ACF Block in multisite switch_to_blog not working properly

[mccomaschris]

I have an ACF Block that admins can add to their page to get and display news from the News site on our network. I switch to the news get, get the 3 most recent posts, and return them to the twig file. In the twig file I'm just looping over them to display them.

The title displays, but the post.link or post.meta does not display.

If I don't switch_to_blog and just pull the 3 recent blog posts from the site I'm on it works perfectly fine.

block/news.php

function herdpress_moments_block( $block, $content = '', $is_preview = false ) {
	$context               = Timber::context(); // phpcs:ignore
	$context['block']      = $block;
	$context['fields']     = get_fields();
	$context['is_preview'] = $is_preview;

	switch_to_blog( get_id_from_blogname( 'news' ) );

	$context['posts'] = Timber::get_posts(
		array(
			'posts_per_page' => 3,
		)
	);

	restore_current_blog();

	Timber::render( 'blocks/news.twig', $context );
}

blocks/news.twig

{% for post in posts %}
	<a href="{{ post.link }}">{{ post.title }}</a>
	<div>{{ post.meta('media_contact') }}</div>
{% endfor %}

[Levdbas]

Can you try to put the Timber::get_posts() in a variable first and var_dump that in the php file and loop through the results, do you have the $post->link() method available.

[gchtr]

This is expected behavior. If you use switch_to_blog(), you need to prepare your data in a context variable.

The reason you need to prepare your data in advance is that certain methods in Timber will call WordPress functions that rely on the current blog. Timber doesn’t fill out all data in {{ post }} for performance reasons. For example, {{ post.link }} will call get_permalink() internally, and this will always try to get the data from the current blog.

The solution looks like this:

block/news.php

function herdpress_moments_block( $block, $content = '', $is_preview = false ) {
	$context               = Timber::context(); // phpcs:ignore
	$context['block']      = $block;
	$context['fields']     = get_fields();
	$context['is_preview'] = $is_preview;

	$context['posts'] = [];

	switch_to_blog( get_id_from_blogname( 'news' ) );

	$posts = Timber::get_posts( [
		'posts_per_page' => 3,
	] );

	// Let’s prepare all data we’re gonna need in the Twig view here.
	$context['posts'][] = [
		'link' => $post->link(),
		'title' => $post->title(),
		'media_contact' => $post->meta('media_contact'),
	];

	restore_current_blog();

	Timber::render( 'blocks/news.twig', $context );
}

blocks/news.twig

{% for post in posts %}
	<a href="{{ post.link }}">{{ post.title }}</a>
	<div>{{ post.media_contact }}</div>
{% endfor %}

As of Timber 2.0, you could also use Post serialization for this.

[mccomaschris]

Thank you!