I would do: Passengers belong_to Car Car has_many Passengers Car has_one Driver, :class => Passenger
Dieter Lunn http://www.coder2000.ca On Mon, May 10, 2010 at 7:46 AM, John Sikorski <[email protected]> wrote: > Let's say I have a car table that has many passengers so obviously the > passenger table will have a foreign key to car. The Car model has_many > Passengers. A car can have one and only one driver. What's the best > way to model this relationship? > > Hand coded get and set driver methods in the car class with one of the > following keys. > 1) a flag in the passenger table noting the passenger as driver > 2) a passenger foreign key in car to note driver > > > Extend passenger to make a Driver model and do either: > > 3) Car belongs_to Driver > > 4) Car has_one Driver > > > Or something else? > > Thanks! > -- > 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 [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > > -- 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 [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
