# File lib/active_record/relation.rb, line 319
    def where_values_hash
          Hash[@where_values.find_all { |w|
            w.respond_to?(:operator) && w.operator == :==
          }.map { |where|
            [where.operand1.name,
             where.operand2.respond_to?(:value) ?
             where.operand2.value : where.operand2]
        }]
    end