factory_girl

https://github.com/thoughtbot/factory_girl

Ruby

A library for setting up Ruby objects as test data.

Mail::AttachmentsList#[]

Returns the attachment by filename or at index.

mail.attachments['test.png'] = File.read('test.png')
mail.attachments['test.jpg'] = File.read('test.jpg')

mail.attachments['test.png'].filename #=> 'test.png'
mail.attachments[1].filename          #=> 'test.jpg'

Source | Google | Stack overflow

Edit

git clone [email protected]:thoughtbot/factory_girl.git
cd factory_girl
open

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Mail--AttachmentsList----for-pr

# Commit to git

git add git commit -m "better docs for Mail::AttachmentsList#[]"

# 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--AttachmentsList----for-pr

hub pull-request

# Celebrate!