Oldest Posts First in Selected Categories
Lists posts in the categories you choose from oldest to newest, so serialized stories, courses and step-by-step series read in the right order.
Opens WPIDE on
Code
// Category slugs whose archives list posts oldest first, for series, stories and step-by-step courses. Empty = off.
// Example: array( 'my-novel', 'beginner-course' )
$wpide_oldest_first_categories = array();
add_action( 'pre_get_posts', function ( $query ) use ( $wpide_oldest_first_categories ) {
if ( ! $wpide_oldest_first_categories || is_admin() || ! $query->is_main_query() || ! $query->is_category( $wpide_oldest_first_categories ) ) {
return;
}
$query->set( 'orderby', 'date' );
$query->set( 'order', 'ASC' );
$query->set( 'ignore_sticky_posts', true );
} );Notes
The category list is empty by default; add the slugs of your series categories.
How to add this snippet
- Install WPIDE on your WordPress site (it is free) and open Code Snippets.
- Use snippet above adds it from the library in one click. Or copy the code into a new snippet with the same code type.
- It is added inactive: review the code and settings, then switch it on.