dynamic_attr_accessors

🛠 Dynamic Attribute Accessors

Use metaprogramming to define attribute readers and writers on the fly. This is handy for cases where attribute names come from configuration or external sources.

class Configurable
  def self.configure_with(*attrs)
    attrs.each do |attr|
      define_method(attr) { @config[attr] }
      define_method("#{attr}=") { |val| @config[attr] = val }
    end
  end

  def initialize
    @config = {}
  end
end

class AppSettings < Configurable
  configure_with :theme, :timeout, :api_key
end

settings = AppSettings.new
settings.theme = 'dark'
puts settings.theme  # => "dark"