Your Layered Navigation, In The Search Box

Measured

23 Attributes, Configured Once

On Magento’s own sample data, 23 attributes are marked filterable — colour, size, material, activity, style, climate, gender and the rest. Those are exactly the filters that appear beside NitroSearch results, with the option labels a shopper reads rather than the internal ids.

We keep no list of our own. Add a filterable attribute in Magento and it appears in search; stop using one and it disappears. A list maintained by us would be wrong for your catalogue on the day you changed it.

-- the rule, in one line
catalog_eav_attribute.is_filterable > 0
   OR catalog_eav_attribute.is_filterable_in_search = 1

Why it matters

Search Results Are Where Filters Are Missing

Layered navigation is the part of Magento merchants tune most, and it is strongest exactly where a shopper is browsing a category. The search results page is where the same shopper arrives with the least patience and the most intent — and where a bare list of matches gives them nothing to narrow with.

Stock and sale state come along too, from the same catalogue, so “in stock only” is one click rather than a scroll.

Ranking

Your Bestsellers, Not Our Guess

When two products match equally well, the one that sells goes first — using Magento’s own bestseller figures, so ranking agrees with the numbers in your admin.

If your store has never run Magento’s sales aggregation, we send no popularity signal at all rather than a zero for everything. A zero across a whole catalogue is a fact about a scheduled job, not about your products.