MongoHQ configuration for Mongoid 3.x

mongoid.yml

development:
  sessions:
    default:
      database: mydb_development
      hosts:
        - localhost:27017
      options:
        safe: true

test:
  sessions:
    default:
      database: mydb_test
      hosts:
        - localhost:27017
      options:
        safe: true

staging:
  sessions:
    default:
      uri: <%= ENV['MONGOHQ_URL'] %>
      options:
        consistency: :eventual
        safe: true

production:
  sessions:
    default:
      <% if ENV['MONGOHQ_HOST_LIST'] %>
      database: <%= ENV['MONGOHQ_DATABASE'] %>
      username: <%= ENV['MONGOHQ_USER'] %>
      password: <%= ENV['MONGOHQ_PASSWD'] %>
      hosts:
      <% eval(ENV['MONGOHQ_HOST_LIST']).each do |host_and_port| %>
        - <%= host_and_port.join(':') %>
      <% end %>
      <% elsif ENV['MONGOHQ_URL'] %>
      uri: <%= ENV['MONGOHQ_URL'] %>
      <% end %>
      options:
        consistency: :<%= ENV['MONGODB_CONSISTENCY'] || (!$rails_rake_task ? 'eventual' : 'strong') %>
        safe: true