Rails - Mar 2006 - order.products << product w/out persisting

Hi,
I have a one-to-many relationship.  I want to be able to add objects
to the collection w/out persisting them.  How do I do this?

The only thing I can''t think of is to use a transaction and roll it
back.

In other words - I want to do this:

o = Order.find(1)
p = Product.find(1)
o.products << p  # but don''t persist this

I assume I''m just missing something obvious here.  Any ideas?
Thanks,
Ben

Hm, maybe clone/dup the object?

On 3/8/06, Ben Anderson <benanderson.us@gmail.com>
wrote:
> Hi,
> I have a one-to-many relationship.  I want to be able to add objects
> to the collection w/out persisting them.  How do I do this?
>
> The only thing I can''t think of is to use a transaction and roll
it back.
>
> In other words - I want to do this:
>
> o = Order.find(1)
> p = Product.find(1)
> o.products << p  # but don''t persist this
>
> I assume I''m just missing something obvious here.  Any ideas?
> Thanks,
> Ben
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>

Ben Anderson wrote:
> I have a one-to-many relationship.  I want to be able to add objects
> to the collection w/out persisting them.  How do I do this?
> 
> The only thing I can''t think of is to use a transaction and roll
it back.
> 
> In other words - I want to do this:
> 
> o = Order.find(1)
> p = Product.find(1)
> o.products << p  # but don''t persist this
o.products.to_ary << p

-- 
We develop, watch us RoR, in numbers too big to ignore.

yes, but I still want it to be there as an unpersisted member, so I
get it when I do

o.products.each do |p|
...
end

On 3/8/06, Mark Reginald James <mrj@bigpond.net.au>
wrote:
> Ben Anderson wrote:
>
> > I have a one-to-many relationship.  I want to be able to add objects
> > to the collection w/out persisting them.  How do I do this?
> >
> > The only thing I can''t think of is to use a transaction and
roll it back.
> >
> > In other words - I want to do this:
> >
> > o = Order.find(1)
> > p = Product.find(1)
> > o.products << p  # but don''t persist this
>
> o.products.to_ary << p
>
> --
> We develop, watch us RoR, in numbers too big to ignore.
>
> _______________________________________________
> Rails mailing list
> Rails@lists.rubyonrails.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>

Ben Anderson wrote:
> yes, but I still want it to be there as an unpersisted member, so I
> get it when I do
> 
> o.products.each do |p|
> ...
> end
> 
> On 3/8/06, Mark Reginald James <mrj@bigpond.net.au> wrote:
>>o.products.to_ary << p
Hmm, I''m surprised this doesn''t work.

-- 
We develop, watch us RoR, in numbers too big to ignore.