hasOne(Member::class, 'member_id', 'join_member_account_list_member_id'); } public function memberInfo() { return $this->hasOne(MemberInfo::class, 'join_info_member_id', 'join_member_account_list_member_id'); } public function memberCert() { return $this->hasOne(MemberCert::class,'join_cert_member_id','join_member_account_list_member_id'); } }