Rails - using :include to find objects based on their child's attributes
- by adam
I have a sentence and correction model
class Sentence < ActiveRecord::Base
has_one :correction
class Correction < ActiveRecord::Base
belongs_to :sentence
and I'm trying find all sentences which don't have a correction. To do this I'm simply looking for corrections which don't exist i.e. whose id = nil. But it is failing and i can't figure out why
Sentence.find :all, :include => :correction, :conditions => {:correction => {:id => nil}}
Perhaps its the syntax or maybe just the overall approach. Can anyone help?
