Laravel 4 session won't persist across page loads - php

Question

I wanted to integrate the oauth2 server into my laravel 4.1 project. The password flow went pretty well but when writing the authorization code flow I encountered some strange problems with the sessions.
The request to generate leads to this function where filtered for logged in users
Route::get('security/authorize', array('before' => 'check-authorization-params|auth', function()
{
[...]
}));
Guests are redirected to a form to log in
Route::get('security/login', array('before' => 'guest' ,function()
{
return View::make('users.login');
}));
Wich leads to this route where the user should be logged in and redirected to the request he intended to do:
public function login()
{
$creds = array(
'email' => Input::get('email'),
'password'=>Input::get('password')
);
if(Auth::attempt($creds, true))
{
return Redirect::intended('/');
}
return Redirect::to('security/login');
}
The problem is, despite a positive Auth::attempt() I keep being redirected by the auth filter.
I made a few brief tests to check whats wrong by setting and reading session data wich never reached the next request, so i figured out i must have to do with my sessions.
Here's my session config file
<?php
return array(
'driver' => 'database',
'lifetime' => 120,
'expire_on_close' => false,
'files' => storage_path().'/sessions',
'connection' => 'mysql',
'table' => 'sessions',
'lottery' => array(2, 100),
'cookie' => 'laravel_session',
'path' => '/',
'domain' => null,
);
and here are some things I double checked:
database connection is correct and sessions show up in my table
session table fields have the right data types (id - varchar(255), payload - text, last_activity - int(11))
cookies get set

Answer 1

It turned out, that I did not set up the auth identifier in my user model correctly.
Changing it from this
public function getAuthIdentifier()
{
return $this->email;
}
to this
public function getAuthIdentifier()
{
return $this->id;
}
fixed everything.