On 15 Jan 2009, at 02:23, Greg Hauptmann wrote:
There is a plugin ( http://github.com/h-lame/parental_control/tree/master ) which implements a solution to this. There is a proposal to integrate it (or a variant of it) into core.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?
Fred
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'tassigned it yourself. In most programming languages there is no way tomake 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 Linhareshttp://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 casesafter 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 achieveis a separate post "Validation spanning multiple models(tables) - how canthis "): 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 -~----------~----~----~----~------~----~------~--~---
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