suryee/application/admin/controller/Carousel.php

<?php
namespace app\admin\controller;

use think\Request;
use app\admin\model\Carousel as CarouselModel;

/**
 * 轮播图管理  
 * @author huwhis@163.com
 * @version   0.0.1
 */
class Carousel extends Base
{
    protected $model;

    public function __construct(Request $request = null)
    {
        parent::__construct($request);

        $this->model = new CarouselModel();
    }

    public function index()
    {
        $data = $this->model->paginate();

        $this->assign('data', $data);
        return $this->fetch();
    }

    public function save(Request $request = null, $id = 0)
    {
        if ($request->isPost()) {
            $param = $request->param();

            if ($param['picture'] == '') {
                $this->error("图片地址不能为空");
            }
            try {
                if ($param['id'] != 0) {
                    $this->model->save([
                        'picture' => $param['picture'],
                        'url' => $param['url'],
                        'title' => $param['title'],
                        'summary' => $param['summary'],
                        'thumb' => $param['thumb']
                    ], ['id' => $param['id']]);
                } else {
                    $this->model->save([
                        'picture' => $param['picture'],
                        'title' => $param['title'],
                        'summary' => $param['summary'],
                        'thumb' => $param['thumb'],
                        'url' => $param['url']
                    ]);
                }
            } catch (\Exception $e) {
                $msg = $e->getMessage();

                $this->error("错误提示:" . $msg);
            }
            $this->success('操作成功', 'admin/carousel/index');
        } else {
            if ($id) {
                $data = $this->model->find($id);
            } else {
                $data = [
                    'id' => 0,
                    'picture' => '',
                    'url' => '',
                    'title' => '',
                    'summary' => '',
                    'thumb' => ''
                ];
            }
            $this->assign('data', $data);
            return $this->fetch();
        }
    }

    public function uploadimg()
    {
        return $this->fetch();
    }

    public function delete($id = null)
    {
        if (Request::instance()->isAjax()) {  
            if ($this->model->destroy($id)) {
                return ['code' => 2, 'msg' => "删除成功"];
            } else {
                return ['code' => 0, 'msg' => "删除失败"];
            }
        }
    }
}