Relationship Using WP_Query arguments

• cultivate

• April 1, 2015 at 1:24 am

I have followed the example set out on the Relationship document page to load only selected post ID’s.

// get only first 3 results
$ids = get_field('conference_talks', false, false);

$query = new WP_Query(array(
	'post_type'      	=> 'conferences',
	'posts_per_page'	=> 3,
	'post__in'		=> $ids,
	'post_status'		=> 'any',
	'orderby'        	=> 'rand',
));

This works correctly if posts are selected in the relationship field. However if no posts are selected the query outputs 3 posts. Surely if nothing is selected nothing should be output?

Any help/pointers appreciated.

• James

• May 23, 2016 at 1:04 am

Hi @cultivate,

Thanks for the post.

In this use case, I would recommend you make use of a conditional block to check if there is any value from the get_field() and then run the query.

The code would look like so:

// get only first 3 results
if(get_field('conference_talks'){
$ids = get_field('conference_talks', false, false);

$query = new WP_Query(array(
	'post_type'      	=> 'conferences',
	'posts_per_page'	=> 3,
	'post__in'		=> $ids,
	'post_status'		=> 'any',
	'orderby'        	=> 'rand',
));}