image attachment in mail with rails3
===

Here i need to attach one image with mail, the passing image like this
**imageurl** = "https://chart.googleapis.com/chart?chs=200x200&cht=qr&chl=%22hai%22&choe=UTF-8"

    class UserMailer < ActionMailer::Base
     default :from => "mail@example.com"
  
     def welcome_email(**imageurl**,bname,mailid)
      **attachments['image.png'] = File.read(imageURL)**
      mail(:to => mailid,
      :subject => "Code for "+bname+"",
      :body => "code for bname" )
      end
     end
    end

here i got some attachment error. Have any changes in this attachment?  

thanks