WebMongoose has a more powerful alternative called populate(), which lets you reference documents in other collections. Population is the process of automatically replacing the specified paths in the document with document(s) from other collection(s). We may populate a single document, multiple documents, a plain object, multiple plain objects, or ... http://duoduokou.com/php/34626072122889770008.html
Tìm hiểu về Populate trong Mongoogse - Viblo
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mongodb 为什么我的mongoose填充查询抛出“Cannot populate …
WebJan 26, 2024 · const mongoose = require ('mongoose'); const { ObjectId } = mongoose.Schema.Types; const cardSchema = new mongoose.Schema ( { name: { type: String, required: true }, localDevice: [ { type: ObjectId, required: true, refPath: 'onModel' } ], onModel: { type: ObjectId, enum: ['location', 'device'] } }, { timestamps: true } ); const … WebMongoose 的 populate() 可以连表查询，即在另外的集合中引用其文档。 Populate() 可以自动替换 document 中的指定字段，替换内容从其他 collection 中获取。 ... 而使用 refPath 意味着，无论 commentSchema 可以指向多少个 Model，联合查询的时候只需要一个 … WebIf truthy, Mongoose will build an index on this path when the model is compiled. SchemaTypeOptions.prototype.ref Type: «Function String» The model that populate () should use if populating this path. SchemaTypeOptions.prototype.ref Type: «Function String» The path in the document that populate () should use to find the model … farmhouse finds milton wi