code-bang/backend/application/api/controller/Catalog.php

<?php

namespace app\api\controller;

use app\common\controller\Api;
use app\common\service\CategoryService;
use think\exception\HttpResponseException;

class Catalog extends Api
{
    protected $noNeedLogin = ['index'];
    protected $noNeedRight = ['*'];

    /**
     * 分类列表
     *
     * @ApiMethod (GET)
     * @param string $type 栏目类型，banner 时返回首页轮播（name、image、description）
     */
    public function index()
    {
        try {
            $type = (string)$this->request->get('type', '');
            if ($type === 'banner') {
                $this->success('', CategoryService::getBannerList());
            }
            $cateList = CategoryService::getOptions();
            $res = [
                ['text' => '全部', 'key' => 0]
            ];
            foreach ($cateList as $key => $val) {
                $res[] = ['text' => $val, 'key' => $key];
            }
            $this->success('', $res);
        } catch (\Exception $e) {
            if ($e instanceof HttpResponseException) {
                throw $e;
            }
            $this->error($e->getMessage());
        }
    }
}