method

association_primary_key

v5.1.7 - Show latest stable - 0 notes - Class: ActiveRecord::Reflection::ThroughReflection

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What's this?

association_primary_key(klass = nil) public

We want to use the klass from this reflection, rather than just delegate straight to the source_reflection, because the source_reflection may be polymorphic. We still need to respect the source_reflection’s :primary_key option, though.

Show source

# File activerecord/lib/active_record/reflection.rb, line 884
      def association_primary_key(klass = nil)
        # Get the "actual" source reflection if the immediate source reflection has a
        # source reflection itself
        actual_source_reflection.options[:primary_key] || primary_key(klass || self.klass)
      end

association_primary_key

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