Today I made a first attempt to make use of ruby mailer. A volunteer fills out a form and the information is then sent to an administrator.
I generated a mailer called notifier and added the following:
class Notifier < ActionMailer::Base def volunteer_signup(volunteer, sent_at = Time.now) @subject = 'A new volunteer has signed up' @body = { :title => volunteer.title, :first_name => volunteer.first_name, :last_name => volunteer.last_name, :id => volunteer.id } @recipients = 'dsarosi@crossroadsint.org' @from = 'CrossroadsPublicWebiste@crossroadsint.org' @sent_on = sent_at @headers = {} @content_type = 'text/html' end end
Then I generated a view called volunteer_signup.html.erb
Dear xxx,
<%= @title %><%= @first_name %> <%= @last_name %> has signed up as a new volunteer.
To see his/her information copy the text below into your browser's address bar. http://localhost:3000/volunteers/<%= @id %>
I added the following line to my volunteer_controller create method:
Notifier.deliver_volunteer_signup(@volunteer)
I ran the code and got the following error:
mailer sub type missing: "html"
I ran the debugger and noticed the following;
At /usr/lib/ruby/gems/1.8/gems/actionmailer-2.0.1/lib/action_mailer/ part.rb:59:in 'to_mail'
59: real_content_type, ctype_attrs = parse_content_type(defaults)
This method takes the content_type of the message "text/html" and splits the string so that variable real_content_type is "html". But then on line 82 it calls;
82: part.set_content_type(real_content_type, nil, ctype_attrs)
def set_content_type( str, sub = nil, param = nil ) if sub main, sub = str, sub else main, sub = str.split(%r</>, 2) raise ArgumentError, "sub type missing: #{str.inspect}" unless sub end if h = @header['content-type'] h.main_type = main h.sub_type = sub h.params.clear else store 'Content-Type', "#{main}/#{sub}" end @header['content-type'].params.replace param if param str end
As you can str contains "html" as real_content_type was passed in, sub is nil. It then tries to split this string again, which has been split before. So str will be split into "html" and nil. Since sub is nil, it will raise the error. If I leave @content_type blank, the same error is raised.
Could this be a bug in mailer? If you change str or real_content_type to "text/html" in the debugger, the code will run without errors. I'm new to Ruby on rails, so if this is a bug, please let me know where I should submit it.
