轮播图模块控制器代码

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019/2/27
 * Time: 1:34
 */

namespace app\admin\controller;

use app\admin\controller\Common;
use app\admin\model\SlideModel;
use think\facade\Request;
use think\facade\Session;

class Slide extends Common
{
    public function index()
    {
        $slideModel = new SlideModel();
        $data = $slideModel->order('id','desc')->limit(4)->paginate();
        $this->assign('data',$data);
        return $this->fetch();
    }

    public function add()
    {
        return $this->fetch();
    }
    public function upload()
    {
        $file = Request::file('file');
        if($info = $file->validate(['ext'=>'jpg,jpeg,png,gif'])->move('upload')){
            return ['data'=>'/upload/'.str_replace('\\','/',$info->getSaveName())];
        }else{
            return ['data'=>$file->getError()];
        }
    }
    public function doAdd()
    {
        $data['pic'] = Request::param('pic');
        $data['desc'] = Request::param('desc');
        $data['username'] = Session::get('username');
        $data['pubtime'] = time();

        $slideModel = new SlideModel();
        if($slideModel->save($data)){
            return ['status'=>0,'msg'=>'添加成功'];
        }else{
            return ['status'=>1,'msg'=>'添加失败'];
        }
    }
    public function del()
    {
        $id = Request::param('id');
        SlideModel::destroy($id);
        return ['status'=>0];
    }
}