usky-website/web/application/controllers/admin/index.php

<?php
!defined('BASEPATH') && exit('No direct script access allowed');

class Index extends MY_Admin_Controller
{
    protected $check_access = false;

    public function __construct()
    {
        parent::__construct();
        $this->load->model('admin_model','admin');
        $this->load->model('homepage_model','homepage');
        $this->load->model('web_setting_model','web_setting');
    }

    public function index()
    {
        if(!$this->checkAdminLogin())
        {
            $this->load->view('adminLoginView');    
        } else {
            $items = $this->homepage->all();
            $data['items'] = $items;
            $this->load->view('indexView' , $data);     
        }
    }

    public function add()
    {
        
        $action = $this->input->get('action');

        if($action == 'insert'){
            $_POST[]      =   $this->security->xss_clean($_POST);
            $parm['name'] = trim($_POST['name']);
            $parm['url']  = trim($_POST['url']);
            $parm['ord']  = $this->homepage->max_ord() + 1;
            if($this->homepage->insert($parm)){
                exit('<script language="javascript">alert("添加成功"); document.location.href="'.ADMIN_PATH.'";</script>');
                }
            else
                exit('<script language="javascript">alert("添加失败"); document.location.href="'.ADMIN_PATH.'";</script>');
        }
        $this->load->view('indexAddView'); 
    }

    public function edit()
    {
        $id     = $this->input->get('id' , true);
        $action = $this->input->get('action');

        if($action == 'update'){
            $_POST[]      =   $this->security->xss_clean($_POST);
            $id           = trim($_POST['id']);
            $parm['name'] = trim($_POST['name']);
            $parm['url']  = trim($_POST['url']);
            if($this->homepage->update($id , $parm)){
                exit('<script language="javascript">alert("更新成功"); document.location.href="'.ADMIN_PATH.'";</script>');
                }
            else
                exit('<script language="javascript">alert("更新失败"); document.location.href="'.ADMIN_PATH.'";</script>');
        }
        $item         = $this->homepage->get($id);
        $data['item'] = $item;
        $this->load->view('indexEditView' , $data); 
    }

    public function del()
    {
        $id     = $this->input->get('id' , true);
        if($this->homepage->delete($id)){
            exit('<script language="javascript">alert("删除成功"); document.location.href="'.ADMIN_PATH.'";</script>');
        }
        else
            exit('<script language="javascript">alert("删除失败"); document.location.href="'.ADMIN_PATH.'";</script>');
    }

   public function update_ord()
   {    
        $id   = $this->input->get('id' , true);
        $last_id   = $this->input->get('last_id' , true);
        $parm = $this->homepage->get($id);
        $parm1 = $this->homepage->get($last_id);
        $temp = $parm['ord'];
        $parm['ord'] = $parm1['ord'];
        $parm1['ord'] = $temp;
        if($this->homepage->update($id , $parm) && $this->homepage->update($last_id , $parm1)){
            exit('<script language="javascript"> document.location.href="'.ADMIN_PATH.'";</script>');
        }
        else
            exit('<script language="javascript">alert("失败"); document.location.href="'.ADMIN_PATH.'";</script>');
   }


   public function slider()
   {
        $action = $this->input->get('action');
        $name = 'slider';

        if($action == 'update'){
            $_POST[] =   $this->security->xss_clean($_POST);
            if (is_array($_POST['url']) && count($_POST['url']) > 0) {
                foreach ($_POST['url'] as $key => $value) {
                    $t['url'] = $value;
                    $t['img'] = $_POST['img'][$key];
                    $parm[] = $t;
                }
                if($this->web_setting->update($name , array("name"=>$name, "value"=>json_encode($parm)))){
                    exit('<script language="javascript">alert("更新成功"); document.location.href="'.ADMIN_PATH.'/index/slider";</script>');
                    }
                else
                    exit('<script language="javascript">alert("更新失败"); document.location.href="'.ADMIN_PATH.'/index/slider";</script>');
            }
        }
        $item =  $this->web_setting->getValueByName($name);

        $data['item'] = json_decode($item[0]['value'] , true);
        $this->load->view('indexSliderView' , $data); 
       
   }

}