我用这个代替，它工作得很好：
可以直接在find()（和类似的）操作中完成。大多数驱动程序和shell使用方法的第二个参数作为投影规范，请...
You can alsofindOne,findById,update, etc. constinstance=awaitMyModel.findOne({/* ... */});console.log(instance.my.key);// 'hello' For more details check outthe docs. Important!If you opened a separate connection usingmongoose.createConnection()but attempt to access the model throughmongoose...
Model.findOneAndUpdate = function (conditions, update, options, callback) { if ('function' == typeof options) { callback = options; options = null; } else if (1 === arguments.length) { if ('function' == typeof conditions) { var msg = 'Model.findOneAndUpdate(): First argument mu...
1. Document middleware Its supported for document functions init, validate, save and remove 2. Query middleware Its supported for query functions count, find, findOne, findOneAndRemove, findOneAndUpdate, insertMany and update. Pre and Post hooks There are two types of Pre hooks 1. serial As ...
version}`); let cond = {}; let update = { name: 'Sarah' }; let opts = { upsert: true, new: true }; let sarah = await Test.findOneAndUpdate(cond, update, opts); console.log(sarah); return conn.close(); } run(); Output: issues: ./6880.js mongodb: 3.0.15 mongoose: 5.2....
A. At its core, this issue stems from not connecting to MongoDB. You can use Mongoose before connecting to MongoDB, but you must connect at some point. For example: awaitmongoose.createConnection(mongodbUri).asPromise();constTest= mongoose.model('Test', schema);awaitTest.findOne();// Wi...
2019-12-08 00:14 −1, 原因是因为:findOneAndUpdate()内部会使用findAndModify驱动,驱动即将被废弃,所以弹出警告!附上官方解释:Mongoose v5.5.8: Deprecation Warnings 2, ... 武卡卡 0 2267 ssh: connect to host 10.1.5.94 port 22: Connection refused ...
Once we have our model, we can then instantiate it, and save it: constinstance=newMyModel();instance.my.key='hello';awaitinstance.save(); Or we can find documents from the same collection awaitMyModel.find({}); You can alsofindOne,findById,update, etc. ...
false` to skip null check with `findoneandupdate()` #9654 291 * fix(index.d.ts): make methods and statics optional on schema #9801 292 * fix(index.d.ts): remove non backwards compatible methods restriction #9801 293 * docs: removed the extra word on comment doc #9794 [ henriquel...