[英]Mongoose find by ObjectID reference
I have two schemas: 我有两个架构:
let adSchema = mongoose.Schema (
{
author: {type: ObjectId, ref: 'User'},
title: {type: String, required: true },
town: {type: ObjectId, ref: 'Town', required: true},
}
);
And town schema: 和城镇架构:
let townSchema = mongoose.Schema (
{
name: {type: String, required:true, unique:true},
ads: [{type: ObjectId, ref: 'Ad'}]
}
);
I need to make query that finds all Ads by town.name
How can I do that? 我需要通过
town.name
查找找到所有广告的查询。我该怎么做?
You can request a town by name and use the mongoose populate method to fill the ads Array from town object. 您可以按名称请求城镇,并使用mongoose populate方法从城镇对象填充广告数组。
You can find examples in the mongoose documentation: 您可以在mongoose文档中找到示例:
http://mongoosejs.com/docs/populate.html http://mongoosejs.com/docs/populate.html
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