JSON to Ruby Converter

Generate plain Ruby models from sample JSON when your Rails app or Ruby script wants readable PORO transport classes instead of unstructured hashes.

How to use

  1. Paste a representative JSON payload that matches the response, event, or config shape your Ruby code actually uses.
  2. Review the generated classes, `attr_accessor` fields, and initializer arguments for nested content and arrays.
  3. Copy the output into your Rails app or Ruby service and refine module names, coercion, or serializer glue as needed.

Benefits

  • Produces plain Ruby model scaffolding that is easier to maintain than scattered hash access.
  • Keeps nested payload contracts readable for Rails services, jobs, and API clients.
  • Works well as a lightweight DTO layer before richer domain behavior is added.

Best use cases

  • Rails services that want PORO transport models before ActiveModel or domain-specific layering.
  • Ruby scripts and background jobs that repeatedly parse structured JSON.
  • Teams replacing ad hoc hashes with explicit classes for payload handling and test fixtures.

Ruby model tips

  • Treat generated Ruby classes as PORO transport models and add validations or coercion separately if needed.
  • Review keyword arguments for optional fields when real payloads are sparser than the sample.
  • Keep generated classes in a dedicated DTO or serializers folder when they should stay separate from business logic.

Sample JSON

{
  "id": 101,
  "name": "Ada Lovelace",
  "active": true,
  "roles": ["admin", "editor"],
  "profile": {
    "email": "ada@example.com",
    "score": 9.8
  }
}

Sample Ruby output

class UserModel
  attr_accessor :id, :name, :active, :roles

  def initialize(id:, name:, active:, roles:)
    @id = id
    @name = name
    @active = active
    @roles = roles
  end
end

FAQ

Why use the Ruby route instead of the PHP or Elixir routes?

Choose the Ruby route when your target stack is Ruby and you want plain PORO classes with `attr_accessor` and initializer arguments rather than PHP DTO properties or Elixir struct modules.

Does the Ruby route scaffold nested arrays and child objects?

Yes. Nested objects become additional Ruby classes, and repeated values are inferred from the sample JSON payload so the resulting models stay structured.