Rails: How Does csrf_meta_tag Work?

Question

I\'m a PHP developer learning Ruby on Rails by reading Michael Hartl\'s tutorial. Here is a quote from the book, referring to csrf_meta_tag:

Answer 1

csrf_meta_tags are indications for ajax requests to use these as one of the form parameters to make a request to the server. Rails expects the csrf as part of your form body (params) to process your requests. Using these meta tags you can construct the form body or the csrf header to suit your needs. I hope this answer helps your question.