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method

has_primary_key?

Importance_0
v2.3.8 - Show latest stable - 0 notes - Class: ActiveRecord::Associations::HasAndBelongsToManyAssociation
has_primary_key?() public

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# File activerecord/lib/active_record/associations/has_and_belongs_to_many_association.rb, line 25
      def has_primary_key?
        return @has_primary_key unless @has_primary_key.nil?
        @has_primary_key = (@owner.connection.supports_primary_key? &&
          @owner.connection.primary_key(@reflection.options[:join_table]))
      end
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