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uninitialized constant [User]Observer

#57

So I installed the restful_authenticaiton plugin.

$ script/plugin install restful_authentication

Generated files using "Students" as my model (instead of the often-used "Users"). Note that I've added the --include-activation flag.

$ ./script/generate authenticated students sessions --include-activation

And after editing my environment.rb with the line:
config.active_record.observers = :student_observer # or whatever you

I get the following output when trying to run script/server

$ ./script/server => Booting WEBrick => Rails 2.3.4 application starting on http://0.0.0.0:3000 /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:443:in load_missing_constant': uninitialized constant StudentObserver (NameError)

from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:80:in `const_missing'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:92:in `const_missing'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/inflector.rb:361:in `constantize'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/inflector.rb:360:in `each'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/inflector.rb:360:in `constantize'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/core_ext/string/inflections.rb:162:in `constantize'
from /Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/observer.rb:38:in `instantiate_observers'
from /Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/observer.rb:36:in `each'
from /Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/observer.rb:36:in `instantiate_observers'
from /Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/dispatcher.rb:15:in `define_dispatcher_callbacks'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/callbacks.rb:182:in `call'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/callbacks.rb:182:in `evaluate_method'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/callbacks.rb:166:in `call'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/callbacks.rb:90:in `run'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/callbacks.rb:90:in `each'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/callbacks.rb:90:in `send'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/callbacks.rb:90:in `run'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/callbacks.rb:276:in `run_callbacks'
from /Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/dispatcher.rb:51:in `send'
from /Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/dispatcher.rb:51:in `run_prepare_callbacks'
from /Library/Ruby/Gems/1.8/gems/rails-2.3.4/lib/initializer.rb:631:in `prepare_dispatcher'
from /Library/Ruby/Gems/1.8/gems/rails-2.3.4/lib/initializer.rb:185:in `process'
from /Library/Ruby/Gems/1.8/gems/rails-2.3.4/lib/initializer.rb:113:in `send'
from /Library/Ruby/Gems/1.8/gems/rails-2.3.4/lib/initializer.rb:113:in `run'
from /Users/aarz/Sites/50forthefuture/branches/heroku3/config/environment.rb:9
from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:156:in `require'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:521:in `new_constants_in'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/dependencies.rb:156:in `require'
from /Library/Ruby/Gems/1.8/gems/rails-2.3.4/lib/commands/server.rb:84
from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require'
from ./script/server:3

What step might I have missed?

Reported by Al Arzaga · November 8th, 2009 @ 07:49 PM

State: new
Milestone: none
Assigned to: mrflip mrflip

Activity

  1. Al Arzaga
    Al Arzaga

    Sorry, I forgot to add that I'm running Rails 2.3.4 on ruby 1.8.7.

    November 8th, 2009 @ 07:50 PM

  2. Susanna Schroeder
    Susanna Schroeder
    • Tag set to aasm, restful_authentication

    I am having the same problem too.

    I used --include-activation, --aasm, and --rspec flags.

    Are the instructions incorrect? THe

    config.active_record.observers = :user_observer

    line seems to be for the --stateful option, which is no longer used (replaced by aasm)

    Could it be that we should not be including the line in environment.rb anymore?

    There certainly is no user_observer.rb in the models directory. After following the instructions.

    Anyone?

    December 16th, 2009 @ 04:13 PM

  3. hhcv
    hhcv

    I encountered this same problem when editing my environment.rb file to register an observer before having created it.

    I simply commented it out, created the observer/installed the plugin, and restarted the server.

    February 18th, 2010 @ 05:13 PM

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