likeadmin/app/common/service/generator/stub/php/model/has_one.stub

    /**
     * @notes 关联{RELATION_NAME}
     * @return \think\model\relation\HasOne
     * @author {AUTHOR}
     * @date {DATE}
     */
    public function {RELATION_NAME}()
    {
        return $this->hasOne({RELATION_MODEL}::class, '{FOREIGN_KEY}', '{LOCAL_KEY}');
    }