Rails4 ActionController::InvalidAuthenticityToken error

Question

I have Rails4 application running in production, and my visitors run occasionally into ActionController::InvalidAuthenticityToken error, which I cant reproduce. I get 2-4 daily

Answer 1

To answer my own question, in case someone runs into the same issue, it seems like removing csrf_meta_tag from the header fixed the problem for us. I dont know why. Could be that rails javascript responsible for setting the auth_token was interfering in some way with our javascript and caused the problem, but my gut feeling is that it had to so something with cache, either on server or client side. Anyway, after removing csrf_meta_tag it seems like we got rid of the problem. Just make sure you're using the form_tag for all your forms.