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我questions在 mongodb 中有这些文档，它可以answers嵌入多个文档。我在 Rails 应用程序中使用 mongoid。

{
  "_id" : ObjectId("5642993541021327d3000004"),
  "asked_to" : [ 
      "5642978841021327d3000000", 
      "564297f441021327d3000001"
  ], 
  "text": "What is your hobby?",
  "answers": [
    {
      "_id" : ObjectId("56429baf41021327d3000005"),
      "user_id": "5642978841021327d3000000",
      "type": "text",
      "text": "Playing soccer",
      "status": "active"
    },
    {
      "_id" : ObjectId("46429baf41021327d3000092"),
      "user_id": "564297f441021327d3000001",
      "type": "video",
      "video_url": "http://www.myvideo.com/ewkrjwert7",
      "status": "inactive"
    }
  ]
}


{
  "_id" : ObjectId("7642993541021327d30000022"),
  "asked_to" : [ 
      "9642978841021327d3000027", 
      "564297f441021327d3000001",
      "994297f441021327d3000002"
  ], 
  "text": "What is your name?",
  "answers": [
    {
      "_id" : ObjectId("26429baf41021327d3000004"),
      "user_id": "564297f441021327d3000001",
      "type": "text",
      "text": "John abc",
      "status": "inactive"
    },
    {
      "_id" : ObjectId("86429baf41021327d3000091"),
      "user_id": "9642978841021327d3000027",
      "type": "text",
      "text": "Mary Kay",
      "status": "inactive"
    },
    {
      "_id" : ObjectId("86429baf41021327d3000091"),
      "user_id": "994297f441021327d3000002",
      "type": "video",
      "video_url": "http://www.myvideo.com/khgfdiuweo",
      "status": "active"
    }
  ]
}

{
  "_id" : ObjectId("5642993541021327d3000004"),
  "asked_to" : [ 
      "5642978841021327d3000000", 
      "564297f441021327d3000001"
  ], 
  "text": "Where do you live?",
  "answers": [
    {
      "_id" : ObjectId("56429baf41021327d3000005"),
      "user_id": "5642978841021327d3000000",
      "type": "video",
      "text": "Playing soccer",
      "status": "active"
    },
    {
      "_id" : ObjectId("46429baf41021327d3000092"),
      "user_id": "564297f441021327d3000001",
      "type": "video",
      "video_url": "http://www.myvideo.com/ewkrjwert7",
      "status": "inactive"
    }
  ]
}

我想获取所有这些问题文档，其中asked_to includes 564297f441021327d3000001任何嵌入式答案文档都符合此标准user_id ==564297f441021327d3000001 type == text || status == active

所以在上面的例子中，使用我的条件，它应该返回我上面的三个问题文档，因为每个问题，都有一个匹配这些条件的嵌入文档

我尝试像这样在 mongoid 中编写查询，但它当然不会工作，因为我没有or这样的东西可以使用。：

questions.where(asked_to: '564297f441021327d3000001').and("answer.user_id": "564297f441021327d3000001").and("answer.status": "active" or "answer.type": "text" )

那么我怎样才能实现我想要的呢？

4

0 回答 0