02_Basic_Routing_Using_yml

Purpose of the Demo - Basic Routing Using Yml

We will created a little web using Basic Routing using the yml routing type.

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• We will create the project through the console command: composer create-project symfony/skeleton 02_Basic_Routing_Using_yml

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Summary Symfony component`s to use

• Server Component, composer require server --dev

Basic Routing

1. Created our project using the Console command's,

composer create-project symfony/skeleton 02_Basic_Routing_Using_yml

2. In the next step we will access the project folder using:

cd 02_Basic_Routing_Using_yml

3. To work easly, we need install the server component of Symfony for its, we will launch the console command:

composer require server -dev

4. Now, you can view the result of demo when write in the terminal the console command:

php bin/console server:run

5. After, we will created the homepage, this is a static page that no need information, then we will have not to send info for the routing. Now, we will can created the routing into /config/routes.yaml.

/config/routes.yaml

homepage:
    path: /
    controller: App\Controller\HomeController::index

This routing points to the index method located in the HomeController controller, src/controller/HomeController.php.

6. The method index (public function index(){}) will be this:

src/controller/HomeController.php

<?php
// src/Controller/DefaultController.php
/* We indicate the namespace of the Bundle ********************************************************************/
    namespace App\Controller;
/* BASIC CONTROLLER COMPONENTS ********************************************************************************/
    use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;     // Allow Router
    use Symfony\Component\HttpFoundation\Response;                  // Allows you to execute Response
/**************************************************************************************************************/
class HomeController {
    public function index() {
        return new Response('<h1>News Daily Mirror !</h1>');
    }
}

Note: It is very important, if we are using the object Response we must use the next line use Symfony\Component\HttpFoundation\Response; in the controller.

7. Now you can launch the server by typing the console command php bin / cosnole server: run and see the results of the page in http://127.0.0.1:8000.

8. Now, we will modified the method index into src/controller/HomeController.php, for can use variable in our routing.

src/controller/HomeController.php

class HomeController {
    public function index() {
        //...
++        $section_array = array('life','sport','ecconomy');
++        $view_page = '<h1>News Daily Mirror !</h1>';
++        foreach($section_array as $key=>$value){
++            $view_page = $view_page.'<a href="/news/'.$value.'">'.$value.'</a><br>';
++        }
--        return new Response('<h1>News Daily Mirror !</h1>');
++        return new Response($view_page);
    }
}

9. The routing system offers much more interesting possibilities than those of the previous section. Many routes contain one or more variables, also called placeholders. In this example we will created the next routing:

/config/routes.yaml

viewSection:
    path: /news/{section}
    controller: App\Controller\newsController::viewSection

10. We can now create the method inside the controller src/controller/newsController.php that requires a variable.

src/controller/newsController.php

<?php
// src/Controller/DefaultController.php
/* We indicate the namespace of the Bundle ********************************************************************/
    namespace App\Controller;
/* BASIC CONTROLLER COMPONENTS ********************************************************************************/
    use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;     // Allow Router
    use Symfony\Component\HttpFoundation\Response;                  // Allows you to execute Response
/**************************************************************************************************************/
class newsController {
    public function viewSection($section) {
        $view_page = '<h1>News about '.$section.'</h1><br>'.
        '<a href="/">return home</a>';
        return new Response($view_page);
    }
}

11. Now you can launch the server by typing the console command php bin / cosnole server: run and see the results of the page in http://127.0.0.1:8000.