Let's say we want to display a discounted price for a product. This product is not in the user's cart. Spree::Promotions seem to run ont he user's cart so what is the mechanism we use in Solidus for generic product based discounting..

Depends on your specific use case. There's an extension called solidus_sale_prices that can be useful for this, as promotions aren't a good fit (due to one promotion per order)

@Jared Norman thanks.. seems like it hasn't been updated much, do you know if it works with 3.0?

Yeah, the work to make it work isn't complete.

Ok, as a workaround I guess what I can do is is just look to see if it has a ProductPromotionRule and if it does.. apply the flat rate associated with that promotion to the product when returning pricing.. any issues with that?

That's still going to run into the issue of one promo per order, right?

oh hmm

I think we have some code around to do it

@Edwin Cruz while yes I see that would get the list of product promotions. I may be wrong about this but it seems the problem is that that the promotion system only allows one applied promotion per order so if you set say.. a product promotion on 10 different products and a user adds all of them to their order, it will only apply the largest discount to your order? I think there would need to be some sort of separate bit of code that uses a PriceSelector for Variant so that the variant both shows the new price on the frontend but it's also applied as the price to line items.. ?

yeah, it gets tricky, we saw some of those corner cases as well, and we tried to solve with some UX, like: this product might be elegible for X promotion, I guess that's why it's not in production yet, so many things to iron

I don't know that I would call these corner cases as much as standard use cases but yes it's something that needs to be considered.