The default filters in Opencart uses logic "OR" for all values, regardless of the filter group.

FixFilter OC2x modifies the default Opencart 2.0 & 3.0 filters to filter products with "OR" (products in group) and "AND" (for GROUPS) logic.

DEMO 2x / ADMIN 2x
DEMO 3x / ADMIN 3x

Designed for Opencart versions 2.0.0.0 - 3.0.3.x
Does not change core files or DB, works through OCMOD

This fix is not necessary if you use a third-party filter (such as FilterPro, MegaFilter etc)

Based on this solution for Opencart 1.5.x

How to use standard filter in Opencart:
1. Go to Catalog > Filters and press button Add new. After, fill the Filter Group Name and create filters for this group (Add filter)
2. Edit the desired products into Catalog > Products to assign them the necessary filters (tab Links > Filters)
3. Edit the desired categories into Catalog > Categories to assign them the necessary filters (tab Data > Filters)
4. Go to Extensions > Modules, select the Filter, press Install button and enable him
5. Into Design > Layouts select the necessary layout and add Filter > Filter for the required position

And check works of filter in the storefront on the page of the desired category for her goods


Install 2x
1. Upload file fix_filter.ocmod.xml from folder 2x in Extensions->Installer
2. Refresh the modifications cache (press Refresh button) in Extensions->Modifications

Install 3x
1. Upload file fix_filter.ocmod.zip from folder 3x in Extensions->Installer
2. Refresh the modifications cache (press Refresh button) in Extensions->Modifications

Don't forget refresh modifications cache after install!

OTHER MODULES: