我想要知道自定义的对象,怎么在CI里面方便的使用
以前习惯了自己随便定义对象来使用,里面有构造方法,get,set方法之类的,但是MVC模式下的CI框架的model层的对象貌似不能够在初始化的时候调用构造函数传入数据进去,先贴我以前的代码:<?php
class Exercise {
protected $id;
protected $content;
protected $answer;
protected $ischecked;
protected $e_difficulty_id;
protected $er_knowledgepoint_id;
protected $e_exercisetype_id;
protected $er_teacher_id;
protected $e_subject_id;
public function __construct($data) {
foreach ($data as $key => $value) {
$this->$key = $value;
}
}
public function __get($property_name) {
if (isset($this->$property_name)) {
return ($this->$property_name);
} else {
return (NULL);
}
}
public function __set($property_name, $value) {
$this->$property_name = $value;
}
}
以前在创建对象的时候直接$exercise = new Exercise($data);对象就创建好了,但是现在用CI,我想要直接把这样的代码放到model层去,全部放到一个对象里面进行操作,而且在Controller层也可以直接用到这一个对象来进行操作。
现在我的方法是把这些自定义的类的代码专门放到一个目录下,然后在Controller中include进去,这样就可以new 我的对象了。。但是这样做就不能很好的体现CI的model的用处了。感觉CI的model是面向过程的,视频教程里面的那些也是基本都是在model里面直接写的方法然后调用,都没看到在model里面初始化数据,面向对象的进行编程。。。
CI是自动初始化的,你可能需要定义个init($data)函数做你的构造函数的事情。
就是model的代码为
function __construct() {
parent::__construct();
}
function init($data) {
foreach ($data as $key => $value) {
$this->$key = $value;
}
}
然后调用的时候
$this->exercise->init($data)
不知道你是否需要这样一个结果。 model
<?php
class Exercise extends CI_Model {
protected $id;
protected $content;
protected $answer;
protected $ischecked;
protected $e_difficulty_id;
protected $er_knowledgepoint_id;
protected $e_exercisetype_id;
protected $er_teacher_id;
protected $e_subject_id;
public function __construct($data) {
parent::__construct();
foreach ($data as $key => $value) {
$this->$key = $value;
}
}
public function __get($property_name) {
if (isset($this->$property_name)) {
return ($this->$property_name);
} else {
return (NULL);
}
}
public function __set($property_name, $value) {
$this->$property_name = $value;
}
}
controller
class Exercisemanager extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->model('exercise');
}
public function index() {
$this->exercise->__construct();
//some code deal with exercise
}
}
把你的对象改造成类库或者是模型。
你有两条路:
1. 改造成 CI 的方式。
2. 直接 include
建议改造成 CI 的方式。 呵呵,谢谢大神们的指点~几种方法都行啊~ 我使用的是扩展model的办法
在core下面新建MY_Loader.php
<?phpif ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* MY_Model Class
* @author 57sy.com QQ:821200318
*/
class MY_Loader extends CI_Loader
{
/**
* Model Loader扩展CI的model
*
* This function lets users load and instantiate models.
*
* @param string the name of the class
* @param string name for the model
* @param bool database connection
* @param string array('type'=>'real_data') 调用哪个数据库, 此处还可以传递别的参数,增加即可
* @return void
*/
public function model($model, $name = '', $db_conn = FALSE , $type_str = array('type'=>'real_data') )
{
if (is_array($model))
{
foreach ($model as $babe)
{
$this->model($babe);
}
return;
}
if ($model == '')
{
return;
}
$path = '';
// Is the model in a sub-folder? If so, parse out the filename and path.
if (($last_slash = strrpos($model, '/')) !== FALSE)
{
// The path is in front of the last slash
$path = substr($model, 0, $last_slash + 1);
// And the model name behind it
$model = substr($model, $last_slash + 1);
}
if ($name == '')
{
$name = $model;
}
if (in_array($name, $this->_ci_models, TRUE))
{
return;
}
$CI =& get_instance();
if (isset($CI->$name))
{
show_error('The model name you are loading is the name of a resource that is already being used: '.$name);
}
$model = strtolower($model);
foreach ($this->_ci_model_paths as $mod_path)
{
if ( ! file_exists($mod_path.'models/'.$path.$model.'.php'))
{
continue;
}
if ($db_conn !== FALSE AND ! class_exists('CI_DB'))
{
if ($db_conn === TRUE)
{
$db_conn = '';
}
$CI->load->database($db_conn, FALSE, TRUE);
}
if ( ! class_exists('CI_Model'))
{
load_class('Model', 'core');
}
require_once($mod_path.'models/'.$path.$model.'.php');
$model = ucfirst($model);
$CI->$name = new $model($type_str);
$this->_ci_models[] = $name;
return;
}
// couldn't find the model
show_error('Unable to locate the model you have specified: '.$model);
}
}
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