Cycle\Schema\Relation\Traits\MorphTrait::findOuterKey()

Complexity

Conditions	8
Paths	10

Size

Total Lines	34
Code Lines	19

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php declare(strict_types=1);
    protected function findOuterKey(Registry $registry, string $interface): array
    {
        /** @var Field|null $field */
        $key = null;
        $field = null;

        foreach ($registry as $entity) {
            $class = $entity->getClass();
            if ($class === null || !in_array($interface, class_implements($class))) {
                continue;
            }

            $primaryKey = $this->getPrimary($entity);

It seems like getPrimary() must be provided by classes using this trait. How about adding it as abstract method to this trait?

            $primaryField = $entity->getFields()->get($primaryKey);

            if (is_null($field)) {
                $key = $primaryKey;
                $field = $primaryField;
            } else {
                if ($key != $primaryKey) {
                    throw new RelationException("Inconsistent primary key reference (name)");
                }

                if ($field->getType() != $primaryField->getType()) {
                    throw new RelationException("Inconsistent primary key reference (type)");
                }
            }
        }

        if (is_null($field)) {
            throw new RelationException("Unable to find morphed parent");
        }

        return [$key, $field];
    }
}