baoshi-was/app/Package.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Package extends Model
{
    protected $fillable=[
        'logistic_number','type','weight','length','width','height','owner_id','paper_box_id',
        'measuring_machine_id','recipient','status'
    ];

    public function owner(){
        return $this->belongsTo('App\Owner','owner_id','id');
    }

    public function paperBox(){
        return $this->belongsTo('App\paperBox','paper_box_id','id');
    }

    public function measuringMachine(){
        return $this->belongsTo('App\measuringMachine','measuring_machine_id','id');
    }
}