any pointers/ideas re how to over-ride the Rails behavior for some classes?
I had a quick look at how an association value is assigned & it looked a bit hairy (all this reflection stuff)...wondering if it maybe non-trivial & have gottchas? tks On 1/15/09, Maurício Linhares <[email protected]> wrote: > > There doesn't seem to be and from the object level doing: > > book.chapters << chapter > > Doesn't mean that chapter.book will be assigned, as you haven't > assigned it yourself. In most programming languages there is no way to > make a two-way association automatically. Even well know ORM tools > like Hibernate don't do this, as it's way too intrusive. > > But you can always override rails default behaviour. > > - > Maurício Linhares > http://alinhavado.wordpress.com/ (pt-br) | http://blog.codevader.com/ (en) > > > > On Wed, Jan 14, 2009 at 10:53 PM, Greg Hauptmann > <[email protected]> wrote: >> Hi, >> >> I'm noted with Rails that if one assigns one object (say Book "b") to >> another object (say Chapter "c") that the call "b.chapters" doesn't work. >> >> Question: Is there a way to ensures associations work both ways at the >> object level (i.e. prior to any DB saves)? (i.e. so in the above cases >> after I allocate a Book against a Chapter (e.g. c.book = b), that >> "b.chapters" should then work? >> >> Overall example: >> b = Book.new >> c = Chapter.new >> c.book = b >> c.book ==> works and gives b object >> b.chapters ==> DOES NOT WORK - gives [] >> >> Also: >> b = Book.new >> c = Chapter.new >> b.chapters = [c] >> b.chapters ==> works >> c.book ==> DOES NOT WORK >> >> Notes: >> * This is a specific question I have (relates to what I'm trying to >> achieve >> is a separate post "Validation spanning multiple models(tables) - how can >> this "): >> >> Thanks in advance >> >> -- >> Greg >> http://blog.gregnet.org/ >> >> >> >> > >> > > > > -- Greg http://blog.gregnet.org/ --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
