v1.3.0

Added

• Nested structures will reuse type and key transformations from the enclosing struct (@flash-gordon)

  class User < Dry::Struct
    transform_keys(&:to_sym)
  
    attribute :name, Types::String
    attribute :address do
      # this struct will inherit transform_keys(&:to_sym)
      attribute :city, Types::String
    end
  
    # nested struct will _not_ transform keys because a parent
    # struct is given
    attribute :contacts, Dry::Struct do
      attribute :email, Types::String
    end
  end

• Dry::Struct::Constructor finally acts like a fully-featured type (@flash-gordon)

• Dry::Struct.abstract declares a struct class as abstract. An abstract class is used as a default superclass for nested structs (@flash-gordon)

• Struct.to_ast and struct compiler (@flash-gordon)

• Struct composition with Dry::Struct.attributes_from. It's more flexible than inheritance (@waiting-for-dev + @flash-gordon)

  class Address < Dry::Struct
    attribute :city, Types::String
    attribute :zipcode, Types::String
  end
  
  class Buyer < Dry::Struct
    attribute :name, Types::String
    attributes_from Address
  end
  
  class Seller < Dry::Struct
    attribute :name, Types::String
    attribute :email, Types::String
    attributes_from Address
  end

Changed

• [internal] metadata is now stored inside schema (@flash-gordon)

Compare v1.2.0...v1.3.0