Ruby:从字符串到JSON数组

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"
    }
]

转换 JSON string 从API返回到JSON字符串的Ruby数组中,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\"}"]

或短:

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