ruby on rails - Requiring a gem inside a gem's rake task -

i'm using jeweler create gem rails 3. gem contains rake task , 1 of things wiping db, i'm using 'database_cleaner'.

i'm specifying gem dependency inside gem's gemfile

gem 'database_cleaner' 

and in rakefile

jeweler::tasks.new |gem|   ...   gem.add_dependency 'database_cleaner' end 

then inside lib i've created files my_gem.rb , tasks.rake. follows, my_gem.rb:

module mygem   class railtie < rails::railtie     rake_tasks       load 'tasks.rake'     end   end end 

and tasks.rake:

task :my_task   databasecleaner.strategy = :truncation   databasecleaner.clean end 

i installed gem (sudo rake install), created empty rails project , added gem dependency in rails' gemspec (gem 'my_gem'). when try run rake my_task error uninitialized constant databasecleaner.

i've tried adding require 'database_cleaner' inside task, raises error no such file load -- database_cleaner , gem 'database_cleaner' raises error database_cleaner not part of bundle. add gemfile..

is there way solve without adding gem 'database_cleaner' rails project's gemspec?

thanks

update (adding link source code): https://github.com/jordinl/dummy_tasks

here did make work:

https://github.com/johnmcaliley/dummy_tasks/commits/master

tasks.rake

require 'database_cleaner' require 'dummy_tasks'  namespace :db   task :dummy => :environment     databasecleaner.strategy = :truncation     databasecleaner.clean                                                  rake::task['db:seed'].invoke       end end 

there may more elegant way this, should @ least prevent having add database_cleaner gem app gemfile