Get current term's ID
-
16-10-2019 - |
Question
Im using the following code to get an array of children taxonomies and write them out with links in an unordered list.
<?php
$termID = 10;
$taxonomyName = "products";
$termchildren = get_term_children( $termID, $taxonomyName );
echo '<ul>';
foreach ($termchildren as $child) {
$term = get_term_by( 'id', $child, $taxonomyName );
echo '<li><a href="' . get_term_link( $term->name, $taxonomyName ) . '">' . $term->name . '</a></li>';
}
echo '</ul>';
?>
What I'm trying to achieve is to get the actual term (category) id so I can replace it on $termID and don't have to hardcode the id of the term.
Any help would be kindly appreciated!
Thanks!
Solution
Here is a function I use to list subterms:
/**
* Lists all subentries of a taxonomy.
*
* @return void
*/
function ttt_get_subterms( $args = array () )
{
if ( ! isset ( get_queried_object()->taxonomy ) )
{
return;
}
$options = array (
'child_of' => get_queried_object_id()
, 'echo' => 0
, 'taxonomy' => get_queried_object()->taxonomy
, 'title_li' => FALSE
, 'use_desc_for_title' => FALSE
);
$settings = array_merge( $options, $args );
$subtermlist = wp_list_categories( $settings );
// Without results WP creates a dummy item. It doesn't contain links.
! empty ( $subtermlist ) and FALSE !== strpos( $subtermlist, '<a ' )
and print "<ul class=subterms>$subtermlist</ul>";
}
Use it like wp_list_categories()
.
Avoid get_term_by()
. It is very expensive and not necessary.
OTHER TIPS
To get the Current term you can use get_query_var( 'term' );
and to get the current taxonomy you can use get_query_var( 'taxonomy' )
so you can do something like this:
$term_slug = get_query_var( 'term' );
$taxonomyName = get_query_var( 'taxonomy' );
$current_term = get_term_by( 'slug', $term_slug, $taxonomyName );
$termchildren = get_term_children( $current_term->term_id, $taxonomyName );
echo '<ul>';
foreach ($termchildren as $child) {
$term = get_term_by( 'id', $child, $taxonomyName );
echo '<li><a href="' . get_term_link( $term->name, $taxonomyName ) . '">' . $term->name . '</a></li>';
}
echo '</ul>';
Or you can use : term_exists( $term, $taxonomy, $parent )
$term_id = term_exists( $term_name );
See WordPress Codex
Check if a given term exists and return the term ID
Returns the term ID if no taxonomy was specified and the term exists.
To get the current term ID, use:
$term_id = get_queried_object()->term_id;
get_query_var
cannot be used in thise case, since term_id
is not in the list of vars available publicly.