问一下各位，登录问题哦

kevin0171 发表于 2011-7-13 15:25:42

我想用codeigniter框架写一个登录注册的代码，刚看这框架有点摸不到头脑，有谁能帮我发过来一个，我看看研究一下

longjianghu 发表于 2011-7-13 15:41:58

1.把用户输入的用户名密码到数据库查询一下是否有对应的记录。
2.如果有记录生成session,没有跳出
3.跳转到相应页面

Ben 发表于 2011-7-13 16:36:17

统一楼上,这样可能简单点,可能新手还是不知道如何来写

kevin0171 发表于 2011-7-15 11:27:49

Ben 发表于 2011-7-13 16:36 static/image/common/back.gif
统一楼上,这样可能简单点,可能新手还是不知道如何来写

能不能给个代码，我看看什么样

√__豿艉騲℡ 发表于 2011-7-16 14:48:19

本帖最后由 √__豿艉騲℡ 于 2011-7-16 14:55 编辑

昨天刚刚也在弄登陆注册。
本人新手菜鸟，欢迎高手指导……
Controller
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class User extends CI_Controller {
/**
* CLASS USER 构造函数
*
* @access public
* @return void
*/
function __construct() {
   parent::__construct();
   header('Content-Type: text/html; charset=utf-8');
}
/**
* 登陆
*
* @access public
* @return void
*/
function login() {
   header('refresh:5; url=' . site_url());
   $this->form_validation->set_rules('username', '用户名', 'trim|required|min_length|max_length');
   $this->form_validation->set_rules('password', '密码', 'trim|required|min_length|max_length');
   if ($this->User_model->login() > 0) {
         echo '登陆成功';
   } else {
         echo '登陆失败';
   }
   echo anchor('', '立即返回');
}
/**
* 加载注册视图
*
* @access public
* @return void
*/
function registration() {
   $this->load->view('registration_view');
}
/**
* 注册
*
* @access public
* @return void
*/
function regist() {
   $this->form_validation->set_error_delimiters('<div class="error">', '</div>');
   $this->form_validation->set_rules('username', '用户名', 'trim|required|min_length|max_length|xss_clean|callback_username_check');
   $this->form_validation->set_rules('password', '密码', 'trim|required|min_length|max_length');
   $this->form_validation->set_rules('passconf', '确认密码', 'trim|required|matches');
   if ($this->form_validation->run() == FALSE) {
         $this->load->view('registration_view');
   } else {
         header('refresh:5; url=' . site_url());
         if ($this->User_model->regist()) {
            echo '注册成功.';
         } else {
            echo '注册失败.';
         }
         echo anchor('', '立即返回.');
   }
}
/**
* 检查用户名是否存在
*
* @access public
* @param mixed $str
* @return bool
*/
function username_check($str) {
   if ($this->User_model->isusername($str) > 0) {
         $this->form_validation->set_message('username_check', $str . ' 已注册.');
         $bool = false;
   } else {
         $bool = true;
   }
   return $bool;
}
/**
* 会员登出
*
* @access public
* @return void
*/
function logout() {
   $this->session->sess_destroy();
   header('refresh:5; url=' . site_url());
   echo '已退出.' . anchor('', '立即返回.');
}
}

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

class User_model extends CI_Model {
/**
* 会员登陆函数
*
* @access public
* @param string $table
* @return Int
*/
function login($table = 'user') {
   $username = $this->input->post('username');
   $password = $this->input->post('password');
   $this->db->where('username', $username);
   $this->db->where('password', $password);
   $query = $this->db->get($table);
   if ($query->num_rows() > 0) {
         $row = $query->row();
         $newdata = array(
               'username'=> $row->username,
               'logged_in' => TRUE
            );
         $this->session->set_userdata($newdata);
   }
   return $query->num_rows();
}
/**
* 会员注册函数
*
* @access public
* @param string $table
* @return TRUE/FALSE
*/
function regist($table = 'user') {
   $data = array(
         'username' => $this->input->post('username'),
         'password' => $this->input->post('password')
   );
   return $this->db->insert($table, $data);
}
/**
* 判断用户名是否存在
*
* @access public
* @param mixed $username
* @param string $table
* @return void
*/
function isusername($username, $table = 'user') {
   $this->db->where('username', $username);
   $query = $this->db->get($table);
   return $query->num_rows();
}
}

√__豿艉騲℡ 发表于 2011-7-16 15:00:36

config/autoload.php
/*
| -------------------------------------------------------------------
|Auto-load Libraries
| -------------------------------------------------------------------
| These are the classes located in the system/libraries folder
| or in your application/libraries folder.
|
| Prototype:
|
| $autoload['libraries'] = array('database', 'session', 'xmlrpc');
*/

$autoload['libraries'] = array('database', 'table', 'pagination', 'form_validation', 'session', 'encrypt');

/*
| -------------------------------------------------------------------
|Auto-load Helper Files
| -------------------------------------------------------------------
| Prototype:
|
| $autoload['helper'] = array('url', 'file');
*/

$autoload['helper'] = array('form', 'url');

/*
| -------------------------------------------------------------------
|Auto-load Models
| -------------------------------------------------------------------
| Prototype:
|
| $autoload['model'] = array('model1', 'model2');
|
*/

$autoload['model'] = array('Message_model', 'User_model');

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问一下各位，登录问题哦