information-platform/app/Repositories/Criteria/Note/CommentCriteria.php

<?php

namespace App\Repositories\Criteria\Note;

use Illuminate\Http\Request;
use Prettus\Repository\Contracts\CriteriaInterface;
use Prettus\Repository\Contracts\RepositoryInterface;

/**
 * Class CommentCriteria.
 *
 * @package namespace App\Repositories\Criteria\Note;
 */
class CommentCriteria implements CriteriaInterface
{
    public function __construct(Request $request = null)
    {
        if (is_null($request)) {
            $this->request = \request();
        } else {
            $this->request = $request;
        }

    }

    /**
     * Apply criteria in query repository
     *
     * @param string $model
     * @param RepositoryInterface $repository
     *
     * @return mixed
     */
    public function apply($model, RepositoryInterface $repository)
    {
        if ($note_id = $this->request->get('note_id')) {
            $model = $model->where('note_id', '=', $note_id);
        }

        if (($parent_id = $this->request->get('parent_id', false)) !== false) {
            $model = $model->where('parent_id', '=', $parent_id);
        }

        if ($id = $this->request->get('id')) {
            $model = $model->where('id', '=', $id);
        }

        $model = $model->orderByDesc('is_answer')->orderByDesc('id');
        return $model;
    }
}