A very quick post so that if you were ever to get this error, you'll know how to fix it up.
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An odd titled name for something that I had to remember how to do today. If you need to sort something by the number of its has_many object...
Had to go look this up today as we are using more named_scopes at work now, although couldn't off the top of my head remember how to get a named_scope to take an argument nicely.
We have all seen the majority of different ways of displaying feedback to users via Ajax calls, however one I hadn't seen before caught my eye today.