一个基于Hex-HMVC的模型扩展
为什么要进行这个扩展？
在使用hex提供的HMVC扩展方案以来在模型方面一直有疑问，怎衡量模型放在相应modules/models下还是放app目录/models下？比如模块1中要调用user模型的get_all方法获取所有用户数据 模块2也要获取这些数据 那么若模块1,2的模型中都创建一个user模型实现各自的get_all方法会不会显得没有重用的味道？
通过在微博上询问@hex hex的评论启发了我，他说“感觉还需要有个模型继承的功能吧” 没错继承
于是paperen我尝试按照这个概念去在hex的HMVC基础上扩展这个功能，从而达到这个继承的模式
涉及文件
就一个MY_Loader.php
- core/MY_Loader.php
修改部分
341行加入
// @author paperen // 加载模块模块继承的原始模型 $this->_ci_basemodel( $model );
1131行加入
/**
* 加载模块继承的基础模型
* 若果模型名称是user_module_model代表要加载user_model模型
* 模块中模型要继承原始模型的名称必须是 模型名称_module_model 这种形式
* @author paperen
* @param string $base_model
*/
private function _ci_basemodel( $base_model ) {
$module_tag = 'module';
$tmp_arr = explode( '_', $base_model );
if ( !in_array( $module_tag, $tmp_arr ) ) return;
$model_arr = array( );
foreach ( $tmp_arr as $str ) {
if ( $str == $module_tag ) continue;
$model_arr[] = $str;
}
$model_name = implode( '_', $model_arr );
if ( empty( $model_name ) ) return;
$this->model( $model_name );
}
这样就能实现我们想象的模块模型可以继承基类模型，而规则就是若需要继承基类模型的话，模块中的模型命名规则必需是：模块名称_模型名称_module_model，比如以下这个模型
application/modules/user/models/user_module_model.php
class User_User_Module_model extends User_Model
{
public function test() {
echo '
' . __CLASS__ . ' ' . __FUNCTION__ . '
';
}
}
其是继承User_Model这个用户模型，paperen将其成为基类模型，该模型位于application/models中
applicaiton/models/user_model.php
class User_model extends CI_Model
{
public function get_all() {
echo '
' . __CLASS__ . ' ' . __FUNCTION__ . '
';
}
}
那么在任何模块的方法中(这里是user模块中的index方法)写上
class User_Index_Module extends CI_Module
{
public function index() {
// 加载模型
$this->load->model( 'user_module_model' );
// 调用来自user_model中的get_all
$this->user_module_model->get_all();
// 自身的方法test
$this->user_module_model->test();
}
}
结果是
User_model get_all User_User_Module_model test
这也表明成功了
关于这个扩展的要点
- 记住若要实现模块中的模型继承基类模型，那么该模块的模型命名必需带有module，而且是这种格式 模块名_需要继承的模型名_Module_model
- 若不需要继承基类模型，那么模块模型直接继承CI_Model好了，命名可以是 模块名_模型名_Module_model 或其他
关于模块中的模型为什么命名一定要加上模块名，这个原因我也不是太清楚，@hex当初设计可能是为了写代码的人一看就知道该模型属于那个模块的吧
有什么问题或者建议欢迎留言或者发邮件给paperen
以下是MY_Loader.php的代码，你也可以在paperen的gist上查看到 https://gist.github.com/3981712
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* 已扩展的 Loader 类库
*
* 此类库相对于原始 Loader 类库，主要是增加了对 HMVC 的支持
*
* @package CodeIgniter
* @subpackage Libraries
* @author Hex
* @category HMVC
* @link http://codeigniter.org.cn/forums/thread-1319-1-2.html
*/
class MY_Loader extends CI_Loader {
var $_ci_is_inside_module = false; // 当前是否是 Module 里的 Loader
var $_ci_module_path = ''; // 当前 Module 所在路径
var $_ci_module_class = ''; // 当前 Module 的控制器名
var $_ci_autoload_libraries = array(); // 自动装载的类库名数组
var $_ci_autoload_models = array(); // 自动装载的模型名数组
var $_ci_module_uri = ''; // 当前 Module 的调用 URI
var $_ci_module_method = ''; // 当前 Module 执行的方法
/**
* Constructor
*
* Sets the path to the view files and gets the initial output buffering level
*/
public function __construct()
{
parent::__construct();
log_message('debug', "MY_Loader Class Initialized");
}
// --------------------------------------------------------------------
/**
* Initialize the Loader
*
* This method is called once in CI_Controller.
*
* @param array
* @return object
*/
public function initialize()
{
// 必须在子类中做如下初始化，不可直接 parent::initialize()
$this----->_ci_classes = array();
$this->_ci_loaded_files = array();
$this->_ci_models = array();
$this->_base_classes =& is_loaded();
$this->_ci_autoloader();
return $this;
}
// --------------------------------------------------------------------
// Module 中的 Loader 类实例初始化时，自动调用此函数
public function _ci_module_ready($class_path, $class_name)
{
$this->_ci_is_inside_module = true;
$this->_ci_module_path = $class_path;
$this->_ci_module_class = $class_name;
$this->_ci_classes = array();
$this->_ci_loaded_files = array();
$this->_ci_models = array();
}
// --------------------------------------------------------------------
/**
* Module Loader
*
* This function lets users load and instantiate module.
*
* @access public
* @param string the module uri of the module
* @return void
*/
function module($module_uri, $vars = array(), $return = FALSE)
{
if ($module_uri == '')
{
return;
}
$module_uri = trim($module_uri, '/');
$CI =& get_instance();
$default_controller = $CI->router->default_controller;
if (strpos($module_uri, '/') === FALSE)
{
$path = '';
// 只有模块名，使用默认控制器和默认方法
$module = $module_uri;
$controller = $default_controller;
$method = 'index';
$segments = array();
}
else
{
$segments = explode('/', $module_uri);
if (file_exists(APPPATH.'modules/'.$segments[0].'/controllers/'.$segments[1].EXT))
{
$path = '';
$module = $segments[0];
$controller = $segments[1];
$method = isset($segments[2]) ? $segments[2] : 'index';
}
// 子目录下有模块？
elseif (is_dir(APPPATH.'modules/'.$segments[0].'/'.$segments[1].'/controllers'))
{
// Set the directory and remove it from the segment array
$path = $segments[0];
$segments = array_slice($segments, 1);
if (count($segments) > 0)
{
// 子目录下有模块？
if (is_dir(APPPATH.'modules/'.$path.'/'.$segments[0].'/controllers'))
{
$module = $segments[0];
$controller = isset($segments[1]) ? $segments[1] : $default_controller;
$method = isset($segments[2]) ? $segments[2] : 'index';
}
}
else
{
show_error('Unable to locate the module you have specified: '.$path);
}
}
else
{
show_error('Unable to locate the module you have specified: '.$module_uri);
}
if ($path != '')
{
$path = rtrim($path, '/') . '/';
}
}
// 模块名全部小写
$module = strtolower($module);
// 必须是类似这样的模块类名：目录_模块名_控制器名_module (如：Account_Message_Home_module)
$c = str_replace(' ', '_', ucwords(str_replace('_', ' ', $controller)));
$class_name = str_replace(' ', '_', ucwords(str_replace('/', ' ', $path.$module.' '.$c))) . '_module';
// Module 的控制器文件的路径
$controller_path = APPPATH.'modules/'.$path.$module.'/controllers/'.$controller.EXT;
if ( ! file_exists($controller_path))
{
show_error('Unable to locate the module you have specified: '.$path.$module.'/controllers/'.$controller.EXT);
}
if ( ! class_exists('CI_Module'))
{
require_once(APPPATH.'core/Module'.EXT);
}
if (!isset($CI->$class_name))
{
// 装载 Module 控制器文件
require_once($controller_path);
// 实例化 Module 控制器
$CI->$class_name = new $class_name();
// 注意：要操作模块里的 loader 类实例
$CI->$class_name->load->_ci_module_path = $path.$module;
$CI->$class_name->load->_ci_module_class = $class_name;
$CI->$class_name->_ci_module_uri = $path.$module.'/'.$controller;
$CI->$class_name->_ci_module_method = $method;
}
$module_load =& $CI->$class_name->load;
if (strncmp($method, '_', 1) != 0 && in_array(strtolower($method), array_map('strtolower', get_class_methods($class_name))))
{
ob_start();
log_message('debug', 'Module call: '.$class_name.'->'.$method);
// Call the requested method.
// Any URI segments present (besides the class/function) will be passed to the method for convenience
$output = call_user_func_array(array($CI->$class_name, $method), $module_load->_ci_object_to_array($vars));
if ($return === TRUE)
{
$buffer = ob_get_contents();
@ob_end_clean();
$result = ($output) ? $output : $buffer;
return $result;
}
else
{
if (ob_get_level() > $this->_ci_ob_level + 1)
{
ob_end_flush();
}
else
{
$buffer = ob_get_contents();
$result = ($output) ? $output : $buffer;
$CI->output->append_output($result);
@ob_end_clean();
}
}
}
else
{
show_error('Unable to locate the '.$method.' method you have specified: '.$class_name);
}
}
// --------------------------------------------------------------------
/**
* Model Loader
*
* This function lets users load and instantiate models.
*
* @access public
* @param string the name of the class
* @param string name for the model
* @param bool database connection
* @return void
*/
function model($model, $name = '', $db_conn = FALSE)
{
if (is_array($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();
$model_paths = $this->_ci_model_paths;
if ($this->_ci_is_inside_module)
{
$module_class_name = $this->_ci_module_class;
array_unshift($model_paths, APPPATH.'modules/'.$this->_ci_module_path.'/');
$module_model_name = str_replace(' ', '_', ucwords(str_replace('/', ' ', $this->_ci_module_path.' '.$model)));
if (isset($CI->$module_class_name->$name))
{
show_error('The model name you are loading is the name of a resource that is already being used: '.$module_class_name.'.'.$module_model_name);
}
}
else
{
if (isset($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 ($model_paths as $key=>$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');
}
// @author paperen
// 加载模块模块继承的原始模型
$this->_ci_basemodel( $model );
require_once($mod_path.'models/'.$path.$model.'.php');
$model = ucfirst($model);
if ($this->_ci_is_inside_module)
{
if ($key == 0)
{
$CI->$module_class_name->$name = new $module_model_name();
}
else
{
$CI->$module_class_name->$name = new $model();
}
}
else
{
$CI->$name = new $model();
}
$this->_ci_models[] = $name;
return;
}
// couldn't find the model
show_error('Unable to locate the model you have specified: '.$model);
}
// --------------------------------------------------------------------
/**
* Load View
*
* This function is used to load a "view" file. It has three parameters:
*
* 1. The name of the "view" file to be included.
* 2. An associative array of data to be extracted for use in the view.
* 3. TRUE/FALSE - whether to return the data or load it. In
* some cases it's advantageous to be able to return data so that
* a developer can process it in some way.
*
* @access public
* @param string
* @param array
* @param bool
* @return void
*/
function view($view, $vars = array(), $return = FALSE)
{
if ($this->_ci_is_inside_module)
{
$ext = pathinfo($view, PATHINFO_EXTENSION);
$view = ($ext == '') ? $view.EXT : $view;
$path = APPPATH.'modules/'.$this->_ci_module_path.'/views/'.$view;
if (file_exists($path))
{
return $this->_ci_load(array('_ci_view' => $view, '_ci_vars' => $this->_ci_object_to_array($vars), '_ci_path' => $path, '_ci_return' => $return));
}
else
{
return $this->_ci_load(array('_ci_view' => $view, '_ci_vars' => $this->_ci_object_to_array($vars), '_ci_return' => $return));
}
}
else
{
return $this->_ci_load(array('_ci_view' => $view, '_ci_vars' => $this->_ci_object_to_array($vars), '_ci_return' => $return));
}
}
// --------------------------------------------------------------------
/**
* 取当前 Module 某方法的 URL 地址
*
* @access public
* @param string 方法名/参数1/.../参数n
* @param string URL 中要替换的控制器名，为空使用当前控制器名
* @return string
*/
function module_url($uri, $controller_name = '')
{
$CI =& get_instance();
$class = $this->_ci_module_class;
$module_uri = trim($CI->$class->_ci_module_uri, '/');
if (!empty($controller_name))
{
$arr = explode('/', $module_uri);
$arr[count($arr) - 1] = str_replace(array('/', '.'), '', $controller_name);
$module_uri = implode('/', $arr);
}
return $this->config->site_url('module/' . $module_uri . '/' . trim($uri, '/'));
}
// --------------------------------------------------------------------
/**
* Database Loader
*
* @access public
* @param string the DB credentials
* @param bool whether to return the DB object
* @param bool whether to enable active record (this allows us to override the config setting)
* @return object
*/
function database($params = '', $return = FALSE, $active_record = NULL)
{
// Grab the super object
$CI =& get_instance();
// Do we even need to load the database class?
if (class_exists('CI_DB') AND $return == FALSE AND $active_record == NULL AND isset($CI->db) AND is_object($CI->db))
{
if ($this->_ci_is_inside_module and isset($CI->db))
{
$module_class_name = $this->_ci_module_class;
$CI->$module_class_name->db =& $CI->db;
}
return FALSE;
}
require_once(BASEPATH.'database/DB.php');
if ($return === TRUE)
{
return DB($params, $active_record);
}
// Initialize the db variable. Needed to prevent
// reference errors with some configurations
$CI->db = '';
// Load the DB class
$CI->db =& DB($params, $active_record);
if ($this->_ci_is_inside_module)
{
$module_class_name = $this->_ci_module_class;
$CI->$module_class_name->db =& $CI->db;
}
}
// --------------------------------------------------------------------
// 根据是否在模块中来取超级对象
private function &get_instance()
{
$CI =& get_instance();
if (!empty($this->_ci_module_path))
{
$module_class_name = $this->_ci_module_class;
return $CI->$module_class_name;
}
else
{
return $CI;
}
}
// --------------------------------------------------------------------
/**
* Class Loader
*
* This function lets users load and instantiate classes.
* It is designed to be called from a user's app controllers.
*
* @access public
* @param string the name of the class
* @param mixed the optional parameters
* @param string an optional object name
* @return void
*/
function library($library = '', $params = NULL, $object_name = NULL)
{
if (is_array($library))
{
foreach ($library as $class)
{
$this->library($class, $params);
}
return;
}
if ($library == '' OR isset($this->_base_classes[$library]))
{
return FALSE;
}
if ( ! is_null($params) && ! is_array($params))
{
$params = NULL;
}
$this->_ci_load_class($library, $params, $object_name);
}
// --------------------------------------------------------------------
/**
* Load the Utilities Class
*
* @access public
* @return string
*/
function dbutil()
{
if ( ! class_exists('CI_DB'))
{
$this->database();
}
$CI = $this->get_instance();
// for backwards compatibility, load dbforge so we can extend dbutils off it
// this use is deprecated and strongly discouraged
$CI->load->dbforge();
require_once(BASEPATH.'database/DB_utility.php');
require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_utility.php');
$class = 'CI_DB_'.$CI->db->dbdriver.'_utility';
$CI->dbutil = new $class();
}
// --------------------------------------------------------------------
/**
* Load the Database Forge Class
*
* @access public
* @return string
*/
function dbforge()
{
if ( ! class_exists('CI_DB'))
{
$this->database();
}
$CI = $this->get_instance();
require_once(BASEPATH.'database/DB_forge.php');
require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_forge.php');
$class = 'CI_DB_'.$CI->db->dbdriver.'_forge';
$CI->dbforge = new $class();
}
// --------------------------------------------------------------------
/**
* Loads a language file
*
* @access public
* @param array
* @param string
* @return void
*/
function language($file = array(), $lang = '')
{
$CI = $this->get_instance();
if ( ! is_array($file))
{
$file = array($file);
}
foreach ($file as $langfile)
{
$CI->lang->load($langfile, $lang);
}
}
// --------------------------------------------------------------------
/**
* Loads a config file
*
* @access public
* @param string
* @return void
*/
function config($file = '', $use_sections = FALSE, $fail_gracefully = FALSE)
{
$CI = $this->get_instance();
$CI->config->load($file, $use_sections, $fail_gracefully);
}
// --------------------------------------------------------------------
/**
* Loader
*
* This function is used to load views and files.
* Variables are prefixed with _ci_ to avoid symbol collision with
* variables made available to view files
*
* @access private
* @param array
* @return void
*/
function _ci_load($_ci_data)
{
// Set the default data variables
foreach (array('_ci_view', '_ci_vars', '_ci_path', '_ci_return') as $_ci_val)
{
$$_ci_val = ( ! isset($_ci_data[$_ci_val])) ? FALSE : $_ci_data[$_ci_val];
}
$file_exists = FALSE;
// Set the path to the requested file
if ($_ci_path != '')
{
$_ci_x = explode('/', $_ci_path);
$_ci_file = end($_ci_x);
}
else
{
$_ci_ext = pathinfo($_ci_view, PATHINFO_EXTENSION);
$_ci_file = ($_ci_ext == '') ? $_ci_view.'.php' : $_ci_view;
foreach ($this->_ci_view_paths as $view_file => $cascade)
{
if (file_exists($view_file.$_ci_file))
{
$_ci_path = $view_file.$_ci_file;
$file_exists = TRUE;
break;
}
if ( ! $cascade)
{
break;
}
}
}
if ( ! $file_exists && ! file_exists($_ci_path))
{
show_error('Unable to load the requested file: '.$_ci_file);
}
// This allows anything loaded using $this->load (views, files, etc.)
// to become accessible from within the Controller and Model functions.
$_ci_CI =& $this->get_instance();
foreach (get_object_vars($_ci_CI) as $_ci_key => $_ci_var)
{
if ( ! isset($this->$_ci_key))
{
$this->$_ci_key =& $_ci_CI->$_ci_key;
}
}
/*
* Extract and cache variables
*
* You can either set variables using the dedicated $this->load_vars()
* function or via the second parameter of this function. We'll merge
* the two types and cache them so that views that are embedded within
* other views can have access to these variables.
*/
if (is_array($_ci_vars))
{
$this->_ci_cached_vars = array_merge($this->_ci_cached_vars, $_ci_vars);
}
extract($this->_ci_cached_vars);
/*
* Buffer the output
*
* We buffer the output for two reasons:
* 1. Speed. You get a significant speed boost.
* 2. So that the final rendered template can be
* post-processed by the output class. Why do we
* need post processing? For one thing, in order to
* show the elapsed page load time. Unless we
* can intercept the content right before it's sent to
* the browser and then stop the timer it won't be accurate.
*/
ob_start();
// If the PHP installation does not support short tags we'll
// do a little string replacement, changing the short tags
// to standard PHP echo statements.
if ((bool) @ini_get('short_open_tag') === FALSE AND config_item('rewrite_short_tags') == TRUE)
{
echo eval('?>'.preg_replace("/;*\s*\?>/", "; ?>", str_replace(' $this->_ci_ob_level + 1)
{
ob_end_flush();
}
else
{
$_ci_CI->output->append_output(ob_get_contents());
@ob_end_clean();
}
}
// --------------------------------------------------------------------
/**
* Load class
*
* This function loads the requested class.
*
* @access private
* @param string the item that is being loaded
* @param mixed any additional parameters
* @param string an optional object name
* @return void
*/
function _ci_load_class($class, $params = NULL, $object_name = NULL)
{
// Get the class name, and while we're at it trim any slashes.
// The directory path can be included as part of the class name,
// but we don't want a leading slash
$class = str_replace('.php', '', trim($class, '/'));
// Was the path included with the class name?
// We look for a slash to determine this
$subdir = '';
if (($last_slash = strrpos($class, '/')) !== FALSE)
{
// Extract the path
$subdir = substr($class, 0, $last_slash + 1);
// Get the filename from the path
$class = substr($class, $last_slash + 1);
}
// We'll test for both lowercase and capitalized versions of the file name
foreach (array(ucfirst($class), strtolower($class)) as $class)
{
$subclass = APPPATH.'libraries/'.$subdir.config_item('subclass_prefix').$class.'.php';
// Is this a class extension request?
if (file_exists($subclass))
{
$baseclass = BASEPATH.'libraries/'.ucfirst($class).'.php';
if ( ! file_exists($baseclass))
{
log_message('error', "Unable to load the requested class: ".$class);
show_error("Unable to load the requested class: ".$class);
}
// Safety: Was the class already loaded by a previous call?
if (in_array($subclass, $this->_ci_loaded_files))
{
// Before we deem this to be a duplicate request, let's see
// if a custom object name is being supplied. If so, we'll
// return a new instance of the object
if ( ! is_null($object_name))
{
$CI = $this->get_instance();
if ( ! isset($CI->$object_name))
{
return $this->_ci_init_class($class, config_item('subclass_prefix'), $params, $object_name);
}
}
$is_duplicate = TRUE;
log_message('debug', $class." class already loaded. Second attempt ignored.");
return;
}
include_once($baseclass);
include_once($subclass);
$this->_ci_loaded_files[] = $subclass;
return $this->_ci_init_class($class, config_item('subclass_prefix'), $params, $object_name);
}
// Lets search for the requested library file and load it.
$is_duplicate = FALSE;
foreach ($this->_ci_library_paths as $path)
{
$filepath = $path.'libraries/'.$subdir.$class.'.php';
// Does the file exist? No? Bummer...
if ( ! file_exists($filepath))
{
continue;
}
// Safety: Was the class already loaded by a previous call?
if (in_array($filepath, $this->_ci_loaded_files))
{
// Before we deem this to be a duplicate request, let's see
// if a custom object name is being supplied. If so, we'll
// return a new instance of the object
if ( ! is_null($object_name))
{
$CI = $this->get_instance();
if ( ! isset($CI->$object_name))
{
return $this->_ci_init_class($class, '', $params, $object_name);
}
}
$is_duplicate = TRUE;
log_message('debug', $class." class already loaded. Second attempt ignored.");
return;
}
include_once($filepath);
$this->_ci_loaded_files[] = $filepath;
return $this->_ci_init_class($class, '', $params, $object_name);
}
} // END FOREACH
// One last attempt. Maybe the library is in a subdirectory, but it wasn't specified?
if ($subdir == '')
{
$path = strtolower($class).'/'.$class;
return $this->_ci_load_class($path, $params);
}
// If we got this far we were unable to find the requested class.
// We do not issue errors if the load call failed due to a duplicate request
if ($is_duplicate == FALSE)
{
log_message('error', "Unable to load the requested class: ".$class);
show_error("Unable to load the requested class: ".$class);
}
}
// --------------------------------------------------------------------
/**
* Instantiates a class
*
* @access private
* @param string
* @param string
* @param string an optional object name
* @return null
*/
function _ci_init_class($class, $prefix = '', $config = FALSE, $object_name = NULL)
{
// Is there an associated config file for this class? Note: these should always be lowercase
if ($config === NULL)
{
// Fetch the config paths containing any package paths
$config_component = $this->_ci_get_component('config');
if (is_array($config_component->_config_paths))
{
// Break on the first found file, thus package files
// are not overridden by default paths
foreach ($config_component->_config_paths as $path)
{
// We test for both uppercase and lowercase, for servers that
// are case-sensitive with regard to file names. Check for environment
// first, global next
if (defined('ENVIRONMENT') AND file_exists($path .'config/'.ENVIRONMENT.'/'.strtolower($class).'.php'))
{
include_once($path .'config/'.ENVIRONMENT.'/'.strtolower($class).'.php');
break;
}
elseif (defined('ENVIRONMENT') AND file_exists($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'php'))
{
include_once($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php');
break;
}
elseif (file_exists($path .'config/'.strtolower($class).'.php'))
{
include_once($path .'config/'.strtolower($class).'.php');
break;
}
elseif (file_exists($path .'config/'.ucfirst(strtolower($class)).'.php'))
{
include_once($path .'config/'.ucfirst(strtolower($class)).'.php');
break;
}
}
}
}
if ($prefix == '')
{
if (class_exists('CI_'.$class))
{
$name = 'CI_'.$class;
}
elseif (class_exists(config_item('subclass_prefix').$class))
{
$name = config_item('subclass_prefix').$class;
}
else
{
$name = $class;
}
}
else
{
$name = $prefix.$class;
}
// Is the class name valid?
if ( ! class_exists($name))
{
log_message('error', "Non-existent class: ".$name);
show_error("Non-existent class: ".$class);
}
// Set the variable name we will assign the class to
// Was a custom class name supplied? If so we'll use it
$class = strtolower($class);
if (is_null($object_name))
{
$classvar = ( ! isset($this->_ci_varmap[$class])) ? $class : $this->_ci_varmap[$class];
}
else
{
$classvar = $object_name;
}
// Save the class name and object name
$this->_ci_classes[$class] = $classvar;
// Instantiate the class
$CI = $this->get_instance();
if ($config !== NULL)
{
$CI->$classvar = new $name($config);
}
else
{
$CI->$classvar = new $name;
}
}
// --------------------------------------------------------------------
/**
* Autoloader
*
* The config/autoload.php file contains an array that permits sub-systems,
* libraries, and helpers to be loaded automatically.
*
* @access private
* @param array
* @return void
*/
private function _ci_autoloader()
{
if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/autoload.php'))
{
include_once(APPPATH.'config/'.ENVIRONMENT.'/autoload.php');
}
else
{
include_once(APPPATH.'config/autoload.php');
}
if ( ! isset($autoload))
{
return FALSE;
}
// Autoload packages
if (isset($autoload['packages']))
{
foreach ($autoload['packages'] as $package_path)
{
$this->add_package_path($package_path);
}
}
// Load any custom config file
if (count($autoload['config']) > 0)
{
$CI = $this->get_instance();
foreach ($autoload['config'] as $key => $val)
{
$CI->config->load($val);
}
}
// Autoload helpers and languages
foreach (array('helper', 'language') as $type)
{
if (isset($autoload[$type]) AND count($autoload[$type]) > 0)
{
$this->$type($autoload[$type]);
}
}
// A little tweak to remain backward compatible
// The $autoload['core'] item was deprecated
if ( ! isset($autoload['libraries']) AND isset($autoload['core']))
{
$autoload['libraries'] = $autoload['core'];
}
// Load libraries
if (isset($autoload['libraries']) AND count($autoload['libraries']) > 0)
{
// Load the database driver.
if (in_array('database', $autoload['libraries']))
{
$this->database();
$autoload['libraries'] = array_diff($autoload['libraries'], array('database'));
}
// Load all other libraries
foreach ($autoload['libraries'] as $item)
{
$this->library($item);
}
$this->_ci_autoload_libraries = $autoload['libraries'];
}
// Autoload models
if (isset($autoload['model']))
{
$this->model($autoload['model']);
$this->_ci_autoload_models = $autoload['model'];
}
}
// --------------------------------------------------------------------
/**
* Get a reference to a specific library or model
*
* @access private
* @return bool
*/
public function &_ci_get_component($component)
{
$CI = $this->get_instance();
return $CI->$component;
}
// --------------------------------------------------------------------
// 获取 _base_classes 属性
public function get_base_classes()
{
return $this->_base_classes;
}
/**
* 加载模块继承的基础模型
* 若果模型名称是user_module_model代表要加载user_model模型
* 模块中模型要继承原始模型的名称必须是 模型名称_module_model 这种形式
* @author paperen
* @param string $base_model
*/
private function _ci_basemodel( $base_model ) {
$module_tag = 'module';
$tmp_arr = explode( '_', $base_model );
if ( !in_array( $module_tag, $tmp_arr ) ) return;
$model_arr = array( );
foreach ( $tmp_arr as $str ) {
if ( $str == $module_tag ) continue;
$model_arr[] = $str;
}
$model_name = implode( '_', $model_arr );
if ( empty( $model_name ) ) return;
$this->model( $model_name );
}
}
/* End of file MY_Loader.php */
/* Location: ./application/core/MY_Loader.php */
puyo228 9年前
那 module 中的 model 名 去掉中间 module 必须与 app下面的 model名一致，不然就挂了，感觉在命名上是否有些不灵活
回覆TA