create object after before_filter :authenticate_user!


I use devise and cancan

my model

class PostsController < ApplicationController

before_filter :authenticate_user!, only: [:create, :update, :destroy]


so an unauthentificate user can access new post form. Now when unauthentificate user submit new or edit forms, he is redirected to login form. But when he logs in, his post is not save in database. Is there anythings to do such as callback if I want the post to be saved ?