sfp_api_laravel_serprati/app/Models/AppointmentExam.php

<?php

namespace App\Models;

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

class AppointmentExam extends Model
{
    protected $guarded = ['id'];

    protected function casts(): array
    {
        return [
            'service_price' => 'decimal:2',
        ];
    }

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

    public function partnerAgreementService(): BelongsTo
    {
        return $this->belongsTo(PartnerAgreementService::class)->withTrashed();
    }
}