carrierwave

https://github.com/carrierwaveuploader/carrierwave

Ruby

Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks

Mail::Body#sort_parts!

Allows you to sort the parts according to the default sort order, or the sort order you
set with :set_sort_order.

sort_parts! is also called from :encode, so there is no need for you to call this explicitly

Source | Google | Stack overflow

Edit

git clone [email protected]:carrierwaveuploader/carrierwave.git

cd carrierwave

open

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Mail--Body-sort_parts--for-pr

# Commit to git

git add git commit -m "better docs for Mail::Body#sort_parts!"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Mail--Body-sort_parts--for-pr

hub pull-request

# Celebrate!