Laravel 4 clean code review of users controller and model, trying to maintain MVC structure

I'd like you to review my attempt at creating an authorization class and let me know if there is re-factoring to be done and/or how I can make the code cleaner and abide by the MVC structure.

UsersController.php

<?php

    class UsersController extends BaseController {

    protected $user;

    public function __construct(User $user)
    {
        $this->beforeFilter('csrf', array('on' => 'post'));
        $this->user = $user;
    }

    public function getRegister() 
    {
        return View::make('admin.register');
    }

    public function postRegister()
    {
        try 
        {
            $this->user->insertUserIntoDatabase(Input::all());
        } 
        catch (ValidationError $e) 
        {
            return Redirect::to('admin/register')
            ->with('message', 'Something went wrong')
            ->withInput()   
            ->withErrors($e->getErrors());
        }

        return Redirect::to('admin/login')
                ->with('message', 'Thank you for creating a new account');
    }

    public function getLogin()
    {
        return View::make('admin.login');
    }

    public function postLogin()
    {
        if (Auth::attempt(array('email' => Input::get('email'), 'password' => Input::get('password') ))){
            return Redirect::to('admin/dashboard')->with('message', 'Thanks for logging in');
        }

        return Redirect::to('admin/login')->with('message', 'Your email/password combo failed.');
    }

    public function getLogout()
    {
        Auth::logout();
        return Redirect::to('admin/login')->with('message', 'You have been logged out.');
    }

    public function getDashboard()
    {
        return View::make('admin/dashboard');
    }   
}

Users.php (Model)

<?php

use Illuminate\Auth\UserInterface;
use Illuminate\Auth\Reminders\RemindableInterface;

class User extends Eloquent implements UserInterface, RemindableInterface {

    /**
    * The database table used by the model.
    *
    * @var string
    */
    protected $table = 'users';

    /**
    * The attributes excluded from the model's JSON form.
    *
    * @var array
    */
    protected $hidden = array('password');

    protected $fillable = array('firstname', 'lastname', 'email');
    /**
    * Get the unique identifier for the user.
    *
    * @return mixed
    */
    public function getAuthIdentifier()
    {
        return $this->getKey();
    }

    /**
    * Get the password for the user.
    *
    * @return string
    */
    public function getAuthPassword()
    {
        return $this->password;
    }

    /**
    * Get the e-mail address where password reminders are sent.
    *
    * @return string
    */
    public function getReminderEmail()
    {
        return $this->email;
    }

    public function insertUserIntoDatabase($input)
    {
        $validation = new Services\Validators\Users;

        if ($validation->passes()) {

            $user = new User;
            $user->firstname = Input::get('firstname');
            $user->lastname = Input::get('lastname');
            $user->email = Input::get('email');
            $user->password = Hash::make(Input::get('password'));
            $user->save();
        }

        else {
            $this->errors = $validation->errors;
            throw new ValidationError($validation->errors);
        }
    }
}