Midnight Oil

I was getting this error today in my Mongrel server logs. It was strange, because I didn’t think we were doing anything with Javascript.

It took me about an hour to track down, but I eventually found it. In our main layout, we had:

<%= javascript_include_tag 'defaults' %>

and it should have been

<%= javascript_include_tag :defaults %>

I guess RoR picks up on the symbol vs string and does something special.

I hope this helps somebody.