On 20 July 2010 04:14, badnaam wrote:
> Here is *AN* answer if someone else runs into this..
Your solution may certainly work... but is a bit "imperative" in
coding terms, and does introduce an n+1 problem.
Rails offers a feature called "counter_cache" on associations - which
gives you a column
Here is the answer if someone else runs into this..
GrandPa.all do |gpa|
p gpa.name
gpa.pas.all(:joins => :kids, :select => "pas.*, count(pas.id) AS
kid_count"
:group => :id, :order => "kid_count DESC").each do |pa|
p "#{pa.name} : #{pa.kid_count}"
end
end
On Jul 19, 7:58 pm, Angel
>
> Thanks.
> > Grandpa has one to many kids and has one pa
> No, Grandpa has_many pas
>
How is this possible? That's like saying I have two left arms.
>
> I didnt quite get how you proposed listing the pas (and kid count for
> each pa) that belong to a certain grandpa
>
Because the sort is to eas
Thanks.
> Grandpa has one to many kids and has one pa
No, Grandpa has_many pas
I didnt quite get how you proposed listing the pas (and kid count for
each pa) that belong to a certain grandpa
On Jul 19, 7:42 pm, Angel Robert Marquez
wrote:
> Kid has one pa and has one grandpa through pa
> Pa has
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