小弟我第一次学习php,第一次用codeigniter编写demo,自己动手学习写东西总能够发现很多新知识。一下是小弟写的一个留言板的demo,请大家多多指教。
1、留言板的model类,与数据交互。
- <?php
- /**
- * 描述:留言板model类
- * author:xuzw13@gmail.com
- * */
- class Guestbook_model extends CI_Model{
- const TBL_GB = 'guestbook';
- function __construct()
- {
- parent::__construct();
- $this->load->database();
- }
- function getGuestbooks()
- {
- $sql = "SELECT * FROM ".self::TBL_GB;
- $query = $this->db->query($sql);
- //返回条数
- $numRow = $query->num_rows();
- $resultRow = $query->result_array();
- return array('numRow'=>$numRow,'resultRow'=>$resultRow);
- }
- function get_guestbook($_id)
- {
- $sql = "SELECT * FROM ".self::TBL_GB." where id=?";
- $query = $this->db->query($sql,array($_id));
- return $query->result_array();
- }
- /*query方式实现插入*/
- function add_guestbook($arrs)
- {
- $sql = "insert into ".self::TBL_GB."(title,content,addtime) values (?,?,now())";
- $query = $this->db->query($sql,$arrs);
- return $this->db->affected_rows();
- }
- /*query方式实现插入*/
- function add_guestbook_active($arrs)
- {
- $this->db->insert(self::TBL_GB,$arrs);
- return $this->db->affected_rows();
- }
- function edit_guestbook($arrs)
- {
- $sql = "update ".self::TBL_GB." set title=?,content=? where id=?";
- $query = $this->db->query($sql,$arrs);
- return $this->db->affected_rows();
- }
- function delete_guestbook($_id)
- {
- $this->db->where('id',$_id);
- $this->db->delete(self::TBL_GB);
- }
- }
- /*End of guestbook_model.php */
- /*Location: /application/models/guestbook_model.php */
2、留言板的controller类,处理页面请求等。
- <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
- /**
- * 描述:留言板controller类
- * author:xuzw13@gmail.com
- * */
- class Guestbook extends CI_Controller{
- public function __construct()
- {
- parent::__construct();
- $this->load->helper(array('form','url')); //加载辅助函数
- $this->load->model('Guestbook_model');
- $this->load->library('form_validation'); //表单验证类
- }
- function index()
- {
- header("Content-type:text/html;charset=utf-8");
- $data['title'] = 'CI-留言板首页';
- $result = $this->Guestbook_model->getGuestbooks();
- $data['guestbooks'] = $result;
- $this->load->view('guestbook/header',$data);
- $this->load->view('guestbook/index',$data);
- $this->load->view('guestbook/footer.html');
- }
- /*添加留言界面*/
- function add()
- {
- header("Content-type:text/html;charset=utf-8");
- $data['title'] = 'CI-留言板首页';
- $this->load->view('guestbook/header',$data);
- $this->load->view('guestbook/add');
- $this->load->view('guestbook/footer.html');
- }
- /*添加留言数据处理*/
- function add_guestbook()
- {
- header("Content-type:text/html;charset=utf-8");
- $data['title'] = 'CI-留言板首页';
- $this->form_validation->set_rules('title','Title','required');
- $this->form_validation->set_rules('content','Content','required');
- if($this->form_validation->run() == FALSE)
- {
- $data['title'] = 'CI-留言板首页';
- $data['errors'] = validation_errors();
- $this->load->view('guestbook/header',$data);
- $this->load->view('guestbook/add');
- $this->load->view('guestbook/footer.html');
- }
- else
- {
- /*$data = array($this->input->post('title'),$this->input->post('content'));
- $result = $this->Guestbook_model->add_guestbook($data);*/
- $data = array('title' => $this->input->post('title'),
- 'content' => $this->input->post('content'));
- $result = $this->Guestbook_model->add_guestbook_active($data);
- redirect(site_url('guestbook'));
- }
- }
- /*修改页面*/
- function edit($_id)
- {
- header("Content-type:text/html;charset=utf-8");
- $data['title'] = 'CI-留言板修改信息页面';
- $result = $this->Guestbook_model->get_guestbook($_id);
- $data['result'] = $result[0];
- $this->load->view('guestbook/header',$data);
- $this->load->view('guestbook/edit',$data);
- $this->load->view('guestbook/footer.html');
- }
- /**
- * 修改留言信息
- * */
- function edit_guestbook()
- {
- header("Content-type:text/html;charset=utf-8");
- $data['title'] = 'CI-留言板首页';
- $this->form_validation->set_rules('title','标题','required');
- $this->form_validation->set_rules('content','内容','required');
- if($this->form_validation->run() == FALSE)
- {
- $data['title'] = 'CI-留言板首页';
- $data['errors'] = validation_errors();
- $this->load->view('guestbook/header',$data);
- $this->load->view('guestbook/edit');
- $this->load->view('guestbook/footer.html');
- }
- else
- {
- $data = array($this->input->post('title'),
- $this->input->post('content'),
- $this->input->post('hid'));
- $result = $this->Guestbook_model->edit_guestbook($data);
- redirect(site_url('guestbook'));
- }
- }
- /*删除留言信息*/
- function delete($_id)
- {
- $result = $this->Guestbook_model->delete_guestbook($_id);
- redirect(site_url('guestbook'));
- }
- }
- /*End of guestbook.php */
- /*Location: /application/controllers/guestbook.php */
以上是简单留言板核心的代码,很多地方写的不好,请大家多多指教。
以下是源码,请大家多多指教!
本文转自xuzw13 51CTO博客,原文链接:http://blog.51cto.com/xuzhiwei/1133038,如需转载请自行联系原作者