arrays - 在 ruby​​ 中将数组转换为散列

Question

假设我有一个看起来像这样的数组

testarr = [["Actor", "Morgan", "33", ["A","B"]],
  ["Movie", "Titanic", "44", ["A","A"]],
  ["Actor", "Jack Black", "333", ["A","A"]]]

我想将其转换为哈希，最终将转换为 json。

我希望它看起来像

{

    "Actor" => { 
           {   "name" : "Morgan",
               "Age" : 33",
               "Films: { "A", "B" }} ,

           {   "name" : "Jack Black",
               "Age" : 44",
               "Films: { "A", "A" }}
           }
    "Movie" => {
           {    "Title" : "Titanic"
                "Gross" : "44"
                "Actors" : { "A", "A" }
           }
     }

不确定确切的格式，但只要有意义即可。

我试过了

def hashing(arr)
 hash = Hash.new

 arr.each do |item|

     if item[0] == "Movie"
       item.delete("Movie")
       hash["Movie"] = item
       item["Title"] = item[1]
       item["Movie"]["Box Office"] = item[2]
       item["Movie"]["Actors"] = item[3]

     else

        item.delete("Actor")
        hash["Actor"] = item

        item["Actor"]["Name"] == item[1]
        item["Actor"]["Age"] == item[2]
        item["Actor"]["Filmography"] == item[3]

     end

   end

  return hash

end

testarr = [["Actor", "Morgan", "33", ["dsfds","dsfdsf"]],
  ["Movie", "Titanic", "44", ["dsfds","dfdsf"]],
  ["Actor", "Jack Black", "333", ["ssdsfds","dsfdsf"]]]

puts hashing(testarr)

但是当我将数组项放入“Movie”和“Actor”然后尝试创建“Name”和“Age”之类的键时，它给了我一个错误。

我怎样才能按照自己的意愿制作这个？

Answer 1

testarr = [["Actor", "Morgan", "33", ["A","B"]],
  ["Movie", "Titanic", "44", ["A","A"]],
  ["Actor", "Jack Black", "333", ["A","A"]]]

  a = Hash.new{ |h,k| h[k] = [] }

  testarr.each do |arr|
    b = {name: arr[1], age: arr[2], films: arr[3]}
    a[arr[0]] << b
  end

这会产生

{"Actor"=>[{"name"=>"Morgan", "age"=>"33", "films"=>["A", "B"]}, {"name"=>"Jack Black", "age"=>"333", "films"=>["A", "A"]}], "Movie"=>[{"name"=>"Titanic", "age"=>"44", "films"=>["A", "A"]}]}