 */

namespace Hyperf\Database\Model\Relations;

use Hyperf\Database\Model\Collection;
use Hyperf\Database\Model\Model;
use Hyperf\Database\Model\Relations\Concerns\SupportsDefaultModels;

class HasOneThrough extends HasManyThrough
{
    use SupportsDefaultModels;

    /**
     * Get the results of the relationship.
     */
    public function getResults()
    {
        return $this->first() ?: $this->getDefaultFor($this->farParent);
    }

    /**
     * Initialize the relation on a set of models.
     *
     * @param string $relation
     * @return array
     */
    public function initRelation(array $models, $relation)
    {
        foreach ($models as $model) {
            $model->setRelation($relation, $this->getDefaultFor($model));
        }

        return $models;
    }

    /**
     * Match the eagerly loaded results to their parents.
     *
     * @param string $relation
     * @return array
     */
    public function match(array $models, Collection $results, $relation)
    {
        $dictionary = $this->buildDictionary($results);

        // Once we have the dictionary we can simply spin through the parent models to
        // link them up with their children using the keyed dictionary to make the
        // matching very convenient and easy work. Then we'll just return them.
        foreach ($models as $model) {
            if (isset($dictionary[$key = $model->getAttribute($this->localKey)])) {
                $value = $dictionary[$key];
                $model->setRelation(
                    $relation,
                    reset($value)
                );
            }
        }

        return $models;
    }

    /**
     * Make a new related instance for the given model.
     *
     * @return Model
     */
    public function newRelatedInstanceFor(Model $parent)
    {
        return $this->related->newInstance();
    }
}