Q:

How do I get the entity that represents the current user in Symfony2?

I am using the Symfony security setup. Everything works fine, but I don't know how to do one important thing:
In twig, I can reach the current user's info by doing:
Welcome, {{ app.user.username }}

or similar
How do I access this same information in the Controller? Specifically, I want to get the current user entity so I can store it relationally in another entity (one-to-one mapping).
I was really hoping it'd be
$this->get('security.context')->getToken()->getUser()

but that doesn't work. It gives me a class of type
Symfony\Component\Security\Core\User\User

and I want one of type
Acme\AuctionBundle\Entity\User

which is my entity....

A:

Symfony 4+, 2019+ Approach
In symfony 4 (probably 3.3 also, but only real-tested in 4) you can inject the Security service via auto-wiring in the controller like this:
<?php

use Symfony\Component\Security\Core\Security;

class SomeClass
{
    /**
     * @var Security
     */
    private $security;

    public function __construct(Security $security)
    {
       $this->security = $security;
    }

    public function privatePage() : Response
    {
        $user = $this->security->getUser(); // null or UserInterface, if logged in
        // ... do whatever you want with $user
    }
}

Symfony 2- Approach
As @ktolis says, you first have to configure your /app/config/security.yml.
Then with
$user = $this->get('security.token_storage')->getToken()->getUser();
$user->getUsername();

should be enougth!
$user is your User Object! You don't need to query it again.
Find out the way to set up your providers in security.yml from Sf2 Documentation and try again.
Best luck!

A:

Best practice
According to the documentation since Symfony 2.1 simply use this shortcut :
$user = $this->getUser();

The above is still working on Symfony 3.2 and is a shortcut for this :
$user = $this->get('security.token_storage')->getToken()->getUser();

The security.token_storage service was introduced in Symfony 2.6. Prior to Symfony 2.6, you had to use the getToken() method of the security.context service.

Example : And if you want directly the username :
$username = $this->getUser()->getUsername();

If wrong user class type
The user will be an object and the class of that object will depend on your user provider.

A:

The thread is a bit old but i think this could probably save someone's time ...
I ran into the same problem as the original question, that the type is showed as
Symfony\Component\Security\Core\User\User
It eventually turned out that i was logged in using an in memory user
my security.yml looks something like this
security:
    providers:
        chain_provider:
            chain:
                providers: [in_memory, fos_userbundle]
        fos_userbundle:
            id: fos_user.user_manager
        in_memory:
            memory:
                users:
                    user:  { password: userpass, roles: [ 'ROLE_USER' ] }
                    admin: { password: adminpass, roles: [ 'ROLE_ADMIN', 'ROLE_SONATA_ADMIN' ] }

the in_memory user type is always Symfony\Component\Security\Core\User\User if you want to use your own entity, log in using that provider's user.
Thanks,
hj

