Thanks.
I solved the problem.
I added this in function.php:
function comapa_posts_where( $where ) {
$where = str_replace("meta_key = 'users_$", "meta_key LIKE 'users_%", $where);
return $where;
}
add_filter('posts_where', 'comapa_posts_where');
And I modified query on author.php:
<?php
global $wpdb;
$author_name = get_the_author();
$authorid = get_the_author_meta('ID');
$cat = get_queried_object();
$args = array(
'post_type' => "any",
'post_status' => "publish",
'orderby' => "date",
'order' => 'DESC',
'posts_per_page' => 12,
'cat' => $cat->term_id,
'meta_query' => array(
array(
'key' => 'users_$_user_name',
'value' => $authorid,
'compare' => '='
)
)
);
$query = new WP_Query($args);
?>
