jucai/app/Services/Content/ArticleCategoryService.php

<?php
namespace App\Services\Content;

use App\Repositories\ArticleCategoryRepository;

class ArticleCategoryService
{

    /**
     * @var ArticleCategoryRepository
     */
    protected $articleCategoryRepository;

    /**
     * ArticleCategoryService constructor.
     * @param ArticleCategoryRepository $articleCategoryRepository
     */
    public function __construct(ArticleCategoryRepository $articleCategoryRepository)
    {
        $this->articleCategoryRepository = $articleCategoryRepository;
    }


    public function getChildCategorys($id, $limit)
    {
        $where = array();
        $where['parent_id'] = $id;
        $list=$this->articleCategoryRepository->getChildCategorys($where, $limit);
        return $list;
    }


}