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.applicationconfigdatabase.php文件,在内设置数据库变量参数,在.applicationconfigconfig.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.applicationcontrollers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 SystemCongratulations. 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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