Mongoose 猫鼬以猫鼬为食

我已经阅读了许多mongoose deep populate文档和文章，但在这种情况下，我似乎无法让它正常工作，但我有一种感觉，这是因为在存储数据时，

dealSchema

没有id。您有什么想法

因为这里的目标是在elasticsearch中使用Mongoostic并对信息进行索引，所以我将使用插件传递populate参数

//mongoose version 4.8.0

var dealSchema = new Schema({
    deal: {type: Schema.ObjectId, ref: 'Deal'},
    discounts: [discountSchema]
}, {_id:false});


var offerSchema = new Schema({
    name: String,
    description: String,
    partner: {type: Schema.ObjectId, ref: 'Partner'},
    venues: [{type: Schema.ObjectId, ref: 'Venue'}],
    deals: [dealSchema],
    modified: Date,
    created: Date
});


//=================================================//
mongoose.connect('mongodb://127.0.0.1:27017/production');
offerSchema.plugin(mongoosastic, {
  hosts: [ 'http://127.0.0.1:9200' ],
    index: 'myIndex',
    type: 'offer',
    populate: [
        { path: 'partner', model: 'Partner', select: 'name' },
        { path: 'venues', model: 'Venue', select: 'name' },
        { path: 'deals.deal', model: 'Deal', select: 'name' }
    ]
});

///////// indexed data in ES ///////////
// 1. partners and venues are populated as expected, name only.
// 2. deals.deal is not populated as intended

{
  "_index": "myIndex",
  "_type": "offer",
  "_id": "568454a104439f0300a57e86",
  "_score": 2.1182644,
  "_source": {
    "name": "offer name",
    "description": "This is an offer.",
    "partner": {
      "_id": "566ddbf61e11f0030020fcc5",
      "name": "partner one"
    },
    "venues": [
      {
        "_id": "566df15d1e11f00300211c13",
        "name": "venue one"
      },
      {
        "_id": "566df2f1b6e09103003595a6",
        "name": "venue two"
      }
    ],
    "deals": [
      {
        "deal": "566df755b6e091030035cbed",
        "discounts": [
          {
            "amount": 0,
            "attribute": "566ddeff1e11f0030020fccf"
          },
          {
            "amount": 0,
            "attribute": "566ddef91e11f0030020fcce"
          }
        ]
      }
    ],
    "modified": "2016-05-31T23:04:55.476Z",
    "created": "2015-12-30T22:03:13.354Z"
  }
}

（代表OP发布）

通过这种方式填充，实际上会按预期填充

deals.deal

。因此，在声明式填充时，这可能是一个

mongoostic

问题

Offer.findOne({'_id': '568454a104439f0300a57e86'}).populate('deals.deal').exec(function(err, doc){
    console.log(JSON.stringify(doc));
});

---

下面的代码可以工作。在重新运行之前，我需要删除elasticsearch索引

mongoose.connect('mongodb://127.0.0.1:27017/production');
    offerSchema.plugin(mongoosastic, {
      hosts: [ 'http://127.0.0.1:9200' ],
        index: 'myIndex',
        type: 'offer',
        populate: [
            { path: 'partner', model: 'Partner', select: 'name' },
            { path: 'venues', model: 'Venue', select: 'name' },
            { path: 'deals.deal', model: 'Deal', select: 'name' }
        ]
    });

---

你得到了什么？你期望得到什么。这个问题似乎不完全。我得到了一个人满为患的场地和合作伙伴，名称仅如预期。然而，这笔交易仍然只是我的一个愿望。没有人口和错误。我一到家就会发布回复。你确定交易集合中存在交易吗？已解决：我只需要删除我的elasticsearch索引，然后使用上面显示的{path:'deals.deal'，model:'deal'，select:'name'}重新导入。。。感谢拉维的持续回复。@RaviShankar:请不要在标题中使用[已解决]——我们不使用它们。谢谢。我以前使用过相同的代码，当我查询elasticsearch创建的索引时，它不会填充。它仍然返回ObjectId，而不是实际引用的数据。我是否需要使用mongoostic/mongoose为

ref

类型创建自定义映射或任何类似的东西。它不起作用，它返回相同的ObjectId