Ruby:从字符串到 JSONS 数组

Ruby: From a String to an Array of JSONS

我有一个从 post 表单中检索到的字符串,看起来像这样

"[{"Name": "David", "ID": "2"}, {"Name": "Logan" , "ID": "3"}]"

我想自己迭代访问每个 JSON 对象。或者理想情况下,将此字符串转换为 Ruby 中 JSON 的数组。知道怎么做吗?

使用JSON.parse:

require 'json'
=> true
JSON.parse('[{"Name": "David", "ID": "2"}, {"Name": "Logan" , "ID": "3"}]')
=>
[
    [0] {
        "Name" => "David",
          "ID" => "2"
    },
    [1] {
        "Name" => "Logan",
          "ID" => "3"
    }
]

要将 API 返回的 JSON string 转换为 JSON 字符串的 Ruby 数组,我会这样做:

json = '[{"Name": "David", "ID": "2"}, {"Name": "Logan" , "ID": "3"}]'

require 'json'

ruby_array_of_ruby_hashes = JSON.parse(json)
ruby_array_of_json = ruby_array_of_ruby_hashes.map(&:to_json)
#=> ["{\"Name\":\"David\",\"ID\":\"2\"}","{\"Name\":\"Logan\",\"ID\":\"3\"}"]

或简称:

JSON.parse(json).map(&:to_json)