TP6.0 一对一模型关联 hasOne

$data = User::with('profile')->select();
halt($data->toArray());

-- 用户表
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT COMMENT '用户id',
`username` varchar(255) NOT NULL COMMENT '用户名',
`password` char(32) DEFAULT NULL COMMENT '登陆密码',
PRIMARY KEY (`id`) USING BTREE
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8 COMMENT='用户表';
INSERT INTO `user` VALUES (1, 'liang', 'e10adc3949ba59abbe56e057f20f883e');
INSERT INTO `user` VALUES (2, 'zhangsan', 'e10adc3949ba59abbe56e057f20f883e');
INSERT INTO `user` VALUES (3, 'laowang', 'e10adc3949ba59abbe56e057f20f883e');
INSERT INTO `user` VALUES (4, 'wangwu', 'e10adc3949ba59abbe56e057f20f883e');
INSERT INTO `user` VALUES (5, 'xiaosun', 'e10adc3949ba59abbe56e057f20f883e');

-- 用户资料表
DROP TABLE IF EXISTS `profile`;
CREATE TABLE `profile` (
`user_id` int(11) DEFAULT NULL COMMENT '用户id',
`age` tinyint(4) DEFAULT NULL COMMENT '年龄',
`mobile` bigint(20) DEFAULT NULL COMMENT '手机号',
`gender` char(1) DEFAULT NULL COMMENT '性别'
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='用户资料表';
INSERT INTO `profile` VALUES (1, 20, 12305, '男');
INSERT INTO `profile` VALUES (2, 30, 10086, '女');
INSERT INTO `profile` VALUES (5, 40, 10010, '男');

public function profile()
{
// hasOne('关联模型类名', '外键', '主键');
// 用户资料表的外键字段 user_id, 默认为当前模型名 + _id
// 用户表的主键字段 id, 默认为当前模型主键 $pk 属性的值
return $this->hasOne(Profile::class, 'user_id', 'id');
}

public function profile()
{
return $this->hasOne(Profile::class, 'user_id', 'id')
// bind(['字段', '别名' => '字段'])
->bind(['age', 'new_mobile' => 'mobile']);
}

public function profile()
{
return $this->hasOne(Profile::class, 'user_id', 'id')
// 追加获取器
->append(['checked'])
// 隐藏关联表的属性
->hidden(['age']);
}