I would like to load cookies everytime and everywhere in my website because when my RoR application receives and accepts an “external” HTTP request (ex: REST API), cookies are not loaded (see RFC2109). So their values are inaccessible.
Cookies are accessible only when the HTTP request is made “internally” in my application.
REST APIs are generally stateless, therefore you should avoid the use of server-side sessions or client-side cookies. If you want to indicate that a user only grabs resources belonging to them, use the Rails nested resources approach, that results in a call like:
For all books that belong to user001.
If you are looking to implement security, first you have to use HTTPS instead of HTTP. For the actual implementation you can use Basic Authentication and set the username/password in the request header or you can use something like OAuth which sets up a token for the user that they pass in with each request.