How to Auto-Display Latest Post Titles in Category Meta Description?

Hello @yi100,

Thank you for contacting Rank Math support.

You can use the following filter to use the latest post titles as the category description:

add_filter('rank_math/frontend/description', function ($description) {
if (is_category()) {
$cat = get_queried_object_id();
$myposts = get_posts(array('numberposts' => 3, 'offset' => 0, 'category__in' => array($cat), 'post_status'=>'publish', 'order'=>'DESC' ));
$titles = [];
foreach ($myposts as $post) {
$titles[] = get_the_title($post->ID);
}
return $titles[0]. ', ' .$titles[1]. ', '.$titles[2];
}
return $description;
});

Here is how to add a filter to your site: https://rankmath.com/kb/wordpress-hooks-actions-filters/

Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.

Thank you very much. However, I would like to add a new variable while retaining the old one, so that both can be used together. I asked ChatGPT to write a piece of code for this, but I’m not sure if it’s correct.

add_action('rank_math/vars/register_extra_replacements', function () {

??? rank_math_register_var_replacement(

??????? 'category_titles',

??????? [

??????????? 'name'??????? => esc_html__('Category Titles', 'rank-math'),

??????????? 'description' => esc_html__('Displays the titles of the latest posts in the current category', 'rank-math'),

??????????? 'variable'??? => 'category_titles',

??????????? 'example'???? => 'Post Title 1, Post Title 2, Post Title 3, ...',

??????? ],

??????? 'get_category_titles'

??? );

});

function get_category_titles() {

??? if (is_category()) {

??????? $cat = get_queried_object_id();

??????? $myposts = get_posts(array(

??? ????????'numberposts' => 10,

??????????? 'offset' => 0,

??????????? 'category__in' => array($cat),

??????????? 'post_status' => 'publish',

???? ???????'order' => 'DESC'

??????? ));

??????? $titles = [];

??????? foreach ($myposts as $post) {

??????????? $titles[] = get_the_title($post->ID);

??????? }

??????? return implode(', ', $titles);

??? }

??? return '';

}

Hello @yi100,

Here is a filter to create a variable to output the title of the three latest posts of a category:

add_action('rank_math/vars/register_extra_replacements', function () {
rank_math_register_var_replacement(
'post_titles',
[
'name' => esc_html__('Post Titles', 'rank-math'),
'description' => esc_html__('Title of posts', 'rank-math'),
'variable' => 'post_titles',
'example' => post_titles_callback(),
],
'post_titles_callback'
);
});
function post_titles_callback() {
if (is_category()) {
$cat = get_queried_object_id();
$myposts = get_posts(array('numberposts' => 3, 'offset' => 0, 'category__in' => array($cat), 'post_status'=>'publish', 'order'=>'DESC' ));
$titles = [];
foreach ($myposts as $post) {
$titles[] = get_the_title($post->ID);
}
return implode(', ', $titles);
}
}

You can use the %post_titles% variable after adding the filter.

Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.