(Yaf >=1.0.0)
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 useful warning will be triggered
(very useful to find out why a class could not be loaded).
Зауваження:
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):
Приклад #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"
Приклад #2 Register localnamespace
<?php
class Bootstrap extends Yaf_Bootstrap_Abstract{
public function _initLoader($dispatcher) {
Yaf_Loader::getInstance()->registerLocalNameSpace(array("Foo", "Bar"));
}
?>Приклад #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
Приклад #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 with 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:
Приклад #5 MVC class loading example
Controller Classes => // APPLICATION_PATH/controllers/ Model Classes => // APPLICATION_PATH/models/ Plugin Classes => // APPLICATION_PATH/plugins/
Приклад #6 MVC class distinctions
Controller Classes =>
// ***Controller
Model Classes =>
// ***Model
Plugin Classes =>
// ***Plugin
Приклад #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
also, the directory will be affected by yaf.lowcase_path.Зауваження:
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/".
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()