How to make a dependent product filter in OpenCart 2?

Question

opencart

Hello. Is there a ready-made product search filter for OpenCart 2.3.*.* that would be able to search for products by several interdependent parameters?
The simplest example is the search for auto parts. Those. select "Brand" in the drop-down list, and the "Model" drop-down list gives only those models that are in the database for this brand. Similarly with the "Body" list - only the bodies of this model that are currently in stock are shown. Well, there should be a couple of already independent "ticks".
I rummaged through the Internet and found only the so-called. "Dependent options" is when you select its options on the page of a specific product (and they change depending on the selected values ​​of other options). But this is not the case - what is needed is a search for the right products by a dependent filter.
I also found the "Mega Filter PRO" module for OpenCart for $60, but it's too fancy and there is a lot of extra stuff.
Can you suggest a simple ( paid/free ) solution? I'm even thinking of writing my module on purpose, but I don't really understand how best to do it: through categories, attributes, options or filters?

Answer 1

There are two more or less intelligent filters on Opencart:
1. Mega Filter PRO
2. Ocfilter
I rarely use Ocfilter, Mega Filter PRO has the ability to hide inactive options.