Hello, I have the following structure: model foo has_many :bars:, :dependent => true end model bar belongs_to :foo end In my action, when i try to save foo: def save begin f = foo.new f.a = 5 begin b = bar.new b.a = 10 f.bars << b rescue Exception => exc ... end f.save! <-- This does not happen successfully, and I end up in the exception handler with 'key not found' rescue Exception => exc ... end end Would anybody know what's going wrong here? Do I need to save f first? Thanks.
on 2006-05-23 09:32
on 2006-05-23 10:03
I'm guessing you have foreign keys defined? You won't be able to save a Bar until it's associated Foo has been saved. Also, you probably need to add the Bar to the Foo after the Foo has been saved so that the foreign key on the Bar is set correctly. When you are trying to save f, it tries to save the associated Bar objects first, which will fail because their foreign key is not set. You probably need to do something like... ActiveRecord::Base.transaction do f = Foo.create(:a => 10) f.bars.create(:a => 10) end -Jonathan.
on 2006-05-23 10:37
Do I have to start a transaction since we know bar can only be saved if f is saved. I mean, say for example f for some reason does not validate and is therefore not saved, will bar still be saved in the table? Thanks.
on 2006-05-23 11:05
If the intention of the transaction was to remove the f from the Foo.createif something went wrong then it seems like it doesn't work because i'm able to successfully insert a row for foo while bar errored out. Thanks.
on 2006-05-23 11:30
Tried the following: f = Foo.create(...) This successfully creates and stores f away in the table. Now, b = Bar.new(params[...]) f.bars << b <-- This should set the foreign key in b automatically. But I get a 'key not found' problem. I get the same problem if I do: f.bars.create(params[...]) Thanks for everything.