method to extract parts from a rails Mail::Message

gistfile1.rb

def parts(email)
  splits = email.encoded.split(/(\r\n)*----==_mimepart_[a-zA-Z0-9_]+(\r\n)*/)
  parts = {header: splits[0]}
  splits[1..-2].each do |part|
    headers, body = part.split(/\r\n\r\n/, 2)
    if(m = /Content-Type: ([^; ]+);?\s/.match(headers))
      type = m[1]
      parts[type] = OpenStruct.new(headers:headers, body:body)
    end
  end
  return parts
end


#example of using this within rspec
it "should have content" do
  email = ActionMailer::Base.deliveries.last
  email.should_not be_nil
  parts = parts(email)
  parts.keys.should include('text/html')
  parts.keys.should include('text/plain')
  parts["text/plain"].body.should match(something)
  parts["text/html"].body.should match(something_else)
end