method

set_content_type

v4.2.1 - Show latest stable - 0 notes - Class: ActionMailer::Base

set_content_type(m, user_content_type, class_default) protected

Used by #mail to set the content type of the message.

It will use the given user_content_type, or multipart if the mail message has any attachments. If the attachments are inline, the content type will be “multipart/related”, otherwise “multipart/mixed”.

If there is no content type passed in via headers, and there are no attachments, or the message is multipart, then the default content type is used.

Show source

# File actionmailer/lib/action_mailer/base.rb, line 856
    def set_content_type(m, user_content_type, class_default)
      params = m.content_type_parameters || {}
      case
      when user_content_type.present?
        user_content_type
      when m.has_attachments?
        if m.attachments.detect { |a| a.inline? }
          ["multipart", "related", params]
        else
          ["multipart", "mixed", params]
        end
      when m.multipart?
        ["multipart", "alternative", params]
      else
        m.content_type || class_default
      end
    end

set_content_type

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