rubyonrails – beware of similarly named relationships

I recently developed a “rubyonrails”:http://www.rubyonrails.org application in which a user had a province (as part of their address) and also a collection of selected provinces. class Users belongs_to :province has_and_belongs_to_many :selected_provinces, :class_name => “Province” end I could very easily find out which provinces a user had selected and also which users had selected a specific [...]