Thinking sphinx geosearch issues - ruby-on-rails

Question

I need to search locations with sort by distance from passed coordinates.
app/indices/location_index.rb
ThinkingSphinx::Index.define :location, :with => :active_record do
indexes :name
has latitude, longitude
end
Try to search:
> Location.search(:geo => [53.348962, 83.777988], :order => "#geodist DESC").size
ThinkingSphinx::SyntaxError: sphinxql: syntax error, unexpected USERVAR, expecting IDENT (or 5 other tokens) near '#geodist DESC LIMIT 0, 20; SHOW META'
> Location.search(:geo => [53.348962, 83.777988],:with => {"#geodist" => 0.0..5000.0}, :order => "#geodist DESC").size
ThinkingSphinx::SphinxError: sphinxql: only >=, <=, and BETWEEN floating-point filter types are supported in this version near '#geodist BETWEEN 0.0 AND 5000.0 AND sphinx_deleted = 0 ORDER BY #geodist DESC LIMIT 0, 20; SHOW META'
Sphinx 2.0.6-release (r3473; Oct 22, 2012)
thinking-sphinx (3.0.1)
Update:
Pat Allan suggested:
Geodist no longer requires the # symbol - so try the following instead:
Location.search(:geo => [53.348962, 83.777988], :order => "geodist DESC").size
Location.search(:geo => [53.348962, 83.777988],:with => {:geodist => 0.0..5000.0}, :order => "geodist DESC").size

Answer 1

Just in case people find this question thought I'd add the answer in the correct format and with a little more explanation.
Versions of Sphinx prior to 2.1.1 made the calculated distance available via the #geodist internal variable. In versions of Thinking Sphinx compatible with newer versions of Sphinx the value of GEODIST() has been aliased to geodist.
So this:
Location.search(:geo => [53.348962, 83.777988], :order => "#geodist DESC").size
Becomes:
Location.search(:geo => [53.348962, 83.777988], :order => "geodist DESC").size
It's also worth pointing out in this example that the coordinates being supplied in the above example are in the incorrect format. They're in degrees rather than radians: http://pat.github.io/thinking-sphinx/geosearching.html. To transform them you can do:
def degrees_to_radians(degrees)
degrees * Math::PI / 180
end
Hope that helps!