In your previous post you said this: "a business can only have one address but an address can have one or many businesses"
Your models are then set up wrong. They should be: class Business belongs_to :address class Address has_many :businesses A tip: validates_presence_of :street_name validates_presence_of :city validates_presence_of :county validates_presence_of :postcode ^ can be reduced to this: validates_presence_of :street_name, :city, :county, :postcode -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.