Twig Templating

Adding support for the Twig templating engine is straightforward.

First, add the Nice Twig and Nice Templating extensions to your project. The Twig extension depends on Nice Templating, so both extensions must be installed and loaded. You can accomplish this by updating your composer.json or running composer require at the command line.

• Example composer.json:

  {
      "require": {
          "nice/framework": "~1.0",
          "nice/templating": "~1.0",
          "nice/twig": "2.0.x-dev"
      }
  }

  Then run composer update at the command line.

• Using the composer command line tool, after Nice itself is installed:

  composer require nice/templating:~1.0 nice/twig:2.0.x-dev

Warning: Version 2.0 of the extension is currently under development. Take care to note any BC breaks when updating.

With the extensions installed, modify your front controller:

<?php

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Nice\Application;
use Nice\Router\RouteCollector;
use Nice\Extension\TemplatingExtension;
use Nice\Extension\TwigExtension;

require __DIR__ . '/../vendor/autoload.php';

$app = new Application();

$app->appendExtension(new TemplatingExtension());
$app->appendExtension(new TwigExtension());

$app->set('routes', function (RouteCollector $r) {
    $r->map('/hello/{name}', null, function (Application $app, Request $request, $name) {
        // Use the Templating service to render templates
        $rendered = $app->get('templating')->render('index.html.twig', array(
            'name' => $name
        ));

        return new Response($rendered);
    });
});

// Run the application
$app->run();

Once the TemplatingExtension is registered with your Nice application, the following service will be available:

• templating is your entry point to any templating engine. Use this service to render templates.

  This service will automatically know to use Twig or another templating language depending on what file extension the template has. Twig expects templates to end in .twig.

The parameter twig.template_dir is also made available. Its value will be whatever was passed into the template_dir option in the constructor of your TwigExtension instance.

Generating URLs

The Nice Twig extension includes integration with Nice's router, exposing the following useful functions:

• path Generates a URL. It takes a name and optionally, an array of parameters.

  For example:

  <a href="{{ path('user_edit', { id: 1 }) }}">Edit User</a>

• url Generates an absolute URL. It takes a name and optionally, an array of parameters.

• asset Generates a URL to the given asset. It takes a relative path to the asset, from the webroot.

  For example:

  <link href="{{ asset('css/styles.css') }}" rel="stylesheet">