Attaching PDF's to Emails in Rails 2 - ruby-on-rails

Question

I am sending an email in my Rails 2 app and after a bit of hacking and learning about emails in Rails it now works fine.
Now I am just trying to add an attachment which in theory should probably be straightforward but I seem to be having issues with it.
I am using mailcatcher to preview the emails in the development environment and I can see the attachment headers in the email source but nothing is shown in mailcatcher (docs say it supports attachments)
emailer.rb
class Emailer < ActionMailer::Base
def quotation_notification(q)
#recipients = q.recipient_email
#from = q.partner_name + "<#{q.partner_email}>"
#subject = "New Quotation from " + q.partner_name
#sent_on = Time.now
#quote_id = q.quote_id
#customer_id = q.customer_id
#customer_name = q.customer_name
#recipient_email = q.recipient_email
#partner_name = q.partner_name
#partner_email = q.partner_email
#partner_ref = q.partner_ref
#version_no = q.version_no
#line_items = q.line_items
#quotation_date = q.quotation_date
content_type "multipart/alternative"
part "text/html" do |p|
p.body = render_message("quotation_notification.text.html.rhtml", :message => q)
end
attachment :content_type => "application/pdf",
:body => File.read(RAILS_ROOT + '/pdfs/' + q.quote_id + '.pdf')
#body[:q] = q
end
end
The email is being sent in a controller like so
q = QuotationEmail.new(quote_id, customer_id, customer_name, recipient_email, partner_name, partner_email, partner_ref, version_no, line_items, quotation_date)
# send email
Emailer.deliver_quotation_notification(q)
Just for completeness, my view is app/views/emailer/quotation_notification.text.html.rhtml
quotation_email.rb
class QuotationEmail
attr_accessor :quote_id, :customer_id, :customer_name, :recipient_email, :partner_name, :partner_email, :partner_ref, :version_no, :line_items, :quotation_date
def initialize(quote_id, customer_id, customer_name, recipient_email, partner_name, partner_email, partner_ref, version_no, line_items, quotation_date)
#quote_id = quote_id
#customer_id = customer_id
#customer_name = customer_name
#recipient_email = recipient_email
#partner_name = partner_name
#partner_email = partner_email
#partner_ref = partner_ref
#version_no = version_no
#line_items = line_items
#quotation_date = quotation_date
end
end
In the source of the email, after the closing html tag I can see
--mimepart_522da7e7e5959_a0885cd9314396
Content-Type: application/pdf
Content-Transfer-Encoding: Base64
Content-Disposition: attachment
*base 64 encoded stuff*
--mimepart_522da7e7e5959_a0885cd9314396--
If I have done anything bonkers then it is because I haven't sent any emails in Rails yet so still figuring things out.

Answer 1

I can only assume this was a problem with mailcatcher, by setting up development emails to be sent to a gmail account, the emails were sent correctly with attachments.
environments/development.rb
config.action_mailer.raise_delivery_errors = true
config.action_mailer.perform_deliveries = true
config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = {
:address => "smtp.gmail.com",
:port => 587,
:domain => "domain.co.uk",
:user_name => "gmailaddress#domain.co.uk",
:password => "accountpassword",
:authentication => :plain,
:enable_starttls_auto => true #This line is must to ensure the tls for Gmail
}
I used an existing app email address hosted on gmail, so not strictly an username#gmail.com / username#googlemail.com but I would think that those addresses would also work with the above.