Question

我正在编写API解析器，我正在努力格式化数据。

到目前为止，我有以下代码：

data.each {|season| episodes[season["no"].to_i] = season["episode"].group_by{|i| i["seasonnum"].to_i}}

但是，唯一的问题是输出结果如下：

8 => {
     1 => [
        [0] {
                "epnum" => "150",
            "seasonnum" => "01",
              "prodnum" => "3X7802",
              "airdate" => "2012-10-03",
                 "link" => "http://www.tvrage.com/Supernatural/episodes/1065195189",
                "title" => "We Need to Talk About Kevin"
        }
    ],
     2 => [
        [0] {
                "epnum" => "151",
            "seasonnum" => "02",
              "prodnum" => "3X7803",
              "airdate" => "2012-10-10",
                 "link" => "http://www.tvrage.com/Supernatural/episodes/1065217045",
                "title" => "What's Up, Tiger Mommy?"
        }
    ]
}

因此，在二级哈希的每个值中都有一个冗余数组。我如何删除此数组并只有内部哈希？所以，例如我想：

8 => {
     1 => {
                "epnum" => "150",
            "seasonnum" => "01",
              "prodnum" => "3X7802",
              "airdate" => "2012-10-03",
                 "link" => "http://www.tvrage.com/Supernatural/episodes/1065195189",
                "title" => "We Need to Talk About Kevin"
        }
    ,

等

编辑：这是完整的文件：

require 'httparty'
require 'awesome_print'
require 'debugger'
require 'active_support'

episodes = Hash.new{ [] }
response = HTTParty.get('http://services.tvrage.com/feeds/episode_list.php?sid=5410')
data = response.parsed_response['Show']['Episodelist']["Season"]

data.each { |season|
  episodes[season["no"].to_i] = season["episode"].group_by{ |i|
    i["seasonnum"].to_i
  }
}

ap episodes

输入数据：http://services.tvrage.com/feeds/episode_list.php?sid=5410

Answer 1

疯狂猜测：

data.each { |season|
  episodes[season["no"].to_i] = season["episode"].group_by{ |i|
    i["seasonnum"].to_i
  }.first
}

Answer 2

当你真正想要index_by（每个键一个条目）时，看起来你正在使用group_by（具有相同键的条目数组）。

data.each {|season| episodes[season["no"].to_i] = season["episode"].index_by {|i| i["seasonnum"].to_i}}

注意：如果你有多个具有相同seasonnum的剧集，你应该使用group by并在这里有一组值。如果您只是通过方便的查找（一对一映射）构建剧集的哈希，那么index_by就是您想要的。

如何从一个哈希的数组中提取哈希？

2 个答案: