mongoose virtual
Only non-virtual properties work as part of queries and for field selection. Since virtuals are not stored in MongoDB, you can't query with them. Aliases. Aliases are ... ,options=null] «Object» Additional options like limit and lean . VirtualType constructor. This is what mongoose uses to define virtual attributes via Schema.prototype.
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 mongoose virtual 相關參考資料
Adding 'virtual' variables to a mongoose schema? - Stack ...
This is perfectly possible in mongoose. Check this example, taken from their documentation: var personSchema = new Schema( name: first: ... https://stackoverflow.com Mongoose Schemas v4.13.20
Only non-virtual properties work as part of queries and for field selection. Since virtuals are not stored in MongoDB, you can't query with them. Aliases. Aliases are ... https://mongoosejs.com Mongoose v5.9.18:
options=null] «Object» Additional options like limit and lean . VirtualType constructor. This is what mongoose uses to define virtual attributes via Schema.prototype. https://mongoosejs.com Mongoose v5.9.18: Mongoose Tutorials: Mongoose Virtuals
In Mongoose, a virtual is a property that is not stored in MongoDB. Virtuals are typically used for computed properties on documents. Your First Virtual; Virtual ... https://mongoosejs.com Mongoose v5.9.18: Plugins
Just create a plugin once and apply it to each Schema : // loadedAt.js module.exports = function loadedAtPlugin(schema, options) schema.virtual('loadedAt'). https://mongoosejs.com Mongoose v5.9.18: Query Population
ObjectId, ref: 'Story' }] }); const storySchema = Schema( author: type: Schema. ... Dynamic References via `refPath`; Populate Virtuals; Populate Virtuals: The ... https://mongoosejs.com Mongoose v5.9.18: Schemas
x please take a moment to read the migration guide. Defining your schema; Creating a model; Ids; Instance methods; Statics; Query Helpers; Indexes; Virtuals ... https://mongoosejs.com Schema - Mongoose
var mongoose = require('mongoose'); var ObjectId = mongoose.Schema.Types.ObjectId;. Types: String; Number; Boolean | Bool; Array; Buffer; Date; ObjectId | ... https://mongoosejs.com Virtual attributes - Mongoose
If you want the virtual field to be displayed on client side, then set virtuals: true} for toObject and toJSON in schema options as below: var PersonSchema = new ... https://mongoosejs.com Virtuals vs Methods in Mongoose - Stack Overflow
Neither Instance methods, static methods, or virtuals are stored in the database. The difference between methods and virtuals is that virtuals are ... https://stackoverflow.com |