mongoose update

uppercase field type, and one for the type of lowercase fields that quotation marks contain, such as ' string ' var Schema = new Mongoose. Schema ({ Name:{type:string}, category:{type:string,default: ' Person '} " Schema.methods.say = function () { Console.log ("This is the methods property of the schema object") //2. Create model, which is a constructor compiled from the schema, or a class, through which the Documen

1. Define ShcemaIn Mongoose everything starts with the schema. Each schema corresponds to a MongoDB collection and defines the model of documents in that collection.var mongoose = require (' Mongoose '); var Schema = Mongoose. Schema; var New Schema ({ title: string, author:string, body: string, comments: [{body

Mongoose: how to solve the problem that unique does not take effect and how to remove the unique restriction, mongooseunique Preface Unique is a member of schema Constraints Verification. Its role is to make the value of a field unique (cannot be repeated) To keep the field unique, use the type value:{type:String,unique:true,dropDups: true} Note:Once mongoose modifies the data storage organization, the data

Label:Brief introductionToday we will learn mongoose, what is mongoose, it is in MongoDB what is the relationship between it, what it can be used to do, introduce mongoose before we first a brief look at MongoDB. MongoDB is an open source NoSQL database, compared to MySQL-like relational database, it is more light and flexible, it is very suitable for use in the

Label:Nodejs operation MongoDB can use Mongoose:Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment.Install Mongoose:NPM Install MongooseGet MongoDB Connectionvar conn = mongoose.connect (' mongodb://localhost/mytest ');var Schema = Mongoose. Schema, ObjectId = Schema.objectid;var person = new Schema ({Title: {type:string}, age: {type:number, Min:5, max:20}, Meta: {Likes: [String], Birth: {type:date}}});var p = m

1 /********** User table by Jaysir 2015.6.212 ***********3 *********** can search the following keywords to view the features that are not implemented4 *********** 5 *********** TODO: Not completed6 *********** Done: Completed7 *********** totest: Pending Test8 *********** notest: no test required9 *********** Waiting: function to be determinedTen *********** One *********** Interface: (not implemented to add groups, change the group of Friends and other functions) A *********** findonebyemai

Label:A article schema is defined first. var mongoose = require (' Mongoose '); var Schema = Mongoose. Schema; Exports.schema = new Schema ({ title:string,//title description:string,//Description content:string,//content Status:{type:number, defalut:0},//unpublished: 0, posted: 1 create_at: {type:date, default:date.now}//add Time }); Add a test data

Built-in PromisesMongoose asynchronous operations, like. Save () and queries, return promises/a+ conformant Promises. This means the can do things like Mymodel.findone ({}). then () and yield Mymodel.findone ({}). EXEC () (If you ' re using CO ).This means that you can do something like Mymodel.findone ({}). then () and yield Mymodel.findone ({}). exec (if you're using CO)For backwards compatibility, Mongoose 4 returns mpromise promise by default. va

/mongoosekeeper '); "//Call Update configuration, here the configuration can read a jsonmongoosekeeper.config ({ " host ":" 192.168.57.186 ", " database ":" dbname ", " UserID ":" userid "," password ":" 123456 ", " port ": 27017}); Define Model When you call model, mongoosekeeper.use you can use the method to wrap the actual call var Express = require (' Express '), router = Express. Router (), mongoosekeeper = r

ObjectiveAfter reading the node. JS actual combat, which in the data storage section mentioned Redis, Mongodb, I myself also wrote a few simple demo according to the book introduction, in the demo process first encountered the problem is the data type and common curd. The common operation of MongoDB is in two ways, one is to use the API directly, and it is equivalent to using T-SQL to write SQL statements to manipulate the data in the server client, followed by using the

(-?-;), the weekend is really fast ah, a long time ago saw Imooc on a personal movie site, a two-period video, the two weeks House home to play nothing dry, I also learned to build a, these things are the basis, as long as the time is very studious, Nodejs This stuff is light weight, where is uncomfortable.　　If you learn to write, you can learn: Express New Project Express comes with the use of the Jade template engine Express's routing Management Rights Management in Expres

QuestionI have the just started mongodb up with and I recently gone through Mongoose , the an ODM framework.On the documentation, I couldn ' t find why do we need to use Mongoose . One reason I can give is the we can define application schema from Mongoose .I am looking for more possible reasons, and needs that would attract me to use

Turn http://www.cnblogs.com/skynet/archive/2010/07/24/1784110.htmlThere's a lot of mongoose in this blogger.IntroductionBefore delving into the mongoose source, we should know what the Web server is. What services does it offer? How to provide service? What protocol is used? How do clients uniquely identify a Web server's resources? Let's put aside mongoose to in

Tags: col compilation erro count lang tool val Data ViewAt this point, our site is not called a dynamic site, because the data you want is bogus, so now we're going to design the database model.MongooseThe tool module we used was mongoose, and he was able to model MongoDB in such an operation that there were several concepts in mongoose, namelySchema: pattern, in which we define the data, define the field p

UpdateThere are several ways to update the document. Let's take a look at the traditional Update methodTank.findbyid (ID, function (err, Tank) { if (err) return HandleError (err); Tank.size = "large"; Tank.save (err) { if (err) return HandleError (err); Res.send (tank); });The above code is the first to find out a dociment and then in the

Nodejs+express+ejs+mongoose instancesNodejs learning is extremely painful, here will learn something to do a tidy, is self comfort it. According to the online Todo example, with Express and Mongoose rewrite part of the code, mainly business logic this piece (CRUD), this is no difficulty. The problem that has not been solved at present is: Express cannot use Ejs layout template, check for a long time did not

As for Wikipedia, the original address: Http://en.wikipedia.org/wiki/Mongoose_ (web_server)Mongoose is a cross-platform Web server. Originated from Cesanta software company.Mongoose is built on top of mongoose embedded libraries. The Mongoose Library is used to perform restful architecture services, serve the network graphical user interface on embedded devices,

---restore content starts---Development using Webstorm 9New nodejs+express project NewfarmerArticle Directory Configure Mongoose Creating Directories and files Insert data, Post commit JSON add a record Query data, remove newly added records 1. Configure MongooseIncrease the class library of MongooseNPM Install Mongoose--save2. Creating Directories and filesIn the models directory,

Recently developed too busy, there is no time to update the blog, want to use this blog to summarize the relevant experience, in case the following can be used:First, Antd1.onChange of undefined problem: it is possible that the form in the page has the same name, or the parent element of the time-out form does not have a unique key set.Wait for update ...Second, ES6Wait for

Schema Briefschema--is a kind of database model skeleton stored in file form, which can not directly go to the database side, that is, it does not have the ability to operate the database, just a representation of the database model in the program fragment, it is a data attribute model (the traditional meaning table structure), or a "set" model skeleton.So how to define a schema, see example:var mongoose = require ("