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webmaster
283983012f
The Hosting form on /odoo-black-friday/ posts product 4 ("basket") + clear=1
to the shop's custom /shop/post_basket route. Adding a third hidden field,
redirect=/coupon/HOST27?r=/shop/checkout, chains that route's redirect into
the core website_sale_loyalty GET /coupon/<code> handler, so a single click
lands the visitor on /shop/address with the -$100 first-year discount already
itemised (Total $295) - no typing, works with JavaScript off, and it survives
the cross-host POST because the target is baked into the form.
Mechanism designed, probed and proven signed-out end to end by odoo-dev
(wiki/concepts/odoo-shop-promo-autoapply.md). No module, no price change.
Rollback: delete the one <input type="hidden" name="redirect"> line.