method

association_primary_key

v7.0.0 - Show latest stable - Class: ActiveRecord::Reflection::BelongsToReflection

association_primary_key(klass = nil)

public

klass option is necessary to support loading polymorphic associations

# File activerecord/lib/active_record/reflection.rb, line 734
      def association_primary_key(klass = nil)
        if primary_key = options[:primary_key]
          @association_primary_key ||= -primary_key.to_s
        else
          primary_key(klass || self.klass)
        end
      end

association_primary_key

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