[英]How to convert recursive/nested OpenStruct Object to Hash
I have an OpenStruct object and needs to convert to JSON data.我有一个 OpenStruct 对象,需要转换为 JSON 数据。
Sample Hash (from RSPEC helper):样本哈希(来自 RSPEC 助手):
def test_order
{
"id": 505311428702,
"email": "test@gmail.com",
"closed_at": "",
"discount_codes": {
"id": 507328175,
"text": "test"
}
}
end
I'm using, below function for recursive:我正在使用以下函数进行递归:
def to_recursive_ostruct(hash)
OpenStruct.new(hash.each_with_object({}) do |(key, val), memo|
memo[key] = val.is_a?(Hash) ? to_recursive_ostruct(val) : val
end)
end
For ex to_recursive_ostruct(test_order), will return:对于前 to_recursive_ostruct(test_order),将返回:
<OpenStruct id=505311428702, email="test@gmail.com", closed_at="", ...>
Once converted, using OpenStructObject.marshal_dump :转换后,使用OpenStructObject.marshal_dump :
{
:id=>505311428702, :email=>"test@gmail.com", :closed_at=>"",
discount_codes=>#<OpenStruct id=507328175, text= "test">}
}
OpenStructObject.marshal_dump gives me the right data in first level, OpenStructObject.marshal_dump在第一级给了我正确的数据,
I want also the nested data to beconverted.我还希望转换嵌套数据。
What I really need is like:我真正需要的是:
{:id=>505311428702, :email=>"test@gmail.com", :closed_at=>"", :discount_codes=>{:id=>507328175, :text=> "test"} }
Please help, thanks in advance.请帮忙,提前致谢。
Building on work done by @Andrey-Deineko, @owyongsk, @aldrien.h here is a converter that handles arrays.在@Andrey-Deineko、@owyongsk、@aldrien.h 完成的工作的基础上,这里是一个处理数组的转换器。 While the OP wasn't looking this in particular, others may find it helpful.
虽然 OP 并没有特别关注这一点,但其他人可能会发现它有帮助。
def openstruct_to_h(object)
object.to_h.transform_values do |value|
value.is_a?(OpenStruct) ? openstruct_to_h(value) : value.is_a?(Array) ? value.map{|v| v.is_a?(String) ? v : openstruct_to_h(v) } : value
end
end
# Example usage
open_struct_object = OpenStruct.new(paramtest: "ok", array_test: [OpenStruct.new(array_one: true), OpenStruct.new(array_two: false, nested_os: OpenStruct.new(works: 'maybe'))], os_test: OpenStruct.new(testy: "yup"))
openstruct_to_h(open_struct_object)
=> {:paramtest=>"ok", :array_test=>[{:array_one=>true}, {:array_two=>false, :nested_os=>{:works=>"maybe"}}], :os_test=>{:testy=>"yup"}}
You can use OpenStruct#marshal_dump
:您可以使用
OpenStruct#marshal_dump
:
openstruct_object.marshal_dump
OpenStruct#to_h
will work, too: OpenStruct#to_h
也可以工作:
openstruct_object.to_h
You can convert your object to hash and then hash to JSON:您可以将对象转换为哈希,然后将哈希转换为 JSON:
openstruct_object.to_h.to_json
But it looks like what you want is a Hash object, not JSON object.但看起来您想要的是 Hash 对象,而不是 JSON 对象。
To convert your deep openstruct to hash you could go with something along these lines:要将您的深度 openstruct 转换为哈希,您可以使用以下方法:
def deep_openstruct_to_hash(object)
object.each_pair.with_object({}) do |(key, value), hash|
hash[key] = value.is_a?(OpenStruct) ? deep_openstruct_to_hash(value) : value
end
end
Then:然后:
openstruct_object = to_recursive_ostruct(test_order)
#=> #<OpenStruct id=505311428702, email="test@gmail.com", closed_at="", discount_codes=#<OpenStruct id=507328175, text="test">>
deep_openstruct_to_hash(openstruct_object)
# {
# :id=>505311428702,
# :email=>"test@gmail.com",
# :closed_at=>"",
# :discount_codes=>{
# :id=>507328175,
# :text=>"test"
# }
# }
On Ruby 2.4+, you can use transform_values
together with a recursive function in a monkey patch.在 Ruby 2.4+ 上,您可以在猴子补丁中将
transform_values
与递归函数一起使用。
class OpenStruct
def deep_to_h
to_h.transform_values do |v|
v.is_a?(OpenStruct) ? v.deep_to_h : v
end
end
end
Or if you don't want to monkey patch或者如果你不想猴子补丁
def deep_to_h(obj)
obj.to_h.transform_values do |v|
v.is_a?(OpenStruct) ? deep_to_h(v) : v
end
end
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