rails - “WARNING: Can't verify CSRF token authenticity” for json devise requests

Question

How can I retrieve the CSRF token to pass with a JSON request?

I know that for security reasons Rails is checking the CSRF token on all the request types (including

Answer 1

What's worrying is that in Rails 3.2.3 we now get the CSRF warning in production.log but the post does not fail! I want it to fail as it protects me from attacks. And you can add the csrf token with jquery before filter btw:

http://jasoncodes.com/posts/rails-csrf-vulnerability