缩略图模块对应控制器代码

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019/2/26
 * Time: 13:42
 */

namespace app\admin\controller;

use app\admin\controller\Common;
use app\admin\model\ProductModel;
use app\admin\model\ProductPicModel;
use think\facade\Request;
use think\facade\Session;
class ProductPic extends Common
{
    public function index()
    {
        $picModel = new ProductPicModel();
        $pics = $picModel->order('id','desc')->paginate();
        $this->assign('pics',$pics);
        return $this->fetch();
    }
    public function add()
    {
        $proModel = new ProductModel();
        $products = $proModel->field('product_id,title')->select();

        $this->assign('products',$products);
        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 $file->getError();
        }
    }
    public function doAdd()
    {
        $pro_id = Request::param('pro_id');
        $pic = Request::param('pic');
        $data['username'] = Session::get('username');
        $data['pubtime'] = time();
        $data['pro_id'] = $pro_id;
        $data['litpic'] = $pic;
        $proPicModel = new ProductPicModel();
        if($proPicModel->save($data)){
            return ['status'=>0,'msg'=>'保存图片成功'];
        }else{
            return ['status'=>1,'msg'=>'保存图片失败'];
        }
    }
    public function del()
    {
        $id = Request::param('id');
        if(ProductPicModel::destroy($id)){
            return ['status'=>0,'msg'=>'删除成功'];
        }else{
            return ['status'=>1,'msg'=>'删除失败'];
        }
    }
}