不能用条令在CodeIgniter中加载模型

我一直在试用CodeIgniter。到目前为止,我喜欢。我决定也尝试一下理论,因为我听说了很多关于ORM的东西,而且这个理论很好。我找到了一些教程:

• phpandstuff blog
• medryx blog
• Doctrine Cookbook
• CodeIgniter wiki

我已经尝试了所有的方法,我在那些尝试建立一个工作条令安装,但我仍然无法得到我的模型加载。所有这些文档中的一个共同点是,它们都是旧版本,引用了document和/或CI的旧版本,甚至连doctine自己的文档都引用了0.11版本。我使用的是CodeIgniter-1.7.2和document-1.2.3。

有人有最新的文件吗?有人能看出下面的代码哪里出错了吗?这是基于phpandstuff链接。

File Structure
root
   \_system
        \_application
            \_config
            \_controllers
            \_models
            \_views
        \_plugins
            \_doctrine
                \_lib
                    \_Doctrine.php
            \_doctrine_pi.php

系统/插件/条令_圆周率.php

// load Doctrine library
require_once BASEPATH.'/plugins/doctrine/lib/Doctrine.php';

// load database configuration from CodeIgniter
require_once APPPATH.'/config/database.php';

// this will allow Doctrine to load Model classes automatically

//below is the suggested method of loading models
//I also tried a user's suggestion of "modelsAutoload"
//spl_autoload_register(array('Doctrine', 'autoload'));
//spl_autoload_register(array('Doctrine_Core', 'modelsAutoload'));

// we load our database connections into Doctrine_Manager
// this loop allows us to use multiple connections later on
foreach ($db as $connection_name => $db_values) {

    // first we must convert to dsn format
    $dsn = $db[$connection_name]['dbdriver'] .
        '://' . $db[$connection_name]['username'] .
        ':' . $db[$connection_name]['password'].
        '@' . $db[$connection_name]['hostname'] .
        '/' . $db[$connection_name]['database'];

    Doctrine_Manager::connection($dsn,$connection_name);
}

// CodeIgniter's Model class needs to be loaded
require_once BASEPATH.'/libraries/Model.php';

// telling Doctrine where our models are located
//Below is another user's suggestion, this also fails
//within my setup.
spl_autoload_register(array('Doctrine', 'autoload'));
spl_autoload_register(array('Doctrine', 'modelsAutoload'));
$manager = Doctrine_Manager::getInstance();

$manager->setAttribute(Doctrine::ATTR_MODEL_LOADING, Doctrine::MODEL_LOADING_CONSERVATIVE);
$manager->setAttribute(Doctrine::ATTR_AUTOLOAD_TABLE_CLASSES, true);
$manager->setAttribute(Doctrine_Core::ATTR_AUTOLOAD_TABLE_CLASSES, true);
Doctrine::loadModels(APPPATH.'models');


// (OPTIONAL) CONFIGURATION BELOW

// this will allow us to use "mutators"
Doctrine_Manager::getInstance()->setAttribute(
    Doctrine::ATTR_AUTO_ACCESSOR_OVERRIDE, true);

// this sets all table columns to notnull and unsigned (for ints) by default
Doctrine_Manager::getInstance()->setAttribute(
    Doctrine::ATTR_DEFAULT_COLUMN_OPTIONS,
    array('notnull' => true, 'unsigned' => true));

// set the default primary key to be named 'id', integer, 4 bytes
Doctrine_Manager::getInstance()->setAttribute(
    Doctrine::ATTR_DEFAULT_IDENTIFIER_OPTIONS,
    array('name' => 'id', 'type' => 'integer', 'length' => 4));

从system/application/config/自动加载.php

/*
| -------------------------------------------------------------------
|  Auto-load Plugins
| -------------------------------------------------------------------
| Prototype:
|
|   $autoload['plugin'] = array('captcha', 'js_calendar');
*/

$autoload['plugin'] = array('doctrine');

class User extends Doctrine_Record {

    function __construct(){
        parent::__construct();
    }

    function setTableDefinition(){
        $this->hasDefinition("username", "string", 255);
        $this->hasDefinition("password", "string", 255);
    }

}

如果有人想见我的管制员或其他什么,请告诉我。 控制器只是 echo