Problem with undefined variable current_user

[Jen]

Hi everyone,
I'm working through the tutorial at the following link and attempting to customise/adapt the lessons for my own slightly different application.

Link:
Ruby on Rails Tutorial: Learn Rails by Example | Ruby on Rails 3 Tutorial book and screencasts | by Michael Hartl

I'm currently trying to work through chapter 10, but having some problems with the variable 'current_user' not being properly defined in the 'signed_in' method. Everything looks fine to me, but  as I am obviously missing something I'd appreciate it if someone with more experience at debugging could point me in the right direction.

I can sign in with my test users and the exception only occures when attempting to edit a profile.

Controller and model are attached.
Cheers,
Jen.

Error:

NameError in UsersController#edit

undefined local variable or method `current_user' for #<UsersController:0x9ffad80>

Rails.root: /home/resource_portal/website

Application Trace | Framework Trace | Full Trace

app/helpers/sessions_helper.rb:17:in `signed_in?'
app/controllers/users_controller.rb:91:in `authenticate'
rake-0.8.7/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/callbacks.rb:436:in `_run__1056153724__process_action__372525482__callbacks'
rake-0.8.7/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/callbacks.rb:409:in `_run_process_action_callbacks'
rake-0.8.7/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/callbacks.rb:93:in `run_callbacks'
rake-0.8.7/ruby/1.9.1/gems/actionpack-3.0.3/lib/abstract_controller/callbacks.rb:17:in `process_action'
rake-0.8.7/ruby/1.9.1/gems/actionpack-3.0.3/lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
rake-0.8.7/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/notifications.rb:52:in `block in instrument'
rake-0.8.7/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/notifications/instrumenter.rb:21:in `instrument'
rake-0.8.7/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/notifications.rb:52:in `instrument'
rake-0.8.7/ruby/1.9.1/gems/actionpack-3.0.3/lib/action_controller/metal/instrumentation.rb:29:in `process_action'
rake-0.8.7/ruby/1.9.1/gems/actionpack-3.0.3/lib/action_controller/metal/rescue.rb:17:in `process_action'
...

[Tim Shaffer]

The error message is pretty clear - You haven't defined a current_user method in your helper.

Check out Listing 9.16 in that tutorial you posted. That's where it describes the current_user method you need to add.

http://ruby.railstutorial.org/chapters/sign-in-sign-out#code:current_user_working

[Simon Baumgartner]

Are you including SessionsHelper in you ApplicationController ?

class ApplicationController < ActionController::Base
protect_from_forgery
include SessionsHelper
end

Simon

On Jun 12, 3:43 pm, Jen <jen.bot...@gmail.com> wrote:
> Hi everyone,
> I'm working through the tutorial at the following link and attempting to
> customise/adapt the lessons for my own slightly different application.
>
> Link:
> Ruby on Rails Tutorial: Learn Rails by Example | Ruby on Rails 3
> Tutorial book and screencasts | by Michael Hartl

> <http://ruby.railstutorial.org/ruby-on-rails-tutorial-book>

>
> I'm currently trying to work through chapter 10, but having some
> problems with the variable 'current_user' not being properly defined in
> the 'signed_in' method. Everything looks fine to me, but  as I am
> obviously missing something I'd appreciate it if someone with more
> experience at debugging could point me in the right direction.
>
> I can sign in with my test users and the exception only occures when
> attempting to edit a profile.
>
> Controller and model are attached.
> Cheers,
> Jen.
>
> Error:
>
>   NameError in UsersController#edit
>
> undefined local variable or method `current_user' for #<UsersController:0x9ffad80>
>
> |Rails.root: /home/resource_portal/website|
>

> Application Trace <http://localhost:3000/users/1/edit#> | Framework
> Trace <http://localhost:3000/users/1/edit#> | Full Trace
> <http://localhost:3000/users/1/edit#>

>
> |app/helpers/sessions_helper.rb:17:in `signed_in?'
> app/controllers/users_controller.rb:91:in `authenticate'
> rake-0.8.7/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/callbacks .rb:436:in `_run__1056153724__process_action__372525482__callbacks'
> rake-0.8.7/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/callbacks .rb:409:in `_run_process_action_callbacks'
> rake-0.8.7/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/callbacks .rb:93:in `run_callbacks'
> rake-0.8.7/ruby/1.9.1/gems/actionpack-3.0.3/lib/abstract_controller/callbac ks.rb:17:in `process_action'

> rake-0.8.7/ruby/1.9.1/gems/actionpack-3.0.3/lib/action_controller/metal/ins trumentation.rb:30:in `block in process_action'
> rake-0.8.7/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/notificat ions.rb:52:in `block in instrument'

> rake-0.8.7/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/notificat ions/instrumenter.rb:21:in `instrument'
> rake-0.8.7/ruby/1.9.1/gems/activesupport-3.0.3/lib/active_support/notificat ions.rb:52:in `instrument'
> rake-0.8.7/ruby/1.9.1/gems/actionpack-3.0.3/lib/action_controller/metal/ins trumentation.rb:29:in `process_action'
> rake-0.8.7/ruby/1.9.1/gems/actionpack-3.0.3/lib/action_controller/metal/res cue.rb:17:in `process_action'|
> ...
>

>  users_controller.rb
> 2KViewDownload
>
>  sessions_helper.rb
> 1KViewDownload

[Jen]

Hi,
Moved the authenticate method to the helper, after looking at the sample
app code from github. This seems to have solved the problem.

Thanks,
Jen.