nanosanteservice/app/Models/NhExam.php

<?php

/**
 * Created by Reliese Model.
 */

namespace App\Models;

use Carbon\Carbon;
use Illuminate\Database\Eloquent\Model;

/**
 * Class NhExam
 *
 * @property int $id
 * @property int $act_id
 * @property string $description
 * @property int $quantity
 * @property float $unit_price
 * @property int $unit_quantity
 * @property float $insured_paid_amount
 * @property float $insurer_paid_amount
 * @property int $billed
 * @property Carbon $created_at
 * @property Carbon $updated_at
 *
 * @package App\Models
 */
class NhExam extends Model
{
    protected $table = 'nh_exams';

    protected $casts = [
        'act_id' => 'int',
        'quantity' => 'int',
//        'unit_price' => 'float',
//        'insured_paid_amount' => 'float',
//        'insurer_paid_amount' => 'float',
        'billed' => 'boolean'
    ];

    protected $fillable = [
        'act_id',
        'description',
        'quantity',
        'unit_price',
        'unit_quantity',
        'insured_paid_amount',
        'insurer_paid_amount',
        'billed'
    ];

    public function act()
    {
        return $this->belongsTo(NhAct::class, 'act_id');
    }
}