Implicit user creation with Authlogic and Authlogic OAuth plugin

Question

I\'m trying to write a simple OAuth consumer app in Rails. I\'m using Authlogic for handling authentication and the Authlogic OAuth plugin to do the oauth thing.

The oau

Answer 1

Seems like I'm going to answer the question myself.

I use the following code to generate the Sign In button (in HAML):

- form_tag({:controller => "users", :action => "create"}, {:method => "post"}) do
  = oauth_register_button :value => "Sign In with Twitter"

and then I simply create the user's session object in the create method of the UsersController class, if the user already exists:

def create
  @user = User.new(params[:user])
  @user.save do |result| # LINE A
    if result
      flash[:notice] = "Account registered!"
      redirect_to some_inner_path
    else
      unless @user.oauth_token.nil?
        @user = User.find_by_oauth_token(@user.oauth_token)
        unless @user.nil?
          UserSession.create(@user)
          flash.now[:message] = "Welcome back!"
          redirect_to some_inner_path        
        else
          redirect_back_or_default root_path
        end
      else
        redirect_back_or_default root_path
      end
    end
  end
end

If the user is a first time visitor, then the user object is successfully saved in the LINE A. And if it's not and there's an oauth token available, then we try to fetch the user from the DB and log him/her in.