WARNING: Can't verify CSRF token authenticity rails

Question

I am sending data from view to controller with AJAXand I got this error:

WARNING: Can\'t verify CSRF token authenticity

I think

Answer 1

1. Make sure that you have <%= csrf_meta_tag %> in your layout
2. Add a beforeSend to include the csrf-token in the ajax request to set the header. This is only required for post requests.

The code to read the csrf-token is available in the rails/jquery-ujs, so imho it is easiest to just use that, as follows:

$.ajax({
  url: url,
  method: 'post',
  beforeSend: $.rails.CSRFProtection,
  data: {
    // ...
  }
})