I've got a Post class where I'm trying to display the most recently
active posts. "Recently active" is based on the created_at timestamp of
the latest comment on that post, or if there are no comments, then on
the created_at timestamp of the post itself.
Here's what I've got:
def recent_activity
self.comments.last ? self.comments.last.created_at : self.created_at
end
def Post.recently_active
Post.all.sort do |a,b|
b.recent_activity <=> a.recent_activity
end
end
Is it possible to turn this into a named scope? I'm pretty sure order()
won't take a calculated value. I know about using lambdas in scopes,
too, but can't see how to combine that with sorting/ordering.
Any ideas?
A.
--
Alex "Skud" Bayley
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