src/Leevel/Database/Ddd/Relation/ManyMany.php
protected function getPreLoadSourceValue(array $entitys): array
    {
        $arr = [];

        foreach ($entitys as $sourceEntity) {
            $arr[] = $sourceEntity->__get($this->sourceKey);
        }

        return $arr;
    }
protected function getPreLoadSourceValue(array $entitys): array
    {
        $arr = [];

        foreach ($entitys as $sourceEntity) {
            $arr[] = $sourceEntity->__get($this->sourceKey);
        }

        return $arr;
    }
取回源模型实体对应数据.

@return array