I'm building a simple app in ruby using the Sinatra framework. It's mainly "get" based - most requests will be for listing data. However there are a couple of key screens in the app that will collect user input. I want to ensure the app is as safe as I can make it, and currently, trying to find how to implement the kind of authenticity tokens that you get in a Rails form? Where I've got to: Well,
![How can I make Sinatra use CSRF Authenticity tokens?](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)