polylang-helpers.php

<?php
/**
 * Returns the localised slug for a taxonomy term
 */
function h1_term_slug( $slug, $taxonomy, $return_original_if_missing = true ) {

	$localized_term = h1_get_term_by( 'slug', $slug, $taxonomy, OBJECT, 'raw', $return_original_if_missing );

	if ( $localized_term && !is_wp_error( $localized_term ) ) {
		$slug = $localized_term->slug;
	} elseif ( $return_original_if_missing == false ) {
		$slug = false;
	}

	return $slug;
}

/**
 * Returns the localised slug for a page by slug
 */
function h1_page_slug( $path ) {
	$page = h1_get_page_by_path( $path );

	if ( !$page )
		return false;

	return $page->post_name;
}

/**
 * Returns the localised page by slug
 */
function h1_get_page_by_path( $path ) {
	// get page id
	$page = get_page_by_path( $path );

	if ( !$page )
		return false;

	$localized_id = h1_get_localized_post_id( $page->ID );

	return get_post( $localized_id );
}

function h1_get_localized_post_id( $post_id ) {

	if ( function_exists( 'pll_get_post' ) && 'fi' != h1_current_language() ) {
		$localized_post_id = pll_get_post( $post_id );
		if ( $localized_post_id ) return $localized_post_id;
	}

	return $post_id;
}

/**
 * Always have a current language
 */
function h1_current_language() {
	if ( function_exists( 'pll_current_language' ) ) {
		return pll_current_language();
	}

	/**
	 * Default if polylang is not active
	 */
	return 'fi';
}