mingde-bd/application/admin/controller/News.php

<?php
namespace app\admin\controller;
use think\Db;
class News extends Auth
{

    public function index(){
        if(request()->isAjax()){
            //分页参数
            $length = input('rows',10,'intval');   //每页条数
            $page = input('page',1,'intval');      //第几页
            $start = ($page - 1) * $length;     //分页开始位置
            //排序
            $sortRow = input('sidx','id','trim');      //排序列
            $sort = input('sord','desc','trim');        //排序方式
            $order = $sortRow.' '.$sort;

            $title = input('title','','trim');
            if($title){
                $map[] = ['title','like','%'.$title.'%'];
            }

            $cate_id = input('cate_id','','trim');
            if($cate_id){
                $map[] = ['cate_id','=',$cate_id];
            }

            $enable = input('enable','','trim');
            if($enable != ''){
                $map[] = ['enable','=',$enable];
            }

            $map[] = ['del','=',0];
            $map[] = ['org_id','=',cur_org_id()];
            $map= empty($map) ? true: $map;
            //数据查询
            $lists = Db::name('news')->limit($start,$length)->where($map)->order(['sort'=>'desc','id'=>'desc'])->select();
            foreach ($lists as $k=>$v){
                $lists[$k]['cateTitle'] = db('news_cate')->where('id',$v['cate_id'])->value('title');
                $lists[$k]['likeNum'] = db('news_like')->where('news_id',$v['id'])
                    ->group('user_id')->count();
            }

            //数据返回
            $totalCount = Db::name('news')->where($map)->count();
            $totalPage = ceil($totalCount/$length);
            $result['page'] = $page;
            $result['total'] = $totalPage;
            $result['records'] = $totalCount;
            $result['rows'] = $lists;
            return json($result);
        }else{
            $newsCate = db('news_cate')->where('org_id',cur_org_id())->select();
            $this->assign('newsCate',$newsCate);
            return $this->fetch();
        }

    }

    /**
     * 新增/编辑
     */
    public function add($id=0){
        if(request()->isPost()){
            $res = model('News')->updates();
            if($res){
                $this->success('操作成功',url('index'));
            }else{
                $this->error(model('News')->getError());
            }
        }else{
            $title = '新增';
            if($id){
                $title = '编辑';
                $info = Db::name('news')->where('id',$id)->find();
                $this->assign('info',$info);
            }
            $newsCate = Db::name('news_cate')->where('org_id',cur_org_id())->select();
            $this->assign('newsCate',$newsCate);
            $this->assign('title',$title);
            return $this->fetch();
        }
    }

    /**
     * 删除记录
     * @param int $id
     */
    public function del($id=0){
        if(!$id){
            $this->error('参数错误');
        }
        $res = Db::name('news')->where('id',$id)->setField('del',1);
        if($res){
            $this->success('删除成功');
        }else{
            $this->error('删除失败');
        }
    }

    /**
     * 改变字段值
     * @param int $fv
     * @param string $fn
     * @param int $fv
     */
    public function changeField($id=0,$fn='',$fv=0){
        if(!$fn||!$id){
            $this->error('参数错误');
        }
        $res = Db::name('news')->where('id',$id)->setField($fn,$fv);
        if($res){
            $this->success('操作成功');
        }else{
            $this->error('操作失败');
        }
    }

    /**
     * 排序
     * @param int $id
     * @param int $sort
     */
    public function changeSort($id=0,$sort=0){
        if($id<0||$sort<0){
            $this->error('参数错误');
        }
        $res = Db::name('news')->where('id',$id)->update(['sort'=>$sort]);
        if($res){
            $this->success('操作成功');
        }else{
            $this->error('操作失败');
        }
    }

}