How to display similar products by model in the product card?

Question

opencart

DD!
There are several products with the same article or model, as when entering the card of a certain product, the products with the corresponding article or model will be automatically displayed next to each other. Roughly speaking analogs.

Answer 1

take the output of the product to the category as a basis, write an additional request in the product model the same as in the category, but instead of the category id, make a selection by the article, and, accordingly, send this array to the product card template through the controller.