Laravel Auth Custom Driver Error - authentication

Question

FYI : I'm very new to Laravel and doing my best to learn it properly.
Working on an auth driver that uses a soap service to authenticate.
Error I get when trying to test with Auth::attempt()
Symfony \ Component \ Debug \ Exception \ FatalErrorException (E_COMPILE_ERROR)
Declaration of Project\Providers\AuthUserProvider::retrieveByToken() must be compatible with Illuminate\Auth\UserProviderInterface::retrieveByToken($identifier, $token)
Here is the driver...
<?php namespace Project\Providers;
use Illuminate\Auth\UserProviderInterface;
use Illuminate\Auth\GenericUser;
use Illuminate\Auth\UserInterface;
class AuthUserProvider implements UserProviderInterface {
/**
* External webservice for authentication
*/
private $webservice;
/**
* The user object.
*/
private $user;
/**
* Constructor
*
* #return void
*/
public function __construct(\Project\Webservice\AuthCheckApi $webservice)
{
$this->webservice = $webservice;
$this->user = null;
}
/**
* Retrieves a user by id
*
* #param int $identifier
* #return mixed null|array
*/
public function retrieveByID($identifier)
{
$this->user = is_null($this->user) ? $this->webservice->find($identifier) : $this->user;
return $this->user;
}
/**
* Tries to find a user based on the credentials passed.
*
* #param array $crendtials username|password
* #return mixed bool|UserInterface
*/
public function retrieveByCredentials(array $credentials)
{
if(!$user = $this->webservice->byusername($credentials['username'],$credentials['password'])) return false;
return new GenericUser($user);
}
/**
* Validates the credentials passed to the ones in webservice.
*
* #param UserInterface $user
* #param array $credentials
* #return bool
*/
public function validateCredentials(\Illuminate\Auth\UserInterface $user, array $credentials)
{
$validated = $this->webservice->validateCredentials($user,$credentials['username']);
return true;
}
/**
* Needed by Laravel 4.1.26 and above
*/
public function retrieveByToken()
{
return true;
}
/**
* Needed by Laravel 4.1.26 and above
*/
public function updateRememberToken()
{
return false;
}
}
Thanks for any help.

Answer 1

You are implementing the UserProviderInterface so you need to add the complete definition of all functions of the interface, here you are forgetting the arguments for the last two function
public function retrieveByToken($identifier, $token)
{
}
public function updateRememberToken($user, $token)
{
}