gems Rails rant software development

Thinking-Sphinx :with => @geodist returns no results

Having just recently started using Thinking Sphinx, I’ve been toying with the geograhical search that it provides to simply do distance-based searches while querying other information. The Geo-searching part of the manual shows how to do searches limiting distance:

# Searching for places within 10km "pancakes", :geo => [@lat, @lng],
  :with => {"@geodist" => 0..10_000}
# Searching for places sorted by closest first "pancakes", :geo => [@lat, @lng],
  :order => "@geodist ASC, @relevance DESC"

Unfortunately, the first style of query where @geodist is limited in range – when used as-is – does not work I found in my testing that I could order by @geodist as per the second query but when I added the :with range, I had no results.

The solution was actually simple, but really annoying. You have to use Floats instead of Integers for the range numbers! So changing the first query to: "pancakes", :geo => [@lat, @lng],
  :with => {"@geodist" => 0.0..10_000.0}

# or more neatly "pancakes", :geo => [@lat, @lng],
  :with => {"@geodist" =>, 10_000.0)}

makes it all work. Now to get someone to update those docs!
Update: Updated!