Why am I getting the error "db_name must be a string or symbol"?

Why am I getting the error "db_name must be a string or symbol"?

mongodb sinatra mongoid yaml

mongodb

Using Sinatra and MongoDB - what's the recommended way to "keep alive" the mongodb connection between http requests?

ruby mongodb sinatra

mongodb

What are the best practices to secure a Sinatra application?

ruby mongodb security sinatra database

mongodb

Odd behavior in Mongoid: after_add callback fired when accessing referenced model

ruby ruby-on-rails-3 mongodb sinatra mongoid

mongodb