16.4 — Cheatsheet Doctrine & Twig

#[ORM\Entity(repositoryClass: BookingRepository::class)]
#[ORM\Table(name: 'bookings')]
#[ORM\Index(columns: ['status'])]
class Booking
{
    #[ORM\Id, ORM\GeneratedValue, ORM\Column]
    private ?int $id = null;
 
    #[ORM\Column(length: 255)]
    private string $email;
 
    #[ORM\Column(type: 'decimal', precision: 10, scale: 2, nullable: true)]
    private ?string $amount = null;
 
    #[ORM\Column(enumType: BookingStatus::class)]
    private BookingStatus $status = BookingStatus::Pending;
}

// ManyToOne (côté propriétaire, porte la FK)
#[ORM\ManyToOne(inversedBy: 'bookings')]
#[ORM\JoinColumn(nullable: false)]
private ?User $user = null;
 
// OneToMany (côté inverse)
/** @var Collection<int, Booking> */
#[ORM\OneToMany(targetEntity: Booking::class, mappedBy: 'user', orphanRemoval: true)]
private Collection $bookings;   // new ArrayCollection() dans le constructeur
 
// ManyToMany
#[ORM\ManyToMany(targetEntity: Tag::class, inversedBy: 'services')]
private Collection $tags;
 
// OneToOne
#[ORM\OneToOne(inversedBy: 'payment')]
private ?Booking $booking = null;

$em->persist($entity); $em->flush();     // insert (un seul flush)
$entity->setX(...); $em->flush();        // update (Unit of Work détecte)
$em->remove($entity); $em->flush();      // delete
 
// Repository (méthodes de base)
$repo->find(42);
$repo->findBy(['status' => X], ['start' => 'ASC'], 20);
$repo->findOneBy(['email' => $e]);
$repo->count(['status' => X]);
 
// QueryBuilder (+ fetch join anti N+1)
$this->createQueryBuilder('b')
    ->addSelect('s')->join('b.slot', 's')     // charge la relation
    ->andWhere('b.status = :s')->setParameter('s', $status)   // JAMAIS de concat
    ->orderBy('b.start', 'DESC')
    ->setFirstResult(($page-1)*$per)->setMaxResults($per)
    ->getQuery()->getResult();
 
// Résultats
->getResult();              // Entity[]
->getOneOrNullResult();     // Entity|null
->getSingleScalarResult();  // COUNT / scalaire
->toIterable();             // générateur (gros volumes)

{# affichage / logique / commentaire #}
{{ variable }}   {% if x %}...{% endif %}   {# note #}
 
{# accès #}
{{ booking.customerEmail }}   {# clé, propriété OU getter #}
{{ booking.status.label }}    {# méthode d'enum #}
 
{# filtres #}
{{ name|upper }}   {{ date|date('d/m/Y H:i') }}   {{ x|default('—') }}
{{ items|length }}   {{ price|number_format(2, ',', ' ') }}
 
{# fonctions #}
{{ path('route', { id: x }) }}   {{ asset('img.png') }}   {{ is_granted('EDIT', obj) }}
 
{# conditions / boucles #}
{% for slot in service.slots %}
    {{ loop.index }} — {{ slot.start|date('H:i') }}
{% else %}
    Aucun créneau.
{% endfor %}
 
{# héritage #}
{% extends 'base.html.twig' %}
{% block body %}...{{ parent() }}...{% endblock %}
 
{# include / composant #}
{% include 'partials/_row.html.twig' with { booking: b } only %}
<twig:StatusBadge :status="booking.status" />
 
{# global app #}
{{ app.user.email }}   {{ app.request.locale }}   {{ app.flashes }}

{{ form_start(form) }}
    {{ form_row(form.email) }}
    {{ form_widget(form.seats) }}
    {{ form_errors(form.seats) }}
    {{ form_rest(form) }}   {# n'oubliez pas : rend le token CSRF #}
{{ form_end(form) }}