class ActiveRecord::PredicateBuilder

def build(attribute, value, operator = nil)
  value = value.id if value.respond_to?(:id)
  if operator ||= table.type(attribute.name).force_equality?(value) && :eq
    bind = build_bind_attribute(attribute.name, value)
    attribute.public_send(operator, bind)
  else
    handler_for(value).call(attribute, value)
  end
end