Envio un POST usando backbone y server (python-django) no lo recibe

[gfcarbonell]

var Backbone = require('backbone');
var Pais = require('../models/pais');


class PaisCollection extends Backbone.Collection
{
initialize()
{
this.model = Pais;
this.url = "/api/paises";
this.fetch();
}
}

module.exports = PaisCollection;