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Ruby: Implement SerializableStruct
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| require 'json' | |
| module SerializableStruct | |
| class Dummy | |
| def self.members | |
| @members | |
| end | |
| def initialize(*vals) | |
| vals.each_with_index do |val, idx| | |
| send("#{self.class.members[idx]}=", val) | |
| end | |
| end | |
| def to_h | |
| self.class.members.each_with_object({}) do |it, acc| | |
| val = send(it) | |
| acc[it] = val.is_a?(Dummy) ? val.to_h : val | |
| end | |
| end | |
| def to_json | |
| to_h.to_json | |
| end | |
| def hash | |
| to_h.hash | |
| end | |
| end | |
| def self.new(*members) | |
| Class.new(Dummy) do | |
| @members = members | |
| attr_accessor *members | |
| yield self if block_given? | |
| end | |
| end | |
| end | |
| Parent = SerializableStruct.new(:child1, :child2) do | |
| Child1 = SerializableStruct.new(:name, :surname) | |
| Child2 = SerializableStruct.new(:name, :nickname) | |
| end | |
| structure = Parent.new( | |
| Child1.new("test", "good"), | |
| Child2.new("haha", "hehe") | |
| ) | |
| puts structure.to_json | |
| # Outputs: {"child1":{"name":"test","surname":"good"},"child2":{"name":"haha","nickname":"hehe"}} |
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