Richard Schneeman wrote:
I have a model_one that :has_many model_two-s, I would like to find the
ten model_one's that have the most model_two's. What is the best way to
Something like this?
Model_One.find(:all, :limit => 10, :joins => :model_two,
:order => "count(model_twos.model_one_id) desc",
:group => "model_ones.id")
I could do it in raw SQL, but I don't know the exact match. Fred Cheung or someone will correct me if I got it wrong!
The :joins is so you don't eager-load the models and interfere with the group concept, I suspect. The group is so you are allowed to count within each group.