redirect_to :back 加入容错，可以通过直接访问/theme/lotus指定风格不报错

git-svn-id: http://glupx.googlecode.com/svn/trunk/Reliz@77 189f022a-1064-8ae2-3e6f-c4a67275c50b

app/controllers/application_controller.rb

@@ -65,4 +65,12 @@ class ApplicationController < ActionController::Base
   #format.html  { render :error => "404" }
   #end
   #end
+  alias old_redirect_to redirect_to
+  def redirect_to(*args)
+    if args.first == :back and env['HTTP_REFERER'].blank?
+      old_redirect_to(:root)
+    else
+      old_redirect_to *args
+    end
+  end
 end
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tmp/pids/server.pid

-7668
+6596
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