如何从红宝石上的哈希数组中提取ID？

Question

给出：

data = [
  {"id"=>nil, "votable_id"=>1150, "user_ids"=>"1120,1119,1118,1117,1116,1115,1114,1113,1112,1111,1110,1109,1108,1107"},
  {"id"=>nil, "votable_id"=>1151, "user_ids"=>"1120,1119,1118,1117,1116,1115,1114,1113,1112,1111,1110,1109,1108,1107"}
]

我希望返回字符串g["user_ids"]中所有整数的唯一表示的数组，该数组表示为g元素的所有散列data；即，>

["1120", "1119", "1118", "1117", "1116", "1115", "1114",
 "1113", "1112", "1111", "1110", "1109", "1108", "1107"]

给出：data = [{“ id” => nil，“ votable_id” => 1150，“ user_ids” =>“ 1120,1119,1118,1117,1116,1115,1114,1113,1112,1111,1110， 1109,1108,1107“}，{” id“ => nil，” votable_id“ => 1151，” user_ids“ => ...

Answer 1

如果使用Rails，请尝试以下操作：

Answer 2

要获得唯一的ID：

Answer 3

String#split