I have a Low Search results page where I want to filter the results based on the presence of a value in one or more custom fields. In this case I am searching across two collections and I want to filter the results to only include entries where custom_field_1 OR custom_field_2 have a positive integer value.
{exp:low_search:results search:custom_field_1=">0" search:custom_field_2=">0" query="{segment_3}"}
However of course the tag above will only return entries where both fields are a positive integer, not one or the other.
The reason for doing this? I've populated an integer field in each of the channels I'm using with Expresso Store with a 1 or 0 using a custom extension that checks if a price is set. I thought this might be a neat way to be able to leverage Low Search with Store entries but alas, because I have multiple store channels I'm stumped at the last hurdle! Any ideas?