Changed mailer generator to not use instance variables.

Signed-off-by: Joshua Peek <josh@joshpeek.com>

railties/lib/rails_generator/generators/components/mailer/templates/mailer.rb

@@ -2,12 +2,12 @@ class <%= class_name %> < ActionMailer::Base
 <% for  action in actions -%>
 
   def <%= action %>(sent_at = Time.now)
-    @subject    = '<%= class_name %>#<%= action %>'
-    @body       = {}
-    @recipients = ''
-    @from       = ''
-    @sent_on    = sent_at
-    @headers    = {}
+    subject    '<%= class_name %>#<%= action %>'
+    recipients ''
+    from       ''
+    sent_on    sent_at
+    
+    body       :action => '<%= action %>'
   end
 <% end  -%>
 end

railties/test/generators/rails_mailer_generator_test.rb

@@ -8,12 +8,12 @@ def test_generates_mailer
     assert_generated_model_for :notifier, 'ActionMailer::Base' do |model|
       assert_has_method model, :reset_password do |name, body|
         assert_equal [
-            "@subject    = 'Notifier#reset_password'",
-            "@body       = {}",
-            "@recipients = ''",
-            "@from       = ''",
-            "@sent_on    = sent_at",
-            "@headers    = {}"
+            "subject    'Notifier#reset_password'",
+            "recipients ''",
+            "from       ''",
+            "sent_on    sent_at",
+            "",
+            "body       :action => 'reset_password'"
           ],
           body.split("\n").map{|line| line.sub(' '*4, '') }
       end