Rails - Jun 2006 - Getting 1 from children of has_many, Noob question...

The ''Agile Web'' book says that you can iterate over a list of
children
as so:

order.line-items.each do |li|
etc...

This is fine when you need then all consecuitvely, but I need to pull 
the first one for the top of the page and still list all at the bottom.

So, the question is:

How do I reference the first item (child) directly?

Thanks

Lance F. Squire

-- 
Posted via http://www.ruby-forum.com/.

Not tested, but something like...

order.line-items.first # for the first one


(order.line-items - order.line-items.first).each do # for the remaining ones

Tho'' would be better to define the first one and remaining ones in the
controller;

@first_line-item = order.line-items.first

@remaining_line-items = order.line-items - order.line-items.first


HTH 

Lance Squire wrote:
> The ''Agile Web'' book says that you can iterate over a
list of children
> as so:
>
> order.line-items.each do |li|
> etc...
>
> This is fine when you need then all consecuitvely, but I need to pull 
> the first one for the top of the page and still list all at the bottom.
>
> So, the question is:
>
> How do I reference the first item (child) directly?
>
> Thanks
>
> Lance F. Squire
>
>

Chris T wrote:
> Not tested, but something like...
> 
> order.line-items.first # for the first one
> 
> 
Thanks! This worked well.

Had to change it to something like:

order.line-items.first.unit_price

to get what I wanted.

Needed compleate list at bottom, so extra code not need but good for 
future reference.

Thanks,

Lance

-- 
Posted via http://www.ruby-forum.com/.