bike-admin/app/Models/BoxBinding.php

<?php

namespace App\Models;

use App\Traits\ModelHelpers;
use Illuminate\Database\Eloquent\Model;

class BoxBinding extends Model
{
    use ModelHelpers;
    //
    protected $table = "box_binding";

    protected $guarded = [];
    const BINDING_YES = 1;
    const BINDING_NO = 0;
    public static $bindingMaps = [
        self::BINDING_NO => '未绑定',
        self::BINDING_YES => '已绑定',
    ];

    public function bikes(){
        return $this->belongsTo(Bike::class,'box_no','box_no');
    }
}