MongoMapper自定义类型不起作用

时间:2013-10-15 21:41:55

标签: ruby mongodb mongomapper

我已经使用MongoMapper几个星期了,并且喜欢它的很多功能。其中最吸引人的是能够定义自定义键类型和验证方法(请参阅此页面上的“自定义类型”:http://mongomapper.com/documentation/types.html)。

但是,我尝试使用它们进行小测试,并且在我的情况下验证方法没有触发。这是代码:

require 'mongo_mapper'

MongoMapper.connection = Mongo::Connection.new('localhost', 27017)
MongoMapper.database = "mmtestdb"

class ACustomType
    def self.to_mongo(value)
        puts "to_mongo is being called"
        "A Safe Value"
    end
    def self.from_mongo(value)
        puts "from_mongo is being called"
        "A Safer Value"
    end
end

class TestClass
    include MongoMapper::Document

    key :my_name, type: ACustomType
end

TestClass.delete_all
new_object = TestClass.new
new_object.my_name = "Unsafe Value!"
puts new_object.inspect
new_object.save
puts TestClass.all.inspect

以下是我的结果:

#<TestClass _id: BSON::ObjectId('525db435ab48651f64000001'), my_name: "Unsafe Value!">
[DEPRECATED] The 'safe' write concern option has been deprecated in favor of 'w'.
[#<TestClass _id: BSON::ObjectId('525db435ab48651f64000001'), my_name: "Unsafe Value!">]

我知道“写关注”问题,并使用https://github.com/mongomapper/mongomapper/issues/507处的解决方案修补了它。这是代码:

# Monkey Patch to solve issue https://github.com/jnunemaker/mongomapper/issues/507
module MongoMapper
  module Plugins
    module Querying
      private
        def save_to_collection(options={})
          @_new = false
          collection.save(to_mongo, :w => options[:safe] ? 1 : 0)
        end
    end
  end
end

我在测试示例中省略了它,因为无论是否有结果都是相同的。

有人可以帮忙吗?非常感谢。

1 个答案:

答案 0 :(得分:2)

您只需将密钥定义为:

 key :my_name, ACustomType

而不是:

 key :my_name, type: ACustomType

key的方法签名为def key(name, type, options = {})