MongoDB error with Mongoid, Heroku, Device, MongoHQ and Rails - ruby-on-rails-3

Question

I'm working on a simple app that is currently deployed to heroku now - it is using mongoid, device and can create user login very easily in localhost, but not in production at heroku. You can try to create an account, and it gives an error after submit.
I think my mongoid.yml for production needs to change, but I have no idea how.
My heroku config has the following:
=== Config Vars for bookfoo
DATABASE_URL: postgres://jeibucpexp:bVZzGaGPUeGylwmA7dyE#ec2-107-20-186-97.compute-1.amazonaws.com/jeibucpexp
GEM_PATH: vendor/bundle/ruby/1.9.1
LANG: en_US.UTF-8
MONGOHQ_URL: mongodb://heroku:14bc6d476e6449c952d6350b07e89643#alex.mongohq.com:10065/app6153931
MONGOLAB_URI: mongodb://heroku_app6153931:og03dk0hdrj7r8lsit51k6ah9n#ds037097-a.mongolab.com:37097/heroku_app6153931
PATH: bin:vendor/bundle/ruby/1.9.1/bin:/usr/local/bin:/usr/bin:/bin
RACK_ENV: production
RAILS_ENV: production
SHARED_DATABASE_URL: postgres://jeibucpexp:bVZzGaGPUeGylwmA7dyE#ec2-107-20-186-97.compute-1.amazonaws.com/jeibucpexp
mongoid.yml has the following as suggested in heroku:
development:
sessions:
default:
database: bookfoo_app_development
hosts:
- localhost:27017
options:
consistency: :strong
options:
test:
sessions:
default:
database: bookfoo_app_test
hosts:
- localhost:27017
options:
consistency: :strong
production:
sessions:
default:
uri: <%= ENV['MONGOHQ_URL'] %>
options:
skip_version_check: true
safe: true
my gemfile has the following:
source 'https://rubygems.org'
gem 'rails', '3.2.3'
group :development, :test do
gem 'sqlite3'
gem 'rspec-rails'
end
group :test do
gem 'database_cleaner'
gem 'mongoid-rspec'
gem 'factory_girl_rails'
gem 'email_spec'
gem 'capybara'
gem 'launchy'
end
group :production do
gem 'thin'
end
group :assets do
gem 'sass-rails', '~> 3.2.3'
gem 'coffee-rails', '~> 3.2.1'
gem 'uglifier', '>= 1.0.3'
end
gem 'jquery-rails'
gem "mongoid", :git => "git://github.com/mongoid/mongoid.git"
gem "bson_ext"
gem "devise"
after git push heroku master it gives me the following hints:
There is a configuration error with the current mongoid.yml.
Problem:
No database provided for session configuration: :options.
Summary:
Each session configuration must provide a database so Mongoid knows where the default database to persist to. What was provided was: {"skip_version_check"=>true, "safe"=>true}.
Resolution:
If configuring via a mongoid.yml, ensure that within your :options section a :database value for the session's default database is defined.
Example:
\_\_development:
\_\_\_\_sessions:
\_\_\_\_\_\_options:
\_\_\_\_\_\_\_\_database: my_app_db
\_\_\_\_\_\_\_\_hosts:
\_\_\_\_\_\_\_\_\_\_- localhost:27017

Answer 1

mongoid.yml should be so (my indentation was wrong):
production:
sessions:
default:
uri: <%= ENV['MONGOHQ_URL'] %>
options:
skip_version_check: true
safe: true