you have to add :dependent => :destroy in the association you B table has_many A
then the B model will looks like has_many :A , :dependent => :destroy so when you destroy an object of B it will automatically delete all the As that was associated with that B On Jul 23, 4:09 pm, Matt Jones <[email protected]> wrote: > Your example doesn't make much sense from here, but you'll probably > want to look into the various :dependent options to has_many. > > --Matt Jones > > On Jul 22, 10:44 pm, Me <[email protected]> wrote: > > > I have a join table: > > > sitedata > > belongs_to :tb1 > > belongs_to tb2 > > > has_many :tb3 > > > When I add a relationship in the join table I then add data to the tb3 > > table and that populates the FK in tb3 with the id of the join table. > > no problems there. > > > when I delete the row in the join table the data stays in the tb3 > > table. how do I get the tb3 data to delete? > > > Is not has_many supposed to delete the data on the other end when the > > primary table no longer has a reference? > > > If I go into the DB and make the FK a constraint with a delete on > > cascade it works when the data in the join table is deleted. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
