Getting 1 from children of has_many, Noob question

Rails
1

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

2

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

3

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