这篇文章主要介绍了基于Codeigniter框架实现的student信息系统站点动态发布功能,详细分析了动态站点相关的数据库sql语句、MVC各个模块功能与实现技巧,需要的朋友可以参考下
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;
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: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: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'); } }
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