Rails - Sep 2005 - Problems with has_one - belongs_to relations

Some small problems. I''m still newbe

I had set up valid models. user has_one profile, 
and profile belongs_to user.

Saving in db works fine, but I can''t figured out why in register.rhtml 
<%= error_message_on("profile", "pseudo") %>
doesn''t work,
it shows NoMethodError.

And all validates_* doesn''t work in profile.rb model.


def create
     @user = User.new(params[:user])
     @user.profile = Profile.new(@params[:user])
    if  @user.save      
    end
end


Is''t a proper way to insert relational data in 2 tables ?

Any help will be apreciated.


Best greatings to Everyone doing Everyting in Ruby On Rails