How to make such search filters as on the site?

Question

opencart

I need to make the same filter on the opencart website as here https://autotema.ua/shiny?brand=nokian&season=zimnie tell me where to start. Thanks to everyone who helps.

Answer 1

1. Normal filter on the left
2. Filter and category selection on top:
- By parameters - a filtering page is generated
- By car brand - link to the desired category
When selecting a select, an AJAX request is sent that returns a new form taking into account the entered parameters.
I don't know how else to help. In general, the task is understandable, but rather voluminous, so that it is in one answer. And judging by your questions, you are more likely to freelance with this task.