## Change AppView
```PHP
// src/View/AppView.php
namespace App\View;
use WyriHaximus\TwigView\View\TwigView;
class AppView extends TwigView
{
// Code ...
}
```
## Load Helpers
```PHP
// src/View/AppView.php
namespace App\View;
use WyriHaximus\TwigView\View\TwigView;
class AppView extends TwigView
{
public function initialize()
{
$this->loadHelper('Html');
$this->loadHelper('Form');
}
```
Note: TwigView will look for its templates with the extension `.twig` and then for `.tpl` (deprecated).
## Create the default layout to be used by TwigView named `default.twig` instead of `default.ctp`
Layout example
```Twig
{{ Html.charset()|raw }}
{{ __('MySite') }}
{{ _view.fetch('title')|raw }}
{{ Html.meta('icon')|raw }}
{{ Html.css('app.css')|raw }}
{{ Html.script('app')|raw }}
{{ _view.fetch('meta')|raw }}
{{ _view.fetch('css')|raw }}
{{ _view.fetch('script')|raw }}
{{ _view.fetch('header')|raw }}
{{ _view.fetch('title') }}
{{ _view.fetch('content')|raw }}
```
## Create a view template
in Template/Controller/action.twig
```Twig
{{ _view.start('header') }}
It's my header
{{ _view.end() }}
{{ _view.assign('title', "it's my title") }}
It's my content
```