ACF Pro: Relationship Field does not accept/ save CPT

• nicmare

• November 4, 2021 at 4:15 am

Hi there,
i think i am a very experienced WP-Dev and i used to work with ACF since many years. WP and ACF are up to date.
I have a Relationship-Field which does not accept or save my CPT selection. I created a loom for that:

https://www.loom.com/share/8b1a8cdc0282401e8a45d2043867c196

This is my CPT:

register_post_type( 'event', array(
		'labels' => array(
			'name' => 'Events',
			'singular_name' => 'Event'
		),
		'public' => true,
		'publicly_queryable' => true,
		'has_archive' => false,
		'show_in_nav_menus' => true,
		'show_ui' => true,
		'show_in_rest' => true, // enables gutenberg
		'rewrite' => array( 'slug' => _x( 'event', 'URL slug', 'hns' ) ),
		'menu_icon' => 'dashicons-calendar-alt',
		'supports' => array( 'title','editor','excerpt', 'thumbnail','revisions','custom-fields' ),
) );

This is my ACF Field:

This is my custom block created with ACF:

acf_register_block_type(array(
			'name'              => 'hns_teaser',
			'title'             => __('Teaser','hns'),
			'description'       => __('Vorschau-Kachel für Beiträge erzeugen','hns'),
			'render_template'   => 'template-parts/blocks/teaser/index.php',
			'category'          => 'widgets',
			'icon'              => 'images-alt2',
			'keywords'          => array( 'teaser','post' ,'Beiträge','Vorschau'),
			'mode'              => 'preview',
			'supports'          => array(
				'align'     => false,
				'align_text' => true,
				'multiple' => true,
				//'align_content' => true, // oben, mittig, unten
			),
));

is there any explanation for the weird behavior? i mean i used it several times last month with many CPTs. Now i created a new one and it does work any longer.

• nicmare

• November 4, 2021 at 4:20 am

• WP_DEBUG is enabled and debug.log file empty
• tested with 5.9.0, 5.10.1 and 5.11-RC1

• nicmare

• November 4, 2021 at 5:13 am

one thing i tested: as it used to work with older/other CPTs, i duplicated one post of other CPT and then changed the posttype in the database to “event” and voila, it gets accepted and saved by the relationship field: https://www.loom.com/share/ae811648893d4251bb2e8ef5c9851ad7
but i don’t see/understand the difference of the posts

• nicmare

• November 4, 2021 at 5:17 am

WOW finally i found the issue. It occurs when you use Polylang and you did not put the CPT in CPT-settings of the plugin:

i simply forget it and this was driving me crazy for hours. JC! hopefully one day i can help someone with that monologue or ACF team will implement a fix

• nicmare

• November 4, 2021 at 7:27 am

if you want to NOT have the cpt translatable by polylang you need to skip it in parse_query hook like this:

function skip_cpts( $query ) {
	if ( get_post_type() == "event" )  $query->set( 'lang', '' );
	
}
add_action( 'parse_query', "skip_cpts", 0 );

thanks to polylang support if found this solution helpful