使用模型进行查询操作。可以使用模型的各种方法来执行查询操作,如find、findOne、findById等。以下是一些示例: 查询所有文档: 查询所有文档: 根据条件查询文档: 根据条件查询文档: 查询单个文档: 查询单个文档: 根据ID查询文档: 根据ID查询文档: 以上是使用mongoose查询Mongo文档的基本步骤和示例。根据具体需求,还可以使用...
I had also tried .exec(function ...) but that too not worked. The following errors come out : TypeError : cursor.toArray is not a function. MongoInvalidArgumentError Error comes out only in Model.find() on the other hand Model.findById() is working correctly.Author...
12 MongoDB / Mongoose: MarkModified a nested object 1 mongoose query wont be modified 1 Mongoose not returning Regex substrings 1 How to fix "trim" not working in mongoose schemas 4 minlength validator not working in mongoose 0 Nodejs trim() is not a function Hot Network Questions ...
查询文档可以用model的find、findbyId,findOne,和where这些静态方法。...如果想更新单独一条文档并且返回给应用层,可以使用 findOneAndUpdate 方法。六、文档-Documents Mongoose document代表着MongoDB文档的一对一映射。...Model的多个静态辅助方法都可以查询文档 Query实例有一个.then()函数,用法类似Promise 我们看一...
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...
Configuration: Mongoose 4.0.5, MongoDb 3.0.4, Node 0.12.4 Issue does not appear on Mongoose 3.8.30 My database has the following data: db.users.find() { "_id" : ObjectId("5580c79aa11e7310b2985ab1"), "email" : "an_email", "color" : "", "u...
("personId found:",personId); if (mongodb.ObjectId.isValid(personId)) { Person.findById(personId) .then(function(person) { debug("Found", person.lastName); req.person = person; next(); }); } else { res.status(404).jsonp({ message: 'ID ' + personId + ' not found'}); }...
if you know _id of the document you can use findByIdAndDelete(id) and this is is a shorthand for findOneAndDelete({ _id: id }). import Question from '../models/Question'; const deleteQuestion = (questionId: string) => { try { Question.findByIdAndDelete(questionId); } catch (e) ...
That’s not too bad, but with more logic it can easily become visually overwhelming. In the last example, I’ll show what the same task looks like using promises. We’ll switch to using Model queries that return a promise via the .exec() function. var promise = User.findById('123')...
Note that there was only one error handler for both of the promises,findById(id).exec()anduser.save(). For me, the benefit of using promises is really in the ability to read what's going on in the code and to consolidate error handling into one place with the option to break that ...