One of each product per order
Every product can only be bought once per order (the quantity box disappears). For courses, tickets and one-off items.
Before you switch it on: Nothing to fill in: it stays off after installing because it changes every product. Switch it on when you mean it.
It arrives switched off, even when you install its whole pack with "Switch on after installing".
<?php
add_filter( 'woocommerce_is_sold_individually', '__return_true' );
Good to know
To do it for some products only, tick “Sold individually” on their Inventory tab instead.
In these packs
- WooCommerce: cart and checkout: Free-shipping progress, coupon links, quantity limits and a cleaner checkout.