Here is the useful code snippet that I use to fix the issue where using a custom query on a WordPress category or archive or even index page breaks the pagination.
Simply copy and paste this code into your theme’s functions file:
function my_post_queries( $query ) {
// do not alter the query on wp-admin pages and only alter it if it's the main query
if (!is_admin() && $query->is_main_query()){
// alter the query for the home page
if(is_home()){
$query->set('posts_per_page', 3);
$query->set('cat', '9');
}
}
add_action( 'pre_get_posts', 'my_post_queries' );
And then edit as necessary!
To target a specific category, you would use this code:
// alter the query for the Apples category page
if(is_category('Apples')){
$query->set('posts_per_page', 6);
}
I have found this to be one of the easiest ways to fix the pagination issues I have run into when using custom WordPress queries. Let me know if you have a different or better way of doing so 🙂
