solidtime/app/Jobs/RecalculateSpentTimeForProject.php

<?php

declare(strict_types=1);

namespace App\Jobs;

use App\Models\Project;
use Exception;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Events\ShouldDispatchAfterCommit;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;

class RecalculateSpentTimeForProject implements ShouldDispatchAfterCommit, ShouldQueue
{
    use Dispatchable;
    use InteractsWithQueue;
    use Queueable;
    use SerializesModels;

    public Project $project;

    /**
     * Create a new job instance.
     */
    public function __construct(Project $project)
    {
        $this->project = $project;
    }

    /**
     * Execute the job.
     *
     * @throws Exception
     */
    public function handle(): void
    {
        $this->project->setComputedAttributeValue('spent_time');
        if ($this->project->isDirty()) {
            $this->project->save();
        }
    }
}