Tools/application/admin/controller/Article.php

<?php
namespace app\admin\controller;
use think\Controller;
use think\Request;
use app\admin\model\ArticleModel;
class Article extends Base
{
     

    public function lst()//文章列表
    {   

        return view(); 
       
         
    }



    public function lst_data(Request $request){//文章列表json数据动态表格显示（分页）
        $user = new ArticleModel();
        $title = request()->param('title');//接收请求数据id
      
        $where='1=1';//没有搜索条件则默认查询所有数据
        if(!empty($title)){//不为空执行搜索条件，为空则跳过判断条件直接显示列表页，
            $where = ['title'=>$title];
        }   
        //数据表获取总记录数           
        $count = $user->where($where)->count();
        //获取每页显示的条数
        $limit= $request->param('limit');
        //获取当前页码
        $page= $request->param('page');
        //limit的起始位置
        $start=($page-1)*$limit;
        $list = $user
                ->limit("$start,$limit")
                ->where($where)
                ->select();
        //返回数据
        foreach ($list as $k => $v) {
            $list[$k]['time'] = date('Y-m-d H:i:s',$v['time']);
        }
        return ["code"=>0,"msg"=>"成功","count"=>$count,"data"=>$list];

    }

     public function add(){//添加
        $user = new ArticleModel();
        // $catename = db('cates')->select();
        if(request()->isPost()){
            $data = input('post.');
            if($_FILES['pic']['tmp_name']){//上传图片
                $data['pic']=$this->upload();//调用upload方法
            }else{
                 $data['pic']='';
            }
            $data['time']=time();

            $add=$user->insert($data);
            if($add){
                // $logger->info("添加成功");
                 echo  "<script>alert('添加信息成功!');window.parent.location.reload()</script>";//后台直接实现弹窗，操作完成并显示列表页
            }else{
                 echo  "<script>alert('添加信息失败');location.href='".url('article/add')."'</script>";
            }
        }
        // $this->assign([
        //     'catename'=>$catename,
        // ]);
        return view();
        
    }


    public function edit(){//编辑 
        $user = new ArticleModel();
        $id = input('id');
        // $catename = db('cates')->select();
        $db = $user->where('id',$id)->find();
        if(request()->isPost()){
            $data = input('post.');
            //处理图片上传
            if($_FILES['pic']['tmp_name']){
                $oldarticles=db('article')->field('pic')->find($data['id']);
                $oldarticleImg=ADMINIMG.$oldarticles['pic'];
                if(file_exists($oldarticleImg)){   
                    @unlink($oldarticleImg);
                }
                $data['pic']=$this->upload();
            }
            $data['time'] = time();
            $save=$user->update($data);
            if($save!==false){
                echo "<script>alert('修改信息成功!');window.parent.location.reload()</script>";//后台直接实现弹窗，操作完成并显示列表页
            }else{
                echo  "<script>alert('修改信息失败');location.href='".url('article/edit')."'</script>";
            }
        }
        $this->assign([
            'db'=>$db,
            // 'catename'=>$catename,
        ]);
        return view();
    } 
 

    public function del(){//删除
        $user = new ArticleModel();
        if(request()->isPost()){
            $id = input('id');
            //先删除本地文件夹的图片
            $pic=$user->field('pic')->where('id',$id)->find();
            if(!empty($pic)){//判断不为空
                $picSrc=ADMINIMG.$pic['pic'];
                if(file_exists($picSrc)){
                    @unlink($picSrc);
                }
            }
            
            //在删除数据库信息
            $del=$user->where('id',$id)->delete();
            if($del){
                return 1;//删除成功
                  
            }else{
                return 2;//删除失败
                
            }
        }


    } 

    public function pdel(){//批量删除
        $user = new ArticleModel();
        if(request()->isPost()){

            $id = input('post.');//接收前台id
            $ids = implode(',',$id);//将id用逗号进行隔开
            $where = [
                'id'=>['in',$ids],
            ];
            //批量删除本地图片
            $pic=$user->where($where)->column('pic');//查询满足条件的pic字段数组信息
            if(!empty($pic)){//判断不为空
                $pi = implode(',',$pic);//将pic(图片路径)字段用逗号进行隔开
                foreach ($pic as $value) {//将拆分的路径进行循环输出
                    $picSrc = ADMINIMG.$value;//将入口文件(public/index.php)定义的本地图片存放路径和$value(图片名称)进行拼接
                    if(file_exists($picSrc)){//如果该路径下有满足条件的图片名称则进行删除,file_exists():判断文件是否存在
                        @unlink($picSrc);//@unlink():删除图片
                    }  
                }
            }
            $list = $user->where($where)->delete();
            if($list){
               return 1;//删除成功
            }else{
                return 2;//删除失败    
            }
        }

    }



    //上传图片
    public function upload(){
        // 获取表单上传文件 例如上传了001.jpg
        $file = request()->file('pic');
        
        // 移动到框架应用根目录/public/uploads/ 目录下
        if($file){
            $info = $file->move(ROOT_PATH . 'public' . DS . 'static'. DS .'uploads');
            if($info){
                return $info->getSaveName();
            }else{
                // 上传失败获取错误信息
                echo $file->getError();die;
            }
        }
    }
       


 


        
}