Question

For some reason when I try to access the session object it seems to be returning nil.

This happens mainly in ApplicationController but has also occurred in other controllers too.

“You have a nil object when you didn’t expect it!
You might have expected an instance of ActiveRecord::Base.
The error occurred while evaluating nil.[]” – Error message received when accessing session object.

Does anyone know why this might be happening?

Answer 1

are you using rails 3 by any chance? Rails 3 defaults to cookie-based sessions – sounds like you are expecting AR based sessions …
to setup ar based sessions

#create the table
rake db:sessions:create

#rake the db
rake db:migrate

#tell you app about it in config/initializers/session_store.rb:
Rails.application.config.session_store :active_record_store