sfp_api_laravel_serprati/app/Models/Notification.php

<?php

namespace App\Models;

use App\Enums\NotificationRecipientEnum;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\SoftDeletes;

class Notification extends Model
{
    use SoftDeletes;

    protected $table = 'custom_notifications';

    protected $guarded = ['id'];

    protected function casts(): array
    {
        return [
            'recipient'             => NotificationRecipientEnum::class,
            'recipient_position_id' => 'integer',
            'recipient_sector_id'   => 'integer',
        ];
    }

    public function createdBy(): BelongsTo
    {
        return $this->belongsTo(User::class, 'created_by');
    }

    public function sends(): HasMany
    {
        return $this->hasMany(NotificationSend::class);
    }

    public function media(): HasMany
    {
        return $this->hasMany(Media::class, 'source_id')->where('source', 'notification');
    }
}