insure/application/api/controller/CategoryData.php

<?php
/**
 * 分类
 */
namespace app\api\controller;
use app\admin\model\Category;
use app\common\controller\Api;

class CategoryData extends Api{
    protected $noNeedLogin = '*';
    protected $noNeedRight = '*';

    /**
     * 点击查看排名
     */
    public function lookRanking(){
        $second_id = $this->request->post("second_id",0); //二级id
        $tertiary_id = $this->request->post("tertiary_id",0); //三级id
        if (empty($second_id)){
            $this->error('请填写二级id');
        }
        if(empty($tertiary_id)){
            $this->error('请填写三级id');
        }

        $CategoryModel = new Category();
        $pid = Category::where(array('id'=>$second_id))->value('pid');

        //查询一级分类
        $firCat = $CategoryModel->where(array('pid'=>0))->order('sort asc')->field('id,name,active')->select();
        if($firCat){
            foreach ($firCat as $key=>$value){
                if($pid == $value['id']){
                    $firCat[$key]['active'] = 1;
                }else{
                    $firCat[$key]['active'] = 0;
                }

            }
        }
        //查询二级的分类
        $secCat = Category::where(array('pid'=>$pid))->field('id,name,active')->order('sort asc')->select();

        if($secCat){
            foreach ($secCat as $key=>$value){
                if($value['id'] == $second_id){
                    $secCat[$key]['active'] = 1;
                }else{
                    $secCat[$key]['active'] = 0;
                }

            }
        }

        //查询三级的分类
        $thrCat = Category::where(array('pid'=>$second_id))->field('id,name,active')->order('sort asc')->select();
        if($thrCat){
            foreach ($thrCat as $key=>$value){
                if($value['id'] == $tertiary_id){
                    $thrCat[$key]['active'] = 1;
                }else{
                    $thrCat[$key]['active'] = 0;
                }

            }
        }

        $info['firCat'] = $firCat;
        $info['secCat'] = $secCat;
        $info['thrCat'] = $thrCat;

        $this->success('成功',$info);


    }
}