如何通过转换键和值对过滤ruby中的有效负载响应

下面是一个作为字符串分配给字符串的有效负载响应，需要将其转换为哈希

{"method_name":"My function","success":true,"payload":[{"Type":"SM::Mod::Elu","Properties":{"TVset":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::VirtualArea","Properties":{"vad_val":{"Type":"String","Mutable":false,"Value":"0001"},"enabled":{"Type":"TrueClass","Mutable":false,"Value":true}},"Children":{"Music":{"Type":"SM::Mod::Base","Properties":{"reg_id":{"Type":"Fixnum","Mutable":true,"Value":null},"buffer_value":{"Type":"Fixnum","Mutable":true,"Value":10},"special_handling_table":{"Type":"SM::Mod::SpecialHandlingTable","Properties":{"behaviors_val":{"Type":"Hash","Mutable":false,"Value":{"1":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::Replace","Properties":{"direct":{"Type":"String","Mutable":true,"Value":"From"}},"Children":{}},{"Type":"SM::Mod::Behavior","Properties":{"direct_val":{"Type":"String","Mutable":true,"Value":"From"}},"Children":{}}],"IsActiveChange":null},"2":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::ReplaceSH","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"Fromnetwork"}},"Children":{}}],"IsActiveChange":null},"3":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::DropBehavior","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"Fromnetwork"}},"Children":{}}],"IsActiveChange":null},"4":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::StripHeaderres","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"ToTransport"}},"Children":{}},{"Type":"SM::Mod::DropBehavior","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"FromTransport"}},"Children":{}}],"IsActiveChange":null},"5":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::StripHeaderBehavior","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"Tosnmp"}},"Children":{}},{"Type":"SM::Mod::DropBehavior","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"FromTransport"}},"Children":{}}],"IsActiveChange":null},"6":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::ReplaceSHBehavior","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"Fromconn"}},"Children":{}}],"IsActiveChange":null},"7":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::Dropfem","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"FromTransport"}},"Children":{}}],"IsActiveChange":null},"8":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::Dropfem","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"From"}},"Children":{}}],"IsActiveChange":null},"9":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::DropBehavior","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"From"}},"Children":{}}],"IsActiveChange":null}},"IsActiveChange":null}},"Children":{}}},"Children":{}}}}],"IsActiveChange":null},"number":{"Type":"Fixnum","Mutable":false,"Value":0,"IsActiveChange":false},"connections":{"Type":"Fixnum","Mutable":true,"Value":null},"threads":{"Type":"Fixnum","Mutable":true,"Value":4},"updates":{"Type":"TrueClass","Mutable":true,"Value":null},"severity":{"Type":"Fixnum","Mutable":true,"Value":3},"levelval":{"Type":"Fixnum","Mutable":true,"Value":3},"facility":{"Type":"Fixnum","Mutable":true,"Value":3},"trace":{"Type":"smode::Depval::Fallback","Properties":{"enabled":{"Type":"TrueClass","Mutable":true,"Value":false},"depend":{"Type":"String","Mutable":false,"Value":""}},"Children":{}}},"Children":{}}],"error":""}

我需要通过解析创建键和值对：

vad_val => "001" , enabled => true , req_id => NULL, buffer_value =>10 

等等，直到结束。我需要将string、fixnum和TrueClass的所有元素捕获为具有键和值对的哈希

我可以理解以下代码：

parsed = JSON.parse(string) # it returns a hash
p parsed["properties"]["someKey"]=value

---

可以将字符串转换为哈希，但我不确定如何进行这种过滤。它需要进一步通过JSON来检索哈希，但它将存储所有其他不需要的信息。如何执行筛选以获取某个键作为键vad_val和值0001等？我将感谢您在这方面的帮助。

我不完全理解您希望最终价值是什么样子。但是，您将迭代哈希以生成所需的任何值

filtered_parsed = parsed.select {|k,v| v.is_a? String}

---

这将仅选择值为字符串的元素。希望这能让你走上正确的方向。查看ruby库中的Enumerable以了解更多选项

据我所知，您希望遍历从原始数据创建的JSON，并且对于每个嵌套的键/哈希，其中哈希的类型键为String、TrueClass或Fixnum，您希望生成一个输出键/值，该输出键/值由哈希中的键和值键的值组成

这应该可以做到。它递归地检查原始JSON结构中的所有子哈希和数组，以查找上述匹配项

raw_data = '{"method_name":"My function","success":true,"payload":[{"Type":"SM::Mod::Elu","Properties":{"TVset":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::VirtualArea","Properties":{"vad_val":{"Type":"String","Mutable":false,"Value":"0001"},"enabled":{"Type":"TrueClass","Mutable":false,"Value":true}},"Children":{"Music":{"Type":"SM::Mod::Base","Properties":{"reg_id":{"Type":"Fixnum","Mutable":true,"Value":null},"buffer_value":{"Type":"Fixnum","Mutable":true,"Value":10},"special_handling_table":{"Type":"SM::Mod::SpecialHandlingTable","Properties":{"behaviors_val":{"Type":"Hash","Mutable":false,"Value":{"1":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::Replace","Properties":{"direct":{"Type":"String","Mutable":true,"Value":"From"}},"Children":{}},{"Type":"SM::Mod::Behavior","Properties":{"direct_val":{"Type":"String","Mutable":true,"Value":"From"}},"Children":{}}],"IsActiveChange":null},"2":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::ReplaceSH","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"Fromnetwork"}},"Children":{}}],"IsActiveChange":null},"3":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::DropBehavior","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"Fromnetwork"}},"Children":{}}],"IsActiveChange":null},"4":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::StripHeaderres","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"ToTransport"}},"Children":{}},{"Type":"SM::Mod::DropBehavior","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"FromTransport"}},"Children":{}}],"IsActiveChange":null},"5":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::StripHeaderBehavior","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"Tosnmp"}},"Children":{}},{"Type":"SM::Mod::DropBehavior","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"FromTransport"}},"Children":{}}],"IsActiveChange":null},"6":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::ReplaceSHBehavior","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"Fromconn"}},"Children":{}}],"IsActiveChange":null},"7":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::Dropfem","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"FromTransport"}},"Children":{}}],"IsActiveChange":null},"8":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::Dropfem","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"From"}},"Children":{}}],"IsActiveChange":null},"9":{"Type":"Array","Mutable":false,"Value":[{"Type":"SM::Mod::DropBehavior","Properties":{"decision":{"Type":"String","Mutable":true,"Value":"From"}},"Children":{}}],"IsActiveChange":null}},"IsActiveChange":null}},"Children":{}}},"Children":{}}}}],"IsActiveChange":null},"number":{"Type":"Fixnum","Mutable":false,"Value":0,"IsActiveChange":false},"connections":{"Type":"Fixnum","Mutable":true,"Value":null},"threads":{"Type":"Fixnum","Mutable":true,"Value":4},"updates":{"Type":"TrueClass","Mutable":true,"Value":null},"severity":{"Type":"Fixnum","Mutable":true,"Value":3},"levelval":{"Type":"Fixnum","Mutable":true,"Value":3},"facility":{"Type":"Fixnum","Mutable":true,"Value":3},"trace":{"Type":"smode::Depval::Fallback","Properties":{"enabled":{"Type":"TrueClass","Mutable":true,"Value":false},"depend":{"Type":"String","Mutable":false,"Value":""}},"Children":{}}},"Children":{}}],"error":""}'
require 'json'

def breakdown(set, result = {})
  if set.class == Hash # iterate through hash
    set.each do |k, v|
      if v.class == Hash && %w(String TrueClass Fixnum).include?((v["Type"] || ''))
        result[k.to_sym] = v["Value"] # add this key's value to the output array
      elsif v.class == Hash || v.class == Array
        result = breakdown(v, result) # check nested arrays and hashes
      end
    end
  elsif set.class == Array
    set.each do |a|
      result = breakdown(a, result) # check elements of an array
    end
  end
  result
end

broken_down = breakdown(JSON.parse(raw_data))
p broken_down
#> {:vad_val =>"0001", :enabled =>false, :reg_id =>nil, :buffer_value =>10, :direct =>"From", :direct_val =>"From", :decision =>"From", :number =>0, :connections =>nil, :threads =>4, :updates =>nil, :severity =>3, :levelval =>3, :facility =>3, :depend =>""}

编辑

---

修改了上述内容，以确保键是符号而不是字符串，以匹配所需的输出

我不仅要查找字符串，还要查找Trueclass和fixnum。由于散列和数组不会返回任何有意义的值，所以我需要递归地再次查找值。如果您看到有效负载响应，那么您可以理解在属性部分depend、enabled和facility下有类型string、TrueClass和fixnum，所以我想将它们作为键读取，并将其对应的值读取为、false和3。我希望这能澄清您的疑问。感谢steve提供此解决方案。我只能看到您对string TrueClass和FIxnum所做的更改。是否也更新了symbol？否，原始字符串中的任何数据都不是symbol对象。我的意思是，我没有生成vad_val=>001，而是将其更改为production:vad_val=>001。我所做的更改是将result[k]=v[Value]替换为result[k.to_sym]=v[Value]，如果您更喜欢vad_val=>001而不是：vad_val=>001，那么只需删除to_sym方法即可。在我当前共享的文件中，我只有这三种类型，但基于负载响应，我可能有其他类型，如，number，bool和symbol。在这种情况下，我相信我只需要在v.class==Hash&&%wString TrueClass Fixnum number bool.include？v[Type]下面添加like||