Cheat Sheet for Symfony 2.6

symfony_cheatsheet_2.6

Create a new project:
symfony new {{project_name}}
php app/console generate:bundle --namespace=Acme/DemoBundle --format=yml

Help:
php app/console config:dump-reference FrameworkBundle

Doctrine:
php app/console doctrine:database:create
php app/console doctrine:generate:entities TwoSixRandomBundle:Product
php app/console doctrine:schema:update --force

Important commands:
php app/console cache:clear --env=prod

Start symfony server:
php app/console server:run

Twig - Embed a controller:
{{ render(controller('AppBundle:Default:topArticles')) }}

Link to assets:
<link href="{{ asset('css/blog.css') }}" rel="stylesheet" type="text/css" />

Using route annotation:
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
/**
 * @Route("/hello/{name}", name="hello")
 */
 
Errors:
404 - throw $this->createNotFoundException();
500 - throw new \Exception('Something went horribly wrong!');

Request Parameters:
$pageName = $request->query->get('page'); // GET
$pageName = $request->request->get('page'); // POST
{{ app.request.query.get('page') }}
$request->server->get('HTTP_HOST');
$request->files->get('foo');
$request->cookies->get('PHPSESSID');
$request->headers->get('content_type');

Session:
$session = $request->getSession();
$session->set('foo', 'bar');
$foo = $session->get('foo', 'bar'); // 2nd arg is default value

Flash:
$this->addFlash('notice', 'Congratulations, your action succeeded!');
<div>
    {{ app.session.flashbag.get('notice') }}
</div>

{% extends "layout.html.twig" %}

{% block title %}List of Posts{% endblock %}
{% block body %}
    <h1>List of Posts</h1>
    <ul>
        {% for post in posts %}
        <li>
            <a href="{{ path('blog_show', {'id': post.id}) }}">
                {{ post.title }}
            </a>
        </li>
        {% endfor %}
    </ul>
{% endblock %}

Routing:
view_study_class:
    pattern:  /courses/{id}/flashcards/{page}
    defaults: { _controller: MoonLightMainBundle:StudyClass:viewStudyClass, page: 0 }

Parameters:

Doctrine insert:
$product = new Product();
$product->setName('A Foo Bar');
$em = $this->getDoctrine()->getManager();
$em->persist($product);
$em->flush();

Doctrine remove:
$em->remove($product);
$em->flush();

Doctrine get:
$em = $this->getDoctrine()->getManager();
$query = $em->createQuery(
    'SELECT p
    FROM AppBundle:Product p
    WHERE p.price > :price
    ORDER BY p.price ASC'
)->setParameter('price', '19.99');
$query->getOneOrNullResult();