I have installed restful_authentication and authentication plugin
( http://code.google.com/p/rails-authorization-plugin/ ) Login, signup
and activation is working, but I find it very difficult to take it
futher from here.

How do I check if a user is logged in and redirect to /login if not?
(for all actions in my messages controller)

The authorization plugin has added a roles table, does anyone have an
example on how to use such a role? Should I add thoose roles from
mysql or the console?

What I am trying to do is very basic - the logged in user should only
CRUD his/her own records /objects. How should that be implemented?
This is an example:

Code Ruby:
  def edit 
    @blog = Blog.find(params[:id]) 
  def update 
    @blog = Blog.find(params[:id]) 
    if @blog.update_attributes(params[:blog]) 
      redirect_to :controller => 'blogs', :action => 'show', :id => 
      render :action => 'edit' 

Hope that any of you can help me out here. I am a bit stuck and been
working on this all weekend.

Best regards.
Asbjørn Morell.