Why do I get error : Undefined variable?

Question

I created an input script. I write name and script post name into database. But I have error - ErrorException [ Notice ]: Undefined variable: result .

There

Answer 1

Possibly because an empty value was passed to name and the variable doesn't get initialized unless its non-empty. But it gets used in the following line, outside the if

$this->template->content = View::factory('about/about')->set('result', $result);

Initialize $result outside the if():

$result = "";
if(!empty($_POST['name'])){
    $name = Model::factory('index')->insert_names($_POST['name']);;
    $result= $name;
}

Or move the entire block that follows the if(){} inside it.

public function action_index()
{
    if(!empty($_POST['name'])){
      $name = Model::factory('index')->insert_names($_POST['name']);;
      $result= $name;

      // move this inside the if()
      $this->template->site_name = Kohana::$config->load('common')->get('site_name');
      $this->template->site_description = Kohana::$config->load('common')->get('site_description');
      $this->template->page_title = 'About';
      $this->template->content = View::factory('about/about')->set('result', $result);
      $this->template->styles[] = 'index/index';
   }
}