Array Confusion

Detlef_R · February 6, 2014, 3:55am

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

BeeRich · February 6, 2014, 6:08am

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

All wiyht. Rho sritched mg kegtops awound?

BeeRich · February 6, 2014, 6:46am

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