Authlogic + Rails3 - undefined method `Login' for nil:NilClass

Im new to Rails, and decided to start of with Rails3. After a lot of
searching ive managed to get a little bit of Authlogic working. I’m able
to register a user, login & logout.

Now, I would like to add more features, get more of authlogic working.
I’m using Railscast EP 160 as my reference.

Portions of the code found on the tutorial throw errors: Eg:

<%= link_to “Login”, login_path %>

and I get the following error message:

undefined local variable or method `login_path’ for
#<#Class:0x0000000311e8f8:0x0000000310af38>

To overcome this, ive just used a string. i.e. <%= link_to “Login”,
“/UserSessions/new” %>

Now it seems like i’ve reached an impasse. When i try to output the
current user with:

<%= @user.Login %>

I get an error that im unable to circumvent. Can you please help me?
Thanks :slight_smile: Please find below the error message, and some of the code.

undefined method `Login’ for nil:NilClass

Full Trace Reads [truncated]

activesupport (3.0.0) lib/active_support/whiny_nil.rb:48:in
method_missing' app/views/layouts/_topbar.erb:16:in_app_views_layouts__topbar_erb__4536428193941102933_40950340__3781575178692065315’
actionpack (3.0.0) lib/action_view/template.rb:135:in block in render' activesupport (3.0.0) lib/active_support/notifications.rb:54:ininstrument’
actionpack (3.0.0) lib/action_view/template.rb:127:in render' actionpack (3.0.0) lib/action_view/render/partials.rb:294:inrender_partial’
actionpack (3.0.0) lib/action_view/render/partials.rb:223:in block in render' activesupport (3.0.0) lib/active_support/notifications.rb:52:inblock
in instrument’
activesupport (3.0.0)
lib/active_support/notifications/instrumenter.rb:21:in `instrument’

Request Parameters:None

My gemfile reads:

gem “authlogic”, :git => “git://github.com/odorcicd/authlogic.git”,
:branch => “rails3”

config/routes.rb:

resources :users
resources :user_sessions
resources :ibe
match ‘:controller(/:action(/:id(.:format)))’

controllers/application_controller.rb: [the part that gets the current
user… also taken from online examples]

def current_user_session
return @current_user_session if defined?(@current_user_session)
@current_user_session = UserSession.find
end

def current_user
return @current_user if defined?(@current_user)
@current_user = current_user_session && current_user_session.record
end

models/user_session.rb:

class UserSession < Authlogic::Session::Base
include ActiveModel::Conversion
def persisted?
false
end
def to_key
new_record? ? nil : [ self.send(self.class.primary_key) ]
end
end

models/user.rb:

class User < ActiveRecord::Base
acts_as_authentic
end

controllers/users_controller.rb:

class UsersController < ApplicationController
before_filter :require_no_user, :only => [:new, :create]
before_filter :require_user, :only => [:show, :edit, :update]

def new
@user = User.new
end

def create
@user = User.new(params[:user])
if @user.save
flash[:notice] = “Account registered!”
redirect_back_or_default account_url
else
render :action => :new
end
end

def show
@user = @current_user

end

def edit
@user = @current_user

end

def update
@user = @current_user # makes our views “cleaner” and more
consistent
if @user.update_attributes(params[:user])
flash[:notice] = “Account updated!”
redirect_to account_url
else
render :action => :edit

On 21 October 2010 05:18, Sriram C. [email protected]
wrote:

<%= link_to “Login”, login_path %>

and I get the following error message:

undefined local variable or method `login_path’ for
#<#Class:0x0000000311e8f8:0x0000000310af38>

You have something missing or wrong in routes.rb. I am not into Rails
3 routing yet so not sure what. Have a look at the Rails Guide on
routing at http://guides.rubyonrails.org/

Thanks :slight_smile: Please find below the error message, and some of the code.

undefined method `Login’ for nil:NilClass

The error is saying that you have tried to call Login on a nil object
(of type NilClass, which is what nil is). The problem is therefore
that @user is nil. Either you have forgotten to set it up or the code
setting it has returned nil.

Have you looked at the Rails Guide on debugging? Using ruby-debug you
can break into your code and examine variables.

Colin

On 10-10-21 12:18 AM, Sriram C. wrote:

Im new to Rails, and decided to start of with Rails3. After a lot of
searching ive managed to get a little bit of Authlogic working. I’m able
to register a user, login& logout.

you might want to take a look at devise, its rails 3 friendly and easier
to get going with, from what i read it’s suppose to be much better

afik authlogic is not rails 3 ready? i had some early issues with a
authlogic walk-through tutorial and abandoned it for devise


Kind Regards,
Rajinder Y. | DevMentor.org | Do Good! ~ Share Freely

GNU/Linux: 2.6.35-22-generic
Kubuntu x86_64 10.10 | KDE 4.5.1
Ruby 1.9.2p0 | Rails 3.0.1

Im new to Rails, and decided to start of with Rails3. After a lot of
searching ive managed to get a little bit of Authlogic working. I’m able
to register a user, login& logout.

you might want to take a look at devise, its rails 3 friendly and easier to get
going with, from what i read it’s suppose to be much better

afik authlogic is not rails 3 ready? i had some early issues with a authlogic
walk-through tutorial and abandoned it for devise

I just set it up with Rails 3.0.1. There’s a depreciation warning about
save(false) vs save(:validate => false) but otherwise it seems to be
working without having to do anything special.

The generator isn’t available, but it’s easy to create the user sessions
class manually.

Haven’t used it much, but no big explosions yet :slight_smile:

-philip

You have something missing or wrong in routes.rb. I am not into Rails
3 routing yet so not sure what. Have a look at the Rails Guide on
routing at http://guides.rubyonrails.org/

Thanks Colin! Yes, I did a bit of searching online, after you suggested
I take a look at routes.rb. It seems that I do have a problem with the
routing part, sadly, i couldnt find a fix for the issue.

I’m trying out Devise now, per Rajinder’s suggestion.

Thanks again Colin & Rajinder :slight_smile:

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