# Controller

Wolff\Core\Controller

The controllers are a great way to keep your code organized instead of defining everything in the system/web.php file.

The routing system is tied to the controllers.

Usage

Let's create a controller, it must be in the Controller namespace.

Any public method is supposed to be accesible through a route, and it must take two parameters which are the request and response objects (instance of Wolff\Core\Http\Request and Wolff\Core\Http\Response).

The index method will be called by default when no method name is given.

app/controllers/home.php:

namespace Controller;

class Home
{

    public function index($req, $res)
    {
        $res->write('hello world');
    }

    public function sayHi($req, $res)
    {
        $res->write('hi');
    }
}

Given that example:

• http://localhost/home should render hello world in your browser.

• http://localhost/home/sayHi should render hi.

Sub folders

You can store controllers in sub folders, if you put the above controller in an app/controllers/sub folder. It will be accessible through http://localhost/sub/home.

General methods

The Wolff\Core\Controller class offers some useful static methods you can use.

Get controller

get(string $path)

Returns a new instantiated controller.

Controller::get('home');

That will return the home controller.

Call controller method

method(string $path[, string $method[, array $args]])

Returns the value of a controller method. The first parameter must be the controller name, the second parameter must be the method name, the third and last parameter must be an array with the parameters that will be used for the method.

Controller::method('client', 'getClientById', [ $client_id ]);

That will call the getClientById method of the client controller using the third parameter as the parameters.

Exists

exists(string $path)

Returns true if the specified controller exists, false otherwise.

Controller::exists('home');

That will return true only if the app/controllers/home.php controller exists, false otherwise.

Has method

hasMethod(string $path, string $method)

Returns true if the specified method of the controller exists and is accessible, false otherwise.

The first parameter must be the controller name. The second parameter must be the method name.

Controller::hasMethod('places/info', 'getInfoById');

That will return true only if the places/info controller class has a getInfoById method.