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Retrieve City, State, and Zip info from Google Geocoding service, by passing in a Zipcode

/ Published in: Ruby
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  1. require 'net/http'
  2. require 'uri'
  3. require "rexml/document"
  4.  
  5. # Retrieves US Location data based on a passed in Zipcode. Uses
  6. # Google Maps geocoding service to retrieve a Hash of city, state, and zip
  7. # For more info on the service see: http://code.google.com/apis/maps/documentation/geocoding/
  8. # 
  9. # example:
  10. #   puts get_location_data(97030).inspect
  11. # outputs:
  12. #   {:state=>"OR", :zip=>"97030", :city=>"Gresham"}
  13.  
  14. def get_location_data(zip)
  15.   url = "http://maps.google.com/maps/geo"
  16.   uri = URI.parse(url)
  17.  
  18.   req = Net::HTTP::Get.new(uri.path + "?output=xml&q=#{zip}")
  19.   res = Net::HTTP.start(uri.host, uri.port) do |http|
  20.     http.request(req)
  21.   end
  22.  
  23.   data = res.body
  24.   result = {}
  25.   address = ""
  26.  
  27.   doc = REXML::Document.new data
  28.  
  29.   doc.elements.each('//Placemark[1]/address') do |element|
  30.     address = element.text
  31.   end
  32.  
  33.   if address
  34.     parts = address.split(/[,\s*]/)
  35.     result[:city] = parts[0]
  36.     result[:state] = parts[2]
  37.     result[:zip] = parts[3]
  38.   end
  39.  
  40.   result  
  41. end

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