.each { |m| delegate m, :to => :published_at } - Ruby on Rails: Talk

Message from discussion .each { |m| delegate m, :to => :published_at }

Duane Johnson

More options Jan 1 2007, 11:43 am

From: Duane Johnson <duane.john...@gmail.com>

Date: Mon, 1 Jan 2007 09:43:04 -0700

Local: Mon, Jan 1 2007 11:43 am

Subject: Re: [Rails] Re: .each { |m| delegate m, :to => :published_at }

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Thanks, Tom, that's really handy.

I was wondering where this 'delegate' method is defined, so I looked
it up and found it in ActiveSupport--it's a method defined in the
Module class. Pretty tricky :)

Available here, if anyone else is interested:
activesupport/lib/active_support/core_ext/module/delegation.rb

Duane Johnson
(canadaduane)
http://blog.inquirylabs.com/

On Jan 1, 2007, at 12:52 AM, Tom Fakes wrote:

> This is the quick way of writing the following:

> def year
> published_at.year
> end

> def year=(y)
> published_at.year = y
> end

> # Same for month and day

> The 'delegate' method allows you to delegate a member access to a
> member with the same name on a different member object, so you can
> avoid writing 'content.published_at.year'

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