last:'Ghost'},'name occupation',function(err,person){ if(err) return handleError(err) console.log('%s %s is a %s',person.name.fisrt,person.name.last,person.occupation) }) 查询结果的格式取决于做什么操作: findOne()是单个文档 find
// 3.更新数据Model.update()这个接口被废弃了,改用Model.updateOne()或者Model.updateMany() Users.updateOne() Users.updateMany() 1. 2.
If you opened a separate connection usingmongoose.createConnection()but attempt to access the model throughmongoose.model('ModelName')it will not work as expected since it is not hooked up to an active db connection. In this case access your model through the connection you created: constconn=...
在Model.update那一节有个参数–runValidators. 还没有详细说. 这里, 展开一下. 实际上, validate一般只会应用在save上, 如果你想在update使用的话, 需要额外的trick,而runValidators就是这个trick. var opts = { runValidators: true }; Test.update({}, update, opts, function(error) { //额外开启runVa...
_.merge(req.person, req.body);// The req.person is already a Person, so just update()req.person.save(function(err, person){if(err) res.status(500).jsonp(err);else{ res.status(200).jsonp(person); } }); };varinsertPerson =function(req, res){varperson =...
awaitUpdate.findOne({status:UPDATE_STATUS.PENDING,_id:update_id}).populate({path:'place',populate:'category'}).populate({path:'user'}) This is the error message: TypeError: options.populate.map is not a function at populate (/app/node_modules/mongoose/lib/model.js:4425:37) at _populate...
con.once('open',()=>{//定义一个schemaletSchema= mongoose.Schema({category:String,name:String});Schema.methods.eat=function(){console.log("I've eatten one "+this.name); }//继承一个schemaletModel= mongoose.model("fruit",Schema);//生成一个documentletapple =newModel({category:'apple',na...
.populate('_creator') // <-- not really necessary .exec(function (err, stories) { if (err) .. console.log('The stories JSON is an array: ', stories); }) Updating Now that we have a story we realized that the_creatorwas incorrect. We can updateObjectIdrefs the same as any other...
Replacedmg_remove_double_dots()with a path check function:mg_path_is_sane() Extended list of HTTP reason texts for status codes Started renaming examples to a standard naming scheme Removed very old STM32 examples Notice: The back-to-back socket pipemg_mkpipe()deprecation has been postponed,...
The plugin relies on either __v or updatedAt to implement concurrency control; as such, this plugin might not be compatible with other plugins that alter these fields. The plugin causes the document's version to be incremented whenever save() is called when using it for concurrency control.De...