Send a request to the traffic REST API.
# File lib/ym4r/yahoo_maps/building_block/traffic.rb, line 11 def self.get(param) unless param.has_key?(:street) or param.has_key?(:city) or param.has_key?(:state) or param.has_key?(:zip) or param.has_key?(:location) or (param.has_key?(:longitude) and param.has_key?(:latitude)) raise MissingParameterException.new("Missing location data for the Yahoo! Maps Traffic service") end url = "http://api.local.yahoo.com/MapsService/V1/trafficData?appid=#{Ym4r::YahooMaps::APP_ID}&" url << "street=#{param[:street]}&" if param.has_key?(:street) url << "city=#{param[:city]}&" if param.has_key?(:city) url << "state=#{param[:state]}&" if param.has_key?(:state) url << "zip=#{param[:zip]}&" if param.has_key?(:zip) url << "location=#{param[:location]}&" if param.has_key?(:location) url << "latitude=#{param[:latitude]}&" if param.has_key?(:latitude) url << "longitude=#{param[:longitude]}&" if param.has_key?(:longitude) url << "image_type=#{param[:image_type]}&" if param.has_key?(:image_type) #defaults to PNG url << "image_height=#{param[:image_height]}&" if param.has_key?(:image_height) #defaults to 500 url << "image_width=#{param[:image_width]}&" if param.has_key?(:image_width) #defaults to 620 url << "zoom=#{param[:zoom]}&" if param.has_key?(:zoom) #defaults to 6 url << "radius=#{param[:radius]}&" if param.has_key?(:radius) url << "include_map=#{param[:include_map]?1:0}&" if param.has_key?(:include_map) url << "severity=#{param[:severity]}&" if param.has_key?(:severity) url << "output=xml" begin xml = open(URI.encode(url)).read rescue OpenURI::HTTPError => error raise BadRequestException.new(error.to_s) rescue raise ConnectionException.new("Unable to connect to Yahoo! Maps Traffic REST service") end doc = REXML::Document.new(xml) if doc.root.name == "Error" raise RateLimitExceededException.new("Rate limit exceeded for Yahoo! Maps Traffic REST service") else results = Traffic::ResultSet.new(Time.at(doc.root.elements['LastUpdateDate'].text.to_i),doc.root.elements['Warning'].nil? ? nil : doc.root.elements['Warning'].text) doc.root.elements.each('//Result') do |result| data = result.elements results << Traffic::Result.new(result.attributes['type'], data['Title'].text, data['Description'].text, data['Latitude'].text.to_f, data['Longitude'].text.to_f, data['Direction'].text, data['Severity'].text.to_i, Time.at(data['ReportDate'].text.to_i), Time.at(data['UpdateDate'].text.to_i), Time.at(data['EndDate'].text.to_i), data['ImageUrl'].nil? ? nil : data['ImageUrl'].text) end results end end