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实例  user表 和 user_detail

模型User

public function detail(){        return $this->hasOne(UserDetail::class,'user_id');    }

UserDetail模型

class UserDetail extends Model{    protected $table = 'user_detail';    protected $primaryKey = 'id';    protected $guarded = ['id'];}

控制器调用

public function index()    {        $user = User::find(1);        return $user->detail;    }}

结果

{    "id":1,    "user_id":1,    "hobby":"喜欢小姐姐",    "created_at":"2020-06-20T14:58:56.000000Z",    "updated_at":"2020-06-20T14:58:58.000000Z",    "deleted_at":null}

副表调主表

class UserDetail extends Model{    protected $table = 'user_detail';    protected $primaryKey = 'id';    protected $guarded = ['id'];    public function user(){        return $this->belongsTo(User::class,'id');    }}

//一对一 副表调主表$detail = UserDetail::find(1);$detail->user;return $detail->user;

结果

{    "id":1,    "name":"谢谢",    "phone":"15029149794",    "full_name":"谢谢",    "status":1,    "access_token":"wfwefwefwffaf",    "created_at":"2020-06-20T11:11:30.000000Z",    "updated_at":"2020-06-20T11:11:35.000000Z",    "deleted_at":null}

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