Module: LocationHelper

Defined in:
lib/helper/location_helper.rb

Instance Method Summary collapse

Instance Method Details

#transform(str) ⇒ Object 



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# File 'lib/helper/location_helper.rb', line 5

def transform(str)
  url = URI.escape("http://api.map.baidu.com/geocoder/v2/?address=#{str}&output=json&ak=A38d59da730152d77b407446a3c0dd2b")
  # Geocoding API:  http://developer.baidu.com/map/webservice-geocoding.htm
  # http://api.map.baidu.com/geocoder/v2/?address=%E5%BE%90%E5%AE%B6%E6%B1%87&output=json&ak=A38d59da730152d77b407446a3c0dd2b&callback=showLocation
  begin
    response = Net::HTTP.get_response(URI(url))
    data = response.body  # response may be nil when net is bad
    # TODO
    result = JSON.parse(data)
    # status 说明文档:  http://developer.baidu.com/map/webservice-geocoding.htm#.E6.8E.A5.E5.8F.A3.E7.A4.BA.E4.BE.8A
    if result["status"] != 0
      location = [0.0, 0.0]
    else
      # {"status"=>0, "result"=>{"location"=>{"lng"=>121.48026424818, "lat"=>31.229092805768}, "precise"=>1, "confidence"=>80, "level"=>"道路"}}
      # puts result["result"]["location"]
      location = []
      location << result["result"]["location"]["lng"]
      location << result["result"]["location"]["lat"]
    end
    return location
  rescue SocketError
    i ||= 0
    if i <= 5
      i += 1
      retry
    else
      return [0.1, 0.1]
    end
  end
end