title: no implicit conversion of String into Integer error in ruby on rails
body: <p>I want access each of <code>1_1</code> <code>1_2</code> <code>1_3</code> from my rails views , 
  Now how i can define each of this in my <code>Odd</code> class to access them ?
  I get this error <code>no implicit conversion of String into Integer</code> on this line <code>Odd.new(args.fetch("1_1", {}))</code></p>
  
  <p>Json responce : </p>
  
  <pre><code>{
      "success": 1,
      "results": {
          "1_1": [
              {
                  "id": "1976855",
                  "home_od": "501.000",
                  "draw_od": "17.000",
                  "away_od": "1.025",
                  "ss": "0:1",
                  "time_str": "91",
                  "add_time": "1480296195"
              }
  ],
          "1_2": [
              {
                  "id": "1976855",
                  "home_od": "501.000",
                  "draw_od": "17.000",
                  "away_od": "1.025",
                  "ss": "0:1",
                  "time_str": "91",
                  "add_time": "1480296195"
              }
  ],
          "1_3": [
              {
                  "id": "1976855",
                  "home_od": "501.000",
                  "draw_od": "17.000",
                  "away_od": "1.025",
                  "ss": "0:1",
                  "time_str": "91",
                  "add_time": "1480296195"
              }
  ]
  }
  }
  </code></pre>
  
  <hr>
  
  <p>odd model</p>
  
  <pre><code>module Bapi
    class Odd &lt; Base
  
      attr_accessor :event_id,
                    :full_time
  
     CACHE_DEFAULTS = { expires_in: 7.day, force: false }
     def self.find(query = {})
        cache = CACHE_DEFAULTS
        response = Request.where("/v1/event/odds",CACHE_DEFAULTS, query)
        inplaies = response.fetch('results',[]).map { |odd| Odd.new(odd) }
        inplaies
      end
  
  
      def initialize(args = {})
        super(args)
        self.full_time =  parse_1x2(args)
      end
  
      def parse_1x2(args = {})
        Odd.new(args.fetch("1_1", {}))
      end
  
    end
  end
  </code></pre>