Unable to load the requested file: validation.php - php

Question

I am new to developing, and I want to do a simple validation in Codeigniter. I don't know where I am going wrong.
This is my form to be validated
And my controller is this
public function __construct()
{
parent::__construct();
$this->load->model('M_menu');
$this->load->model('master/M_user_type');
$this->load->helper(array('form'));
$this->load->library('form_validation');
}
public function index()
{
$data['menus']=$this->M_menu->getSideBarMenu_m();$data['error_message'] = '';
$this->load->view('master/V_user_type',$data);
}
function saveUserType_c()
{
$data['error_message'] = '';
$this->form_validation->set_rules('userType', 'UserTypeName', 'required');
echo var_dump($this->form_validation->run());
if (!$this->form_validation->run() )
{$data['menus']=$this->M_menu->getSideBarMenu_m();
$data['error_message'] .= validation_errors();
$this->load->view('master/V_user_type',$data);
}
else
{
$insert=$this->M_user_type->saveUserType_m();
if($insert){
$response=array("insert"=>true);
}else{
$response=array("insert"=>false);
}
echo json_encode($response);
}
}
With this I get the network error, and data is being saved to db. But no action in form(form not loading). Please guide me, where I go wrong. Also, if I need to give any more details

Answer 1

Please check your usertype view page, you can also load usertype view page before validation, so that you will be confirmed that usertype view page exist, I hope you understand my point.

Answer 2

You have to load a model before you call its methods. Use this:
$this->load->model('M_user_type');
$insert=$this->M_user_type->saveUserType_m();