本文实例讲述了基于Codeigniter框架实现的student信息系统站点动态发布功能。分享给大家供大家参考,具体如下:
既然是动态站点,肯定有数据库表的存在,在此不废话,下面我们来看一下数据库表:
CREATE TABLE IF NOT EXISTS `student`(
 //主键id
 `id` int(11) NOT NULL AUTO_INCREMENT,
 //学生姓名
 `s_name` varchar(64) NOT NULL,
 //学生家长的姓名
 `p_name` varchar(64) NOT NULL,
 //学生的家庭住址
 `address` varchar(100) NOT NULL,
 //所在城市
 `city` varchar(30) NOT NULL,
 //所在国家
 `state` varchar(30) NOT NULL,
 //所在地区的邮政编码
 `zip` varchar(20) NOT NULL,
 //电话
 `phone` varchar(15) NOT NULL,
 //邮件
 `email` varchar(20) NOT NULL,
 //主键设置
 PRIMARY KEY(`id`)
)ENGINE=INNODB DEFAULT CHARSET=UTF8 AUTO_INCREMENT=1;
*注:在此我有两个地方需要解释一下:
1."IF NOT EXISTS":如果数据在创建表的时候,在前面加上了"IF NOT EXISTS",那就表明即使此表已经存在,也会执行成功;
2."ENGINE=INNODB":这个是数据库的引擎设置,常用mysql数据库引擎有ISAM,MYISAM,HEAP等;
具体参考资料:http://baike.baidu.com/view/68455.htm
在创建完数据表之后,我们再来看一下数据库的连接。打开.\application\config\database.php文件,在内设置数据库变量参数,在.\application\config\config.php文件内设置基本的URL,对于我的基本url是:http://localhost/codeigniter/
下面我们来看看mvc思想架构的设计
首先打开.application\controllers\文件目录,在里面创建一个student.php控制器:
student.php
在此我们先来通过student这个控制器来测试一下,打印出helloworld,记住访问路径是:http://localhost/codeigniter/index.php/student/index
class student extends CI_Controller{
 //student controller construct
 public function __construct(){
 parent::__construct();
 }
 //index test function
 public function index(){
 echo "helloworld";
 }
}
it output: helloworld
下面我们来换一下,看看下面这段code:
class student extends CI_Controller{
 //student controller
 public function __construct(){
 parent::__construct();
 }
 //define a array,name is arraydata, it have three parameters
 protected $arraydata=array(
 'title'=>'Classroom:Home page',
 'headline'=>'welcome to the classroom Mangement System',
 'include'=>'student_index'
 );
 //index function
 public function index(){
 $this->load->view('template',$this->arraydata);
 }
}
这段代码需要一个视图,template.php
template.php:
<!DOCTYPE html PUBLIC '-//W3C//DTD HTML 4.01 Strict//EN' 'http://www.w3.org/TR/html4/strict.dtd'>
<html>
<head>
<meta http-equiv='Content-Type' content='text/html; charset=utf-8'>
<title><?php echo $title; ?></title>
</head>
<body>
 <h1><?php echo $headline; ?></h1>
 <?php $this->load->view($include)?>
</body>
</html>
其中:
this−>load−>view(include);包含的是另外一个视图文件studen_index.php文件
student_index.php:
<p>Congratulations. Your initial setup is complete!</p>
联合输出:
welcome to the classroom Mangement System
Congratulations. Your initial setup is complete!
数据的CURD
C 控制器
先来看看数据的增加过程,在student控制器中增加一个add()方法
class student extends CI_Controller{
 //student controller
 public function __construct(){
 parent::__construct();
 }
 //new add function
 public function add(){
 $this->load->helper('form');
 //display information for the view
 $data['title']='Classroom:Add Page';
 $data['headline']='Add data';
 $data['include']='student_add';
 //upload view
 $this->load->view('template',$data);
 }
 //create function
 public function create(){
 $this->load->helper('url');
 $this->load->model('MStudent','',TRUE);
 $this->MStudent->addData($_POST);
 redirect('student/add','reflesh');
 }
 //update function
 public function update(){
 //upload codeigniter library
 $this->load->library('table');
 $this->load->model('MStudent','',TRUE);
 $student_query=$this->MStudent->updateData();
 $update_table=$this->table->generate($student_query);
 //display information for the view
 $data['title']='Classroom:Update Page';
 $data['headline']='Update Page';
 $data['include']='update_student';
 $data['updatetable']=$update_table;
 $this->load->view('template',$data);
 }
 //index function
 public function index(){
 $data['title']='Classroom:Home page';
 $data['headline']='welcome to classroom Mangement System';
 $data['include']='student_index';
 $this->load->view('template',$this->arraydata);
 }
}
V 视图
template .php
<html>
 <head>
 <title><?php echo $title;?></title>
 </head>
 <body>
 <h1><?php echo $headline ?></h1>
 <?php $this->load->view($include)?>
 </body>
</html>
student_add.php
<?php
 echo form_open('student/create');
 $field_name=array('s_name','p_name','address','city','state','zip','phone','email');
 foreach($field_name as $value){
 echo "<p>".$value.":"
 echo form_input(array('name'=>$value));
 echo "</p>"
 }
 form_submit('','Add');
 form_close();
?>
update_student.php
<?php
 echo $updatetable;
?>
M 模型
class MStudent extends CI_Model{
 public function addData($data){
 $this->db->insert('student',$data);
 }
 public function updateData(){
 $this->db->get('student');
 }
}