Post order by title, except category # and #

Hi,

I would like to suggest you use ‘category__not_in’ in your query so as to exclude categories 7 & 9.

I have tried to update your code, but not tested the code by myself please check the code below:

function custom_order_category( $query ) {
	// exit out if it's the admin or it isn't the main query
	if ( is_admin() || ! $query->is_main_query() ) {
		return;
	}
	// order category archives by title in ascending order
	if ( is_category() ) {
		$query->set( 'order' , 'asc' );
		$query->set( 'orderby', 'title');
                $query->set( 'category__not_in', array( 7, 9));

		return;
	}
}
add_action( 'pre_get_posts', 'custom_order_category', 1 );

Hope this works for you.

Thanks.

Thanks, but that removes all the posts in those categories.

Done it!!!! Added the is_category bit and that worked! Thanks.

function custom_order_category( $query ) {
	// exit out if it's the admin or it isn't the main query
	if ( is_admin() || ! $query->is_main_query() ) {
		return;
	}
	// order category archives by title in ascending order
	if ( is_category() && ! is_category( 7,9 ) ) {
		$query->set( 'order' , 'asc' );
		$query->set( 'orderby', 'title');
		return;
	}
}
add_action( 'pre_get_posts', 'custom_order_category', 1 );