beerkg

Features:

- convert JSON, XML or YAML into Ruby data model

- serialize data model to JSON, XML or YAML

- generate JSON and XML Schema from Ruby models

- compile JSON Schema into Ruby models (compiling XML Schema is a work in progress)

A quick example so you can get a feel of it:

  require 'shale'

  class Address < Shale::Mapper
    attribute :street, Shale::Type::String
    attribute :city, Shale::Type::String
  end

  class Person < Shale::Mapper
    attribute :first_name, Shale::Type::String
    attribute :last_name, Shale::Type::String
    attribute :address, Address
  end

  # parse data and convert it into Ruby data model
  person = Person.from_json(<<~JSON) # or .from_xml / .from_yaml
  {
    "first_name": "John",
    "last_name": "Doe",
    "address": {
      "street": "Oxford Street",
      "city": "London"
    }
  }
  JSON

  # It will give you
  # =>
  #  #<Person:0xa0a4
  #    @address=#<Address:0xa0a6
  #      @city="London",
  #      @street="Oxford Street",
  #      @zip="E1 6AN">,
  #    @age=50,
  #    @first_name="John",
  #    @hobbies=["Singing", "Dancing"],
  #    @last_name="Doe",
  #    @married=false>

  # serialize Ruby data model to JSON
  Person.new(
    first_name: 'John',
    last_name: 'Doe',
    address: Address.new(street: 'Oxford Street', city: 'London')
  ).to_json # or .to_xml / .to_yaml