dynamic_route_macros

✨ DRY Route Macros with Metaprogramming

For large APIs or admin panels with repeated patterns (e.g., versioned namespaces or nested admin resources), define your own route macros to keep routes.rb clean and DRY. You can extend the ActionDispatch::Routing::Mapper to add custom methods, injecting common scopes, constraints, or defaults.

# config/initializers/route_macros.rb
module ActionDispatch::Routing
  class Mapper
    def versioned_api(version, **options)
      namespace :api do
        namespace "v#{version}" do
          constraints ApiVersionConstraint.new(version: version, default: options[:default]) do
            yield
          end
        end
      end
    end
  end
end

# config/routes.rb
Rails.application.routes.draw do
  versioned_api(1, default: true) do
    resources :posts
  end

  versioned_api(2) do
    resources :posts, only: [:index, :show]
  end
end