Attributes. Filter
Default Opencart filter
Unlike additional filtering modules that use product attributes and options, the default OpenCart filter works with filters and filter groups pre-created in Admin -> Filters.
Using the site's filter allows visitors to quickly and conveniently find the desired product groups without browsing through dozens or hundreds of categories:

In this example, filter groups are marked in red. The filter groups should be created manually in the admin panel in the "Filters" section:

The plugin will do the rest of the work.
Filters import
The following sequence of actions is recommended:
1. Make an export of products belonging to a certain category ("Tools" tab):


In the export price list (file admin/uploads/ex.xml) find the columns with product attributes:

2. Set up product attributes update, as follows:

3. Set the attribute update rules in the supplier's form first tab, save the form, and start file processing.

As a result, filters in groups will be created in the admin panel:

and in the products in the "Links" tab the filters will be filled:

Comma-separated attribute values are added as separate filters.
4. In the admin panel, go to the category whose products you exported (in our example Laptops & Notebooks ->Category Filter Demo ) and select the filters that should be shown in this category:
