mongoose index

Mongoose learning comprehension (recommended) and mongoose learning Comprehension 1. Create schemas How to Create schemas: var userSchema = new mongoose.Schema({ name: String, email: String, createdOn: Date }); Schemas has the following data types: String Number Date Boolean Buffer ObjectId Mixed Array In particular, the ObjectId, Mixed, and Array types must be described. The follow

Mongoose simple table connection query and Mongoose simple The original article is taken from my front-end blog. You are welcome to visit Http://www.hacke2.cn As I mentioned in this article, it is based on Node. js + jade + Mongoose mimic gokk. TV, at that time, the development was stopped because I deeply felt that I was wrong at that time. I should use two sche

introduction of MongooseRefer to the Mongoose configuration information you just created (8, 92 lines) before the App.js routing module1 varExpress = require (' Express ');2 varPath = require (' path ');3 varFavicon = require (' Serve-favicon '));4 varLogger = require (' Morgan ');5 varCookieparser = require (' Cookie-parser '));6 varBodyparser = require (' Body-parser '));7 8 varMongoose = require ('./config/mongoose.js '));9 vardb =

to this problem is to add _crt_nonstdc_no_deprecate predefined, so initially tried to directly add #define in code engineering _crt_nonstdc_no_deprecate or #define _CRT_NONSTDC_NO_DEPRECATE 1, the error still occurs either before or after the #include "stdafx.h" code. And then think about it. The definition of the preprocessor in VS should be added under the project properties of the preprocessor project, such as the attempt to successfully complete the compilation of the MongooseEmbeed.sln pro

Mongoose getting started with mongooseNo matter what database you use as the db service, connect is an essential step. Method 1: @ Param {String} uri @ param {Object} options @ param {Function} callbackconnect (uri, [options], [callbakc]) returns the mongoose Object. connect ('mongodb: // localhost/test', {mongos: true}, function (err, result) {if (err) {console. log ('error ing to MongoDB Database. '+ err)

Data model and Base operation templateIn order to make the engineering structure clear, the establishment of data Model (SCHEMA) and the base operation template of adding and deleting and modifying are named as collection in database design (corresponding to the table definition in relational database) and stored in the Models folder.Creation of schema and model:Schema is the data schema in mongoose, which can be understood as the table structure defi

debugging information; In addition, modify the Mg_ev_handler function in the MONGOOSE.C, add debug statements for each event of fossa, and output the current event type.1) Rebuild the mongooseembbed project, open the debugging State;2) Open Google Chrome, enter: http://localhost:8080 , the debug results are as follows:By default Mongoose is the same as other HTTP servers, and the files in the current directory are displayed by default. and added a hy

Many people ask: how do I share mongoose in Nodejs to establish a database connection, and then use this database connection elsewhere in this application?Many foreign postings have been discussed, but the relative dullness of the country, the popularity of technology and the degree of enthusiasm for technology are also evident.Anyway .... Back to TopicThe following example shows you how to make a database connection and use it elsewhere in the progra

(vari = 0; I ) {Round.push (i); } //Leveraging caching functionTest (ITEM,CB) {query= Usermodel.find ({' username ': ' fredric101 ')}); Query.lean (); Query.exec (function(err, result) {CB (ERR); }); } //do not use cache functionTest_nocache (ITEM,CB) {query= Usermodel.find ({}). setoptions ({nocache:true}); Query.where ("username", "fredric101"); Query.exec (function(err, result) {CB (ERR); }); } async.mapser

operate the database. schemaCan be understood as a definition of the mongoose table structure (not only can define the structure and properties of the document, but also can define the document's instance method, static model method, composite index, etc.), each schema map to a collection in MongoDB, schema do not have the ability to manipulate the databaseDefine SchemaGrammarNew

1. Intro At the node end, the Express HTTP boot and Mongoose MongoDB connections are asynchronous, so it is encountered that when the Web site is opened, the database is not connected, causing a query error, or encountering the database already connected, but the HTTP service has failed to start. There is a more complicated use scenario: first, link the database, then middleware (such as query fixed configuration, such as site title, Administrator inf

Using mongoose allows us to better use the MongoDB database without having to write tedious business logic. Installation NPM Install Mongoose Initialize the use ofbefore using mongoose, you need to install node and MongoDB, which do not talk about node and MongoDB installation methods. var mongoose