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_wp_preview_terms_filter( array $terms, int $post_id, string $taxonomy )

This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

Filters terms lookup to set the post format.

Description

Parameters

$terms

(array) (Required)

$post_id

(int) (Required)

$taxonomy

(string) (Required)

Return

(array)

Source

File: wp-includes/revision.php

function _wp_preview_terms_filter( $terms, $post_id, $taxonomy ) {
	if ( ! $post = get_post() ) {
		return $terms;
	}

	if ( empty( $_REQUEST['post_format'] ) || $post->ID != $post_id || 'post_format' != $taxonomy || 'revision' == $post->post_type ) {
		return $terms;
	}

	if ( 'standard' == $_REQUEST['post_format'] ) {
		$terms = array();
	} elseif ( $term = get_term_by( 'slug', 'post-format-' . sanitize_key( $_REQUEST['post_format'] ), 'post_format' ) ) {
		$terms = array( $term ); // Can only have one post format
	}

	return $terms;
}

Changelog

Version Description
3.6.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/_wp_preview_terms_filter