Topic: ACF Relationship Field and GenerateBlocks

Nick
July 9, 2024 at 2:37 am
Is there any support for ACF Relationship fields in GB? Specifically:

1. I have a relationship field on Posts which creates a relationship with posts in a ‘members’ CPT. I want to set up a reverse query using the Query Loop Block (used on the ‘single’ Members CPT template) to retrieve blog Posts for which the current Members CPT post is set as a relationship. Along the lines of:
```
$current_member_organisation_id = get_the_ID();
$args = array(
	'post_type' => 'post',
	'meta_query' => array(
		array(
			'key' => 'member', // The ACF relationship field key
			'value' => '"' . $current_member_organisation_id . '"',
			'compare' => 'LIKE'
		)
	)
);
```
2. Elsewhere, I’d like to pull in the currently post’s relationship fields via Dynamic Data on the Headline block.
David
July 9, 2024 at 6:21 am

Hi there,

theres no direct integration as yet.
But you can write custom queries for a the Query Loop block.
See here for a similar example:

https://generate.support/topic/how-to-create-a-query-loop-for-custom-pages/#post-108624

Nick

July 9, 2024 at 7:27 am

David, you are, as ever, a flipping legend!

For anyone else finding this post, this is my filter for this use case:

//Custom query for GB Loop Block: 
add_filter( 'generateblocks_query_loop_args', function ($query_args, $attributes) {
	if (
		! empty( $attributes['className'] ) &&
		strpos( $attributes['className'], 'member-related-posts' ) !== false &&
		! is_admin()
	) {
		// get the related post ID
		$current_member_organisation_id = get_the_ID();
		// Merge the current $query_args with the new args
		return array_merge( $query_args, array(

			'meta_query' => array(
				array(
					'key' => 'member', // The ACF relationship field key
					'value' => '"' . $current_member_organisation_id . '"', // The current member organisation ID wrapped in quotes
					'compare' => 'LIKE'
				)
			)
		) );
	}

	return $query_args;
}, 10, 2 );

David
July 10, 2024 at 4:29 am

Awesome – glad to be of help.
I just spotted question 2 – do you need assist with that ?
Nick
July 10, 2024 at 5:37 am

If you have a solution for 2, that would be awesome… I’ve tried referring to the meta key but that doesn’t seem to work.

David

July 10, 2024 at 6:25 am

Option A – Query loop
if all the related field data was grouped together then you could use a Query Loop block to return all the necessary fields in one go using the same method as above

Option B – Shortcode.
You could build a custom shortcode that allows you to specify the Relationship field and the Field value you want to return

eg.


function acf_relationship_shortcode($atts) {
    $atts = shortcode_atts(
        array(
            'field_name' => '',
            'related_field_name' => '',
            'post_id' => get_the_ID(),
        ),
        $atts,
        'acf_relationship'
    );

    $relationship_field = get_field($atts['field_name'], $atts['post_id']);

    if ($relationship_field) {
        $output = '';

        foreach ($relationship_field as $related_post_id) {
            
            $related_field_value = get_field($atts['related_field_name'], $related_post_id);

            $output .= $related_field_value . ' ';
        }

        return $output;
    }

    return '';
}
add_shortcode('acf_relationship', 'acf_relationship_shortcode');

Then you could use the shortcode inside a headline block eg.


[acf_relationship field_name="your_relationship_field_name" related_field_name="your_related_field_name"]

Can’t say I am 100% confident on that as I don’t do much with ACF relationships but it kinda makes sense 🙂

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ACF Relationship Field and GenerateBlocks