"Only discounted products" criteria must be updated to use `offer.is_discount`

[ddattee]

How to reproduce
I'm trying to retreive the products from a virtual category via API.
The virtual category has been created on the "Only discounted products" criteria.

Problem
Following the recomandation found on this subject Smile-SA/elasticsuite#217.
I tried retrieving the products via the REST search API using the price.is_discount field but it doesn't work.

Reason
After diging I found that the index is made on an offer.is_discount field which is inconsistent with the field used in the Magento.

Solution
So the module needs to eather set the offer.is_discount as the field for "Only discounted products" or index on the price.is_discount field instead of the offer.is_discount.

[delyriand]

Hi @ddattee,

Thank you for report this issue.
You are right, actually it is impossible to retrieve the product list with the criteria is_discount. We need to find a way to select the seller to apply the filter.

For the virtual category on front, we will make a quick fix to use the "Only discounted products" criteria.

Best regards