Method: MultiMail::Receiver::Base::ClassMethods#condense

Defined in:
lib/multi_mail/receiver/base.rb

#condense(message) ⇒ Mail::Message

Condenses a message's HTML parts to a single HTML part.

Examples:

flat = self.class.condense(message.dup)

Parameters:

  • message (Mail::Message) —

    a message with zero or more HTML parts

Returns:



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# File 'lib/multi_mail/receiver/base.rb', line 154

def condense(message)
  if message.multipart? && message.parts.any?(&:multipart?)
    # Get the message parts as a flat array.
    result = flatten(Mail.new, message.parts.dup)

    # Rebuild the message's parts.
    message.parts.clear

    # Merge non-attachments with the same content type.
    (result.parts - result.attachments).group_by(&:content_type).each do |content_type,group|
      body = group.map{|part| part.body.decoded}.join

      # Make content types match across all APIs.
      if content_type == 'text/plain; charset=us-ascii'
        # `text/plain; charset=us-ascii` is the default content type.
        content_type = 'text/plain'
      elsif content_type == 'text/html; charset=us-ascii'
        content_type = 'text/html; charset=UTF-8'
        body = body.encode('UTF-8') if body.respond_to?(:encode)
      end

      message.parts << Mail::Part.new({
        :content_type => content_type,
        :body => body,
      })
    end

    # Add attachments last.
    result.attachments.each do |part|
      message.parts << part
    end
  end

  message
end