I think the most efficient way would be to create a has_one in the
model with a unique name and use the conditions or order to get just
one entry. I just tested this on one of my apps and it worked pretty
well.
I assume here that friends are just other profiles and a profile has
many checkins?
so you probably have something similar in profile.rb
has_many :checkins
has_many :places, :through => :checkins
Add (I think anyways)
has_one :last_checkin, :class_name => "CheckIn", :order =>
'created_at'
has_one :last_place, :through => :last_checkin, :source => :place
And you can just do
@profile.send('friends').find(:all, :limit => 20, :order => 'RAND()',
include => :last_place) .to_xml(:include => :last_place)
* I put :last place in the finder to eager load, and again in the
to_xml so that is is included in the xml.
Another way which doesn't require the model modified or a builder and
is pretty ineffiecent for sql queries is
@items = @profile.send('friends').collect do |f|
h = f.attributes
h['place'] = f.checkins.last.place.attributes
h
end
@items.to_xml
Let me know if you still have problems and include the models.
-Josh
On Jul 30, 2:18 pm, cnk <[email protected]> wrote:
> I think creating a builder file in your views directory will be the
> easiest way to get exactly the xml output you want.
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