如何从nodejs mongoose中的模型关系访问另一个模型关系的访问

Question

我有3个模型。

1 creative.js :

var creativeSchema = new mongoose.Schema({
 title: {type: String, required: true, validate: lengthValidator },
 desc: {type: String },
 video_format: { type : mongoose.Schema.ObjectId, ref : 'VideoFormat' }
});     

return this.find(criteria)

 .populate('video_format')
 .populate('order')
 .sort({'createdDate': -1}) // sort by date
 .limit(options.perPage)
 .skip(options.perPage * options.page)
 .exec(cb);

2 : order.js

var orderSchema = new mongoose.Schema({
 title: {type: String, required: true, validate: lengthValidator},
 desc: {type: String },
 creative: { type : mongoose.Schema.ObjectId, ref : 'Creative'}
}); 

  return this.find(criteria)
   .populate('creative') 
   .sort({'createdDate': -1}) // sort by date
   .limit(options.perPage)
   .skip(options.perPage * options.page)
   .exec(cb);

3 : video_format.js

var videoFormatSchema = new mongoose.Schema({
 title: {type: String, required: true, validate: lengthValidator},
 creatives: [{ type : mongoose.Schema.ObjectId, ref : 'Order'}]
});


 return this.find(options)
 .sort({'createdDate': -1}) // sort by date
 .populate('creatives')
 .exec(cb);

所有人群都正常。

我正在从广告素材访问 video_format。

<%= creative.video_format.title %>

我正在从订单访问广告素材

<%=  order.creative.title %>

但我无法通过订单访问 video_format。

*<%=  order.creative.video_format.title %>*

Answer 1

遗憾的是，Mongoose 只支持一级人口。您可以尝试一些用于嵌套填充的第 3 方插件。

检查这个：https://github.com/buunguyen/mongoose-deep-populate

如何从nodejs mongoose中的模型关系访问另一个模型关系的访问

How to access access of another model relationship from a model relationship in nodejs mongoose

mongoose

mongodb

node.js