module ActiveRecord::AttributeMethods::Query

def _query_attribute(attr_name) # :nodoc:
  value = self._read_attribute(attr_name.to_s)
  query_cast_attribute(attr_name, value)
end

def query_attribute(attr_name)
  value = self.public_send(attr_name)
  query_cast_attribute(attr_name, value)
end

def query_cast_attribute(attr_name, value)
  case value
  when true        then true
  when false, nil  then false
  else
    if !type_for_attribute(attr_name) { false }
      if Numeric === value || !value.match?(/[^0-9]/)
        !value.to_i.zero?
      else
        return false if ActiveModel::Type::Boolean::FALSE_VALUES.include?(value)
        !value.blank?
      end
    elsif value.respond_to?(:zero?)
      !value.zero?
    else
      !value.blank?
    end
  end
end