lib/nominatim.rb

   1 module Nominatim
   2   def self.describe_location(lat, lon, zoom = nil, language = nil)
   3     zoom = zoom || 14
   4     language = language || request.user_preferred_languages.join(',')
   5
   6     Rails.cache.fetch "/nominatim/location/#{lat}/#{lon}/#{zoom}/#{language}" do
   7       url = "http://nominatim.openstreetmap.org/reverse?lat=#{lat}&lon=#{lon}&zoom=#{zoom}&accept-language=#{language}"
   8
   9       begin
  10         response = OSM::Timer.timeout(4) do
  11           REXML::Document.new(Net::HTTP.get(URI.parse(url)))
  12         end
  13       rescue Exception
  14         response = nil
  15       end
  16
  17       if response and result = response.get_text("reversegeocode/result")
  18         result.to_s
  19       else
  20         "#{number_with_precision(lat, :precision => 3)}, #{number_with_precision(lon, :precision => 3)}"
  21       end
  22     end
  23   end
  24 end