Example login php

login.php

<?php

if( ! $this->a1->login(Arr::get($post,'username',""),Arr::get($post,'password',""),Arr::get($post, 'remember', FALSE)))
                {
                    if(Model_Users::unique_username($post['username']))
                    {
                        throw new Kohana_Exception('Inexisting email');
                    }
                       throw new Kohana_Exception('Wrong password');
                }
                
                $session = $this->a1->session()->as_array();
$session["user"] = $this->a1->get_user();
$this->session = $session;