photoDB/app/Worker.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Worker extends Model
{
    public function work_positions()
    {
        return $this->belongsTo(Work_position::class, 'id_position', 'id');
    }

    public function orders() 
    {
        return $this->hasMany(Order::class);
    }

    public function servoces() 
    {
        return $this->hasMany(Service_worker::class);
    }
}