Google Places

example_place_search.rb

# "https://maps.googleapis.com/maps/api/place/search/json?key=AIzaSyDKpxPRiMFWSaF99KRLnGf6EiJPTGzuIvk&location=-33.966136,151.102687&name=harbour&radius=500&sensor=false&types=food"
search = Google::PlacesSearch.new({
  :lat      => "-33.966136", 
  :lng      => "151.102687",
  :radius   => "500",
  :types    => "food",
  :name     => "harbour",
  :sensor   => "false",
  :key      => "AIzaSyDKpxPRiMFWSaF99KRLnGf6EiJPTGzuIvk",
  :user_ip  => "184.60.81.8"
})

place.rb

module Google
  class Place
    attr_accessor :geometry, :icon, :google_id, :name, :reference, :types, :vicinity, :place_h

    def initialize(place={})
      @place_h   = place
      @geometry  = place['geometry']
      @icon      = place['icon']
      @google_id = place['id']
      @name      = place['name']
      @types     = place['types']
      @vicinity  = place['vicinity']
    end
  end
end

places_search.rb

module Google
  class PlacesSearch
    require "net/https"
    require "uri"
    require "json"
    require "cgi"
    require "addressable/uri"

    attr_reader :query

    ##
    # Initialize a new Google Places search with the specified query
    #
    #   search = Google::PlacesSearch.new({
    #     :lat => -33.966136,
    #     :lng => 151.102687,
    #     :radius   => 500,
    #     :types    => "food",
    #     :name     => "harbour",
    #     :sensor   => "false",
    #     :key      => "AIzaSyDKpxPRiMFWSaF99KRLnGf6EiJPTGzuIvk",
    #     :user_ip  => "184.60.81.8"
    #   })
    #
    def initialize(query={})
      @query = query
    end

    ##
    # Return new array of Google::PlacesSearch objects with json hash as attributes
    #
    def places
      @places ||= parse_json
    end

    ##
    # Retrive json utilizing Google Places API
    #
    def document
      uri = URI.parse(query_string(@query))
      http = Net::HTTP.new(uri.host, uri.port)
      http.use_ssl = true
      http.verify_mode = OpenSSL::SSL::VERIFY_NONE

      request = Net::HTTP::Get.new(uri.request_uri)

      response = http.request(request)
      response.body
    end

    ##
    # Bulid url from Google::PlacesSearch instance @query attribute
    #
    def query_string(query)
      values = {
        :location => "#{query[:lat]},#{query[:lng]}",
        :radius   => query[:radius],
        :types    => query[:types],
        :name     => query[:name],
        :sensor   => query[:sensor],
        :key      => "AIzaSyDKpxPRiMFWSaF99KRLnGf6EiJPTGzuIvk",
        :userIp   => query[:user_ip]
      }
      uri = Addressable::URI.new
      uri.query_values = values

      "https://maps.googleapis.com/maps/api/place/search/json?" + CGI::unescape(uri.query)
    end

    ##
    # Parse returned json and initialize an array of Google::Place objects
    #
    def parse_json
      attributes = JSON.parse(document)
      places = []
      attributes['results'].each do |place|
        places << Google::Place.new(place)
      end
      places
    end

  end
end