The Yaf_Controller_Abstract class

(Yaf >=1.0.0)

Introduction

Yaf_Controller_Abstract is the heart of Yaf's system. MVC stands for Model-View-Controller and is a design pattern targeted at separating application logic from display logic.

Every custom controller shall inherit Yaf_Controller_Abstract.

You will find that you can not define __construct function for your custom controller, thus, Yaf_Controller_Abstract provides a magic method: Yaf_Controller_Abstract::init().

If you have defined a init() method in your custom controller, it will be called as long as the controller was instantiated.

Action may have arguments, when a request coming, if there are the same name variable in the request parameters(see Yaf_Request_Abstract::getParam()) after routed, Yaf will pass them to the action method (see Yaf_Action_Abstract::execute()).

Note:

These arguments are directly fetched without filtering, it should be carefully processed before use them.

Class synopsis

abstract class Yaf_Controller_Abstract {
/* Properties */
public $actions;
protected $_module;
protected $_name;
protected $_request;
protected $_response;
protected $_invoke_args;
protected $_view;
/* Methods */
final private __construct()
protected display(string $tpl, array $parameters = ?): bool
public forward(string $action, array $paramters = ?): bool
public getInvokeArg(string $name): void
public getInvokeArgs(): void
public getModuleName(): string
public getName(): string
public getRequest(): Yaf_Request_Abstract
public getResponse(): Yaf_Response_Abstract
public getView(): Yaf_View_Interface
public getViewpath(): string
public init(): void
public initView(array $options = ?): void
public redirect(string $url): bool
protected render(string $tpl, array $parameters = ?): string
public setViewpath(string $view_directory): void
}

Properties

actions

You can also define an action method in a separate PHP script by using this property and Yaf_Action_Abstract.

Example #1 define action in a separate file

<?php
class IndexController extends Yaf_Controller_Abstract {
    protected $actions = array(
        /** now dummyAction is defined in a separate file */
        "dummy" => "actions/Dummy_action.php",
    );

    /* action method may have arguments */
    public function indexAction($name, $id) {
       /* $name and $id are unsafe raw data */
       assert($name == $this->getRequest()->getParam("name"));
       assert($id   == $this->_request->getParam("id"));
    }
}
?>

Example #2 Dummy_action.php

<?php
class DummyAction extends Yaf_Action_Abstract {
    /* an action class shall define this method as the entry point */
    public function execute() {
    }
}
?>

_module

module name

_name

controller name

_request

current request object

_response

current response object

_invoke_args

_view

view engine object

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