How to extends a TimberPost - wordpress

Question

Probably it is something obvious and has escaped under my nose.
I did not understand how to hook my extended class to timber.
Let's take the example of the issues. How can I get an object like MySitePost when I call Timber::query_post()?
So now I’ve got an easy way to refer to the {{ post.issue }} in our twig templates.
Looks like an automatic process... but I'm not so sure about this!
For reference:
https://timber.github.io/docs/guides/extending-timber/

Answer 1

I think this is a good question that might not be so obvious.
To use your custom post, you’ll often find a parameter when fetching posts where you can pass the name of your custom class. The returned object will then be instances of your custom class.
$posts = Timber::get_posts( $your_args, 'MySitePost' );
$posts = new Timber\PostQuery( $your_args, 'MySitePost' );
When you want to fetch a single post, it works quite similar. You can either directly instantiate your post or pass your post class to the function.
$post = new MySitePost();
$post = Timber::get_post( $post_id, 'MySitePost' );
If you want to set a default class to be used for your posts, you can use the Timber\PostClassMap filter:
// Use one class for all Timber posts.
add_filter( 'Timber\PostClassMap', function( $post_class, $post_type ) {
return 'MySitePost';
}, 10, 2 );
// Use default class for all post types, except for pages.
add_filter( 'Timber\PostClassMap', function( $post_class, $post_type ) {
// Bailout if not a page
if ( 'page' !== $post_type ) {
return $post_class;
}
return 'MySitePost';
}, 10, 2 );
// Use a class map for different post types
add_filter( 'Timber\PostClassMap', function( $post_class, $post_type ) {
return array(
'post' => 'MySitePost',
'apartment' => 'MyApartmentPost',
'city' => 'MyCityPost',
);
}, 10, 2 );