Flowdock
method

primary_key

Importance_0
Ruby on Rails latest stable (v4.0.2) - 0 notes - Class: ActiveRecord::Reflection::AssociationReflection
primary_key(klass) private

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# File activerecord/lib/active_record/reflection.rb, line 390
        def primary_key(klass)
          klass.primary_key || raise(UnknownPrimaryKey.new(klass))
        end
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