Using named_scope with counts of child models
- by Joe Cairns
Hi, I have a simple parent object having many children. I'm trying to figure out how to use a named scope for bringing back just parents with specific numbers of children.
Is this possible?
class Foo < ActiveRecord::Base
has_many :bars
named_scope :with_no_bars, ... # count of bars == 0
named_scope :with_one_bar, ... # count of…