Many thanks Michael, it solved the problem, and thanks for the extra
advice I need it! as where I am based (Indonesia) no one teaches
rails.

On Feb 15, 7:39 pm, Michael Pavling <pavl...@gmail.com> wrote:
> On 15 February 2010 10:46, David Krett <dbkr...@gmail.com> wrote:
>
>
>
> > I am a ruby on Rails Novice and I am having an extremely frustrating 
> > problem - not sure whether acts_as_tree plug in is causing this or not (or 
> > me lacking a fundamental misunderstanding of rails)
>
> > Everything works when I test the above code in the Rails console however 
> > when running the server the children are failing to have the 
> > commission_rate variable updated.
> > Would appreciate any help anyone can provide me.
>
> You're not saving the child after you update it's value
>
>     for child in @children do
>       child.commissions_rate = @rate
>       child.save
>     end
>
> or
>
>     for child in @children do
>       child.update_attribute(:commissions_rate, �...@rate)
>     end
>
>  .update_attribute automatically saves, check the Rails API docs for
> more info on using this method.
>
> PS You're using a lot of instance variables there, which seem like
> there would be better scoped as local variables (ie drop the @ from
> the variables unless you need them to be accessible on an instance of
> the object - @destination is probably the only legitimate instance
> variable)

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