Only some of our pages have a certain field associated with them. Let's call that field translated_ja and the value would be a URL string. I want to provide a filter on the form that ultimately calls the swiftype search.json API endpoint. I don't see a way to filter results via the JSON to only return results where that field exists in the document.
Is this supported? Anyone have any clever workarounds? I know I could apply some javascript after the call, but ideally I would just do this via the call. Looks like