repo_domain_mapping.rb

# WHAT'S POSSIBLE ALREADY
class User
  include Virtus.model
  
  attribute :id
  attribute :name
  attribute :email
end

class UserMapper
  relation :users
  register_as :entity
  model User
end

class UserRepo < ROM::Repository::Base
  def [](id)
    select(:id, :name, :email).where(id: id).as(:entity).one!
  end
end

user_repo[1] # returns entity instance

# WHAT I WOULD PREFER TO HAVE INSTEAD
class UserRepo < ROM::Repository::Base
  base_model User
  
  def [](id)
    select(:id, :name, :email).where(id: id).one!
  end
end

user_repo[1] # returns entity instance