dojo/request PUT method dosn't work

I have a web app using Python Django and Dojo framework. I wanna send a PUT request from Dojo (using dojo/request) to server Django but when server receives a request, the data within are empty and validate Invalid. BUT when I change method from PUT to POST, it's work correctly.

Here is my code:

_save: function(data){
        var idForm = "editForm" + this.id;
        var value = dijit.byId(idForm).get('value');
        console.log(value);
        request.put("/api/guestbook/"+this.bookName+"/greeting/"+this.id+"/", {
            data: {
                book_name: this.bookName,
                message: value.message
            },
            headers: { "X-CSRFToken": _cookie('csrftoken') }
        }).then(lang.hitch(this, function(text){

        }));
    },

And in Django:

def put(self, request, *args, **kwargs):
    form = self.get_form(self.form_class)
    logging.warning(form)
    logging.warning(request.PUT)
    if form.is_valid():
        logging.warning("This form is VALID")
    else:
        logging.warning("This form is INVALID!!!")

Anyone can help me? Thanks for help!