Nested attributes of the structure about dry-struct HOT 7 CLOSED

gem 'dry-types', '~> 0.8.1'
require 'dry/types'

module Types
  include Dry::Types.module

  module Coercible
    # these can be anything I just defined these so I could make your example work
    Email = Types::String
    Phone = Types::String
  end
end

class Preference < Dry::Types::Struct
  attribute :food, Types::Array
end

class Profile < Dry::Types::Struct
  attribute :email, Types::Coercible::Email # defined somewhere else
  attribute :phone, Types::Coercible::Phone # ^^

  attribute :preferences, Preference
end

class User < Dry::Types::Struct
  attribute :name, Types::Strict::String
  attribute :profile, Profile
end

user = User.new(
  name: 'Joe',
  profile: {
    email: '[email protected]',
    phone: '1(234)567-8900',
    preferences: {
      food: ['ice-cream']
    }
  }
)

user # => #<User name="Joe" profile=#<Profile email="[email protected]" phone="1(234)567-8900" preferences=#<Preference food=["ice-cream"]>>>

gem 'dry-types', '~> 0.8.1'
require 'dry/types'

module Types
  include Dry::Types.module

  module Coercible
    Email = Types::String
    Phone = Types::String
  end
end

class User < Dry::Types::Struct
  class Profile < Dry::Types::Struct
    class Preference < Dry::Types::Struct
      attribute :food, Types::Array
    end
    private_constant(:Preference)

    attribute :email, Types::Coercible::Email # defined somewhere else
    attribute :phone, Types::Coercible::Phone # ^^

    attribute :preferences, Preference
  end
  private_constant(:Profile)

  attribute :name, Types::Strict::String
  attribute :profile, Profile
end

user = User.new(
  name: 'Joe',
  profile: {
    email: '[email protected]',
    phone: '1(234)567-8900',
    preferences: {
      food: ['ice-cream']
    }
  }
)

user # => #<User name="Joe" profile=#<User::Profile email="[email protected]" phone="1(234)567-8900" preferences=#<User::Profile::Preference food=["ice-cream"]>>>