trustlab-api/app/Models/Inquiry.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

use Illuminate\Database\Eloquent\Factories\HasFactory;

class Inquiry extends Model
{
    use HasFactory;

    public $incrementing = false;
    protected $keyType = 'string';

    protected $fillable = [
        'name',
        'email',
        'category',
        'subject',
        'message',
        'status',
        'replied_at',
    ];

    protected $casts = [
        'replied_at' => 'datetime',
    ];

    protected static function booted()
    {
        static::creating(function ($model) {
            if (empty($model->{$model->getKeyName()})) {
                $model->{$model->getKeyName()} = \App\Helpers\UuidHelper::generate();
            }
        });
    }
}