Array Confusion

BeeRich · February 6, 2014, 2:53am

I have the following instruction that returns an array that I’m quite confused about. I can’t even read it. Can someone shed some light as to how to reach into this array of hashes (that’s what I can see) to get the location lat and lon?

res = Geocoder.search(addy1)

This is the res:

[#<Geocoder::Result::Google:0x007fb46c345e18 @data={"address_components"=>[{"long_name"=>"1600", "short_name"=>"1600", "types"=>["street_number"]}, {"long_name"=>"Amphitheatre Parkway", "short_name"=>"Amphitheatre Pkwy", "types"=>["route"]}, {"long_name"=>"Mountain View", "short_name"=>"Mountain View", "types"=>["locality", "political"]}, {"long_name"=>"California", "short_name"=>"CA", "types"=>["administrative_area_level_1", "political"]}, {"long_name"=>"United States", "short_name"=>"US", "types"=>["country", "political"]}, {"long_name"=>"94043", "short_name"=>"94043", "types"=>["postal_code"]}], "formatted_address"=>"1600 Amphitheatre Parkway, Mountain View, CA 94043, USA", "geometry"=>{"location"=>{"lat"=>37.4219985, "lng"=>-122.0839544}, "location_type"=>"ROOFTOP", "viewport"=>{"northeast"=>{"lat"=>37.4233474802915, "lng"=>-122.0826054197085}, "southwest"=>{"lat"=>37.4206495197085, "lng"=>-122.0853033802915}}}, "types"=>["street_address"]}, @cache_hit=nil>]

Outside of the conversion of string to integer errors (?), I can’t traverse this array because it holds a comment in the first line there, before an instance variable is set to the data. Quite confused. Any insight appreciated.

Cheers

Gautam_Rege1 · February 6, 2014, 5:06am

Your’e looking at the result in correctly,— that is not a comment in the array! Its the “stringified” output of the array that contains Geocoder::Result objects.

res = Geocoder.search(addy1).first

res.data # => gives you entire data .. seen as @data and then you can traverse as a hash

There are other helper routines too (a few mentioned below). res.address res.city res.state res.formatted_address res.coordinates

etc. See these two files to learn all the methods of Geocoder::Result

github.com

alexreisner/geocoder/blob/master/lib/geocoder/results/google.rb

require 'geocoder/results/base'

module Geocoder::Result
  class Google < Base

    def coordinates
      ['lat', 'lng'].map{ |i| geometry['location'][i] }
    end

    def address(format = :full)
      formatted_address
    end

    def neighborhood
      if neighborhood = address_components_of_type(:neighborhood).first
        neighborhood['long_name']
      end
    end

    def city

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github.com

alexreisner/geocoder/blob/master/lib/geocoder/results/base.rb

module Geocoder
  module Result
    class Base

      # data (hash) fetched from geocoding service
      attr_accessor :data

      # true if result came from cache, false if from request to geocoding
      # service; nil if cache is not configured
      attr_accessor :cache_hit

      ##
      # Takes a hash of data from a parsed geocoding service response.
      #
      def initialize(data)
        @data = data
        @cache_hit = nil
      end

      ##

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Cheers! @gautamrege

BeeRich · February 6, 2014, 5:45am

I see. Now it is clear. I was under the impression that the inspect method was just a representation of the returned array. Good to know. Thanks for the notes.

Cheers