Want to find records with no associated records in Rails

Consider a simple association... class Person has_many :friends end class Friend belongs_to :person end What is the cleanest way to get all persons that have NO friends in ARel and/or meta_where? And then what about a has_many :through version class Person has_many :contacts has_many :friends, :through => :contacts, :uniq => true end class Friend has_many :contacts has_many :people, :through => :c

[xoyip]

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