How is the logic of complementary products implemented in an online store?

Question

PHP

Hello.
Share your experience, yours or someone else's.
How is one of the sales methods realized at the technical level - the offer of complementary goods?
I understand that the basic option is an elementary hardcode of connections. But if there are a lot of goods, then this becomes a problem. I understand that no one can do better than a person. However, what ways to automate a large number of products exist? best practices?
Maybe there are good articles on this topic?
Update: what statistical information needs to be collected to implement the functionality.
Just in case - Elasticsearch is used.

Answer 1

Complementary is a vague definition.
There are: "accessories to", "related", "similar", "also viewed with this product", "also bought with this product", "you have already viewed", "most viewed in category", "new in category", " most purchased category".
What are you interested in?)

Answer 2

Look at how competitors have done it, usually these are statistics, but not only for your site .. but also for others. Then logic is built on the basis of data.

Answer 3

There is a table of parameters. There is a table of goods. There is a table of goods parameters. The current product has options.
The related concept, as it were, says "the same or plus minus one", and now this phrase is sewn into your page on the program code - which means plus minus 1.
As a result, a query is formed that returns element IDs.
Then the elements themselves are requested by id-shkami.
FSO.
Call me on skype or email me, I will explain clearly.

Answer 4

If you don’t really want to indulge, then you can use a ready-made solution , for example, the same .