Filter custom taxonomy selection in post-data field?

Hi @tnightingale

I hope you are doing well.

It will require some custom coding.

To show / hide specific categories:

add_filter( 'forminator_field_postdata_category_list', function( $categories ){
	$exclude_cat_ids = [
		123,
		456
	];

	if( $exclude_cat_ids ){
		foreach( $categories as $id => $cat ){
			if( in_array( $cat->term_id, $exclude_cat_ids ) ){
				unset( $categories[ $id ] );
			}
		}
	}
	return $categories;
} );

add_filter( 'forminator_field_postdata_category_list', function( $categories ){
	$only_cat_ids = [
		123,
		456
	];
		foreach( $categories as $id => $cat ){
			if( ! in_array( $cat->term_id, $only_cat_ids ) ){
				unset( $categories[ $id ] );
			}
		}
	return $categories;
} );

So you can use that code to filter the categories that you would like to show or not.

Let us know if you have any additional questions.
Best Regards
Patrick Freitas

Hi @tnightingal,

I want this to only apply to certain forms – best way to do that?

Seems like your query is similar to what you have asked it your other ticket. I have already replied in your ticket:
https://ww.wp.xz.cn/support/topic/autocomplete-option-for-taxonomy-selection-in-post_data/#post-15887917

Please check and see whether it fits your requirement.

Kind Regards,
Nithin