baoshi-was/app/UserDetail.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class UserDetail extends Model
{
    protected $primaryKey='user_id';
    public $incrementing=false;

    protected $fillable=[
        'user_id','full_name','gender','identity_number','mobile_phone','type'
    ];
    protected $appends=[
        'user_labor_company'
    ];

    public function user(){
        return $this->belongsTo('App\User','user_id','id');
    }
    public function user_labor(){
        return $this->belongsTo('App\UserLabor','user_id','user_id');
    }
    public function userDutyChecks(){
        return $this->hasMany('App\UserDutyCheck','user_id','user_id');
    }


    public function getUserLaborCompanyAttribute()
    {
        return $this['user_labor'] ?$this['user_labor']['company'] : null;
    }


}