Yaf_View_Simple::setScriptPath
Yaf_Loader::autoload
Yaf
PHP Manual

# The Yaf_Loader class

(Yaf >=1.0.0)

## Introduction

Yaf_Loader introduces a comprehensive autoloading solution for Yaf.

The first time an instance of Yaf_Application is retrieved, Yaf_Loader will instance a singleton, and registers itself with spl_autoload. You retrieve an instance using the Yaf_Loader::getInstance()

Yaf_Loader attempt to load a class only one shot, if failed, depend on yaf.use_spl_auload, if this config is On Yaf_Loader::autoload() will return `FALSE`, thus give the chance to other autoload function. if it is Off (by default), Yaf_Loader::autoload() will return `TRUE`, and more important is that a very usefull warning will be triggerd (very usefull to find out why a class could not be loaded).

> Note:

> Please keep yaf.use_spl_autoload Off unless there is some library have their own autoload mechanism and impossible to rewrite it.

By default, Yaf_Loader assume all library (class defined script) store in the global library directory, which is defined in the php.ini(yaf.library).

If you want Yaf_Loader search some classes(libraries) in the local class directory(which is defined in application.ini, and by default, it is application.directory . "/library"), you should register the class prefix using the Yaf_Loader::registerLocalNameSpace()

Let's see some examples(assuming APPLICATION_PATH is application.directory):

Example #1 Config example

    // Assuming the following configure in php.ini:
    yaf.library = "/global_dir"

    //Assuming the following configure in application.ini
    application.library = APPLICATION_PATH "/library"

Assuming the following local name space registerd:

Example #2 Register localnamespace

`<?php
class Bootstrap extends Yaf_Bootstrap_Abstract{
public function _initLoader($dispatcher) {
Yaf_Loader::getInstance()->registerLocalNameSpace(array("Foo", "Bar"));
}
?>`
Then the autoload examples:

Example #3 Load class example

    class Foo_Bar_Test =>
      // APPLICATION_PATH/library/Foo/Bar/Test.php

    class GLO_Name  =>
      // /global_dir/Glo/Name.php

    class BarNon_Test
      // /global_dir/Barnon/Test.php

As of PHP 5.3, you can use namespace:

Example #4 Load namespace class example

    class \Foo\Bar\Dummy =>
       // APPLICATION_PATH/library/Foo/Bar/Dummy.php

    class \FooBar\Bar\Dummy =>
       // /global_dir/FooBar/Bar/Dummy.php

You may noticed that all the folder wth the first letter capitalized, you can make them lowercase by set yaf.lowcase_path = On in php.ini

Yaf_Loader is also designed to load the MVC classes, and the rule is:

Example #5 MVC class loading example

    Controller Classes =>
    // APPLICATION_PATH/controllers/

    Model Classes =>
    // APPLICATION_PATH/models/

    Plugin Classes =>
    // APPLICATION_PATH/plugins/

Yaf identify a class's suffix(this is by default, you can also change to the prefix by change the configure yaf.name_suffix) to decide whether it is a MVC class:

Example #6 MVC class distinctions

    Controller Classes =>
        // ***Controller

    Model Classes =>
        // ***Model

    Plugin Classes =>
        // ***Plugin

some examples:

Example #7 MVC loading example

    class IndexController
        // APPLICATION_PATH/controllers/Index.php

    class DataModel =>
       // APPLICATION_PATH/models/Data.php

    class DummyPlugin =>
      // APPLICATION_PATH/plugins/Dummy.php

    class A_B_TestModel =>
      // APPLICATION_PATH/models/A/B/Test.php

> Note:

> As of 2.1.18, Yaf supports Controllers autoloading for user script side, (which means the autoloading triggered by user php script, eg: access a controller static property in Bootstrap or Plugins), but autoloader only try to locate controller class script under the default module folder, which is "APPLICATION_PATH/controllers/".

also, the directory will be affected by yaf.lowcase_path.

## Class synopsis

Yaf_Loader {
/* Properties */
protected $_local_ns ;
protected $_library ;
protected $_global_library ;
static $_instance ;
/* Methods */
public void autoload ( void )
public void clearLocalNamespace ( void )
private void __clone ( void )
private__construct ( void )
public static void getInstance ( void )
public Yaf_Loader getLibraryPath ([ bool `$is_global` = false ] )
public void getLocalNamespace ( void )
public static void import ( void )
public void isLocalName ( void )
public void registerLocalNamespace ( mixed `$prefix` )
public Yaf_Loader setLibraryPath ( string `$directory` [, bool `$is_global` = false ] )
private void __sleep ( void )
private void __wakeup ( void )
}

## Properties

_local_ns

_library

  By default, this value is application.directory . "/library", you can change this either in the application.ini(application.library) or call to Yaf_Loader::setLibraryPath()

_global_library

_instance

## Table of Contents

- Yaf_Loader::autoload — The autoload purpose
- Yaf_Loader::clearLocalNamespace — The clearLocalNamespace purpose
- Yaf_Loader::__clone — The __clone purpose
- Yaf_Loader::__construct — The __construct purpose
- Yaf_Loader::getInstance — The getInstance purpose
- Yaf_Loader::getLibraryPath — get the library path
- Yaf_Loader::getLocalNamespace — The getLocalNamespace purpose
- Yaf_Loader::import — The import purpose
- Yaf_Loader::isLocalName — The isLocalName purpose
- Yaf_Loader::registerLocalNamespace — register local class prefix
- Yaf_Loader::setLibraryPath — Change the library path
- Yaf_Loader::__sleep — The __sleep purpose
- Yaf_Loader::__wakeup — The __wakeup purpose

Yaf_View_Simple::setScriptPath
Yaf_Loader::autoload
Yaf
PHP Manual