On Jan 20, 2010, at 6:59 PM, Steve Castaneda wrote:
Marnen Laibow-Koser wrote:
Look at Array#partition.
into different variables in my controller. Would
that be the best place to do this?
It might be better in the model. You shouldn't have much logic in
the
controller.
Best,
--
Marnen Laibow-Koser
http://www.marnen.org
mar...@marnen.org
Thanks as always for the guidance, Marnen. I'm checking that out now.
And if you have more than just red/blue (or any two-choice condition),
you might have more success with Enumerable#group_by (as added by
ActiveSupport). Where Array#partition gives you a two-element array,
Enumerable#group_by gives you a hash with the "condition" as the key
and an array of elements as the value.
irb> require 'rubygems'
=> true
irb> require 'activesupport'
=> true
irb> widgets = [ [1, 'red'], [2, 'blue'], [3, 'red'], [4, 'blue'], ]
=> [[1, "red"], [2, "blue"], [3, "red"], [4, "blue"]]
irb> widgets.partition {|number,color| color == 'blue' }
=> [[[2, "blue"], [4, "blue"]], [[1, "red"], [3, "red"]]]
irb> widgets.group_by {|number, color| color }
=> #<OrderedHash {"blue"=>[[2, "blue"], [4, "blue"]], "red"=>[[1,
"red"], [3, "red"]]}>
(OK, so you actually get an OrderedHash from ruby1.8.6, but it works
like you'd expect.)
-Rob
Rob Biedenharn http://agileconsultingllc.com
r...@agileconsultingllc.com
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