Problemer med login via ajax kald

PHP kode 

 $this->form_validation->set_rules('username', 'Brugernavn', 'required');
         $this->form_validation->set_rules('password', 'Adgangskode', 'required');
         
         if($this->form_validation->run() === TRUE){
             $resp = array();
             
             if($this->flexi_auth->login($this->input->post('username'), $this->input->post('password'), FALSE)){
                 $login_status = 'success';
             }
             
             $resp['login_status'] = $login_status;
             
             if($login_status === 'success'){
                 $resp['redirect_url'] = redirect('test');
             }
             
             echo json_encode($resp);
         }
         
         $this->data['subview']     = 'login';
         $this->data['title']     = 'Login';
         $this->load->view('auth/view', $this->data);

JScript kode 

 $.ajax({
                         url: url,
                         method: 'POST',
                         dataType: 'json',
                         data: {
                             username: $("input#username").val(),
                             password: $("input#password").val(),
                         },
                         error: function()
                         {
                             alert("An error occoured!");
                         },
                         success: function(response)
                         {
                             // Login status [success|invalid]
                             var login_status = response.login_status;
                                                             
                             // Form is fully completed, we update the percentage
                             neonLogin.setPercentage(100);
                             
                             
                             // We will give some time for the animation to finish, then execute the following procedures    
                             setTimeout(function()
                             {
                                 // If login is invalid, we store the 
                                 if(login_status == 'invalid')
                                 {
                                     $(".login-page").removeClass('logging-in');
                                     neonLogin.resetProgressBar(true);
                                 }
                                 else
                                 if(login_status == 'success')
                                 {
                                     // Redirect to login page
                                     setTimeout(function()
                                     {
                                         var redirect_url = baseurl;
                                         
                                         if(response.redirect_url && response.redirect_url.length)
                                         {
                                             redirect_url = response.redirect_url;
                                         }
                                         
                                         window.location.href = redirect_url;
                                     }, 400);
                                 }
                                 
                             }, 1000);
                         }
                     });