基于Codeigniter框架实现的student信息系统站点动态

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:

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:

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:

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

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