Extend a module with AutoRake for convenient rake task calling.

auto_rake.rb

module AutoRake
  require 'rake'
  Rails.application.load_tasks if Rake::Task.tasks.empty?

  def const_missing(const)
    mod = Module.new
    mod.extend AutoRake
    const_set(const, mod)
  end

  def invoke
    task.invoke
  end

  def task(suffix=nil)
    Rake::Task[task_name(suffix)]
  end

  def task_name(suffix=nil)
    prefix = name.gsub('::', ':').downcase
    suffix ? "#{prefix}:#{suffix.downcase}" : prefix
  end
end

## Example Usage
module DB
  extend AutoRake
end

DB::Clean.invoke
DB::Seed.invoke