cssd-back/app/Models/Label.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;

class Label extends Model
{
    public $fillable = [
        'sterile_date', 'expire_date', 'sterilizer_id', 'cycle_number', 'lot_number', 'user_id',
        'package_id'
    ];

    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }

    public function package(): BelongsTo
    {
        return $this->belongsTo(Package::class);
    }

    public function cycles(): BelongsToMany
    {
        return $this->belongsToMany(Cycle::class, 'cycle_label')
            ->withPivot('count');
    }
}