How to display all products at once?

Question

WordPress

It is necessary to display all products on the category page, and not 16 as it is now.
Theme: Storefront.
This code doesn't help:

add_filter( 'loop_shop_per_page', create_function( '$cols', 'return 18;' ), 20 );

Thanks

PS

Displays 16 products because I changed 3 columns to 4.

Answer 1

To display all products on the category page, use

function change_product_query($query) {
  $query->set( 'posts_per_page', -1 );
}
add_action( 'pre_get_posts', 'change_product_query' );