Make select list pull from CPT?

• thatryan

• February 24, 2015 at 3:12 am

I am using a relationship field, inside a repeater, to pull from a custom post type right now and it works great. Issue is that for my situation I need to limit the selections for each row to just 1. So two questions;

1. Is there a way to limit choices to 1 in relationship fields?
2. If not, could there be a way to have a select list with values populated from custom post type titles?

• James

• April 4, 2016 at 11:52 pm

Hi @thatryan,

Thanks for the question.

Yes this is possible, you will only need to make use of the acf/fields/relationship/query filter and modify the $args array that is used to query the posts in the field.

The code will look like so:

<?php

function my_relationship_query( $args, $field, $post_id ) {
	
    // limit number of posts
   
    $args['posts_per_page'] = 1;
	
	
	// return
    return $args;
    
}

// filter for every field
add_filter('acf/fields/relationship/query', 'my_relationship_query', 10, 3);

?>