var UsernameTaken = ModalFormView.extend({ el: ".mediaDrawer.usernameTaken", action: "/auth/usernameTaken", load: function(){ var opt = JSON.parse( $("#opt").html() ) this.$("#usernameThatIsTaken").html( opt.username ) this.__super__.load.call(this) }, validate: function(){ var errors = [] var username = this.$("#usernameInput").val() if (! username.length) { errors.push("Please enter a username"); } return errors }, success: function(res){ window.location.href = "/profile" } })