On Jan 29, 2009, at 7:33 PM, Scott Kulik wrote:
> Scott Kulik wrote:
>> I can do sorting by a single field like the following:
>>
>> @users.sort! { |a,b| a.name.downcase < => b.name.downcase }
>>
>> but what if i want to sort by user.name and then user.rank?
>>
>> what's the best way to do this?
>>
>> thanks!
>
> just got it:
>
> @objects.sort! do |a,b|
> comp = (b.rank <=> a.rank)
> comp.zero? ? (b.position <=> a.position) : comp
> end
>
> in case anyone else needs help
Actually, you can simplify that a bit:
@objects.sort! do |a,b|
(b.rank <=> a.rank).nonzero? || b.position <=> a.position
end
Look at the docs for Numeric#nonzero?
-Rob
Rob Biedenharn http://agileconsultingllc.com
[email protected]
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