mongoose pokemon

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

1 Installing the Moogoose module, attaching the--save parameter add the package information to the Package.json fileNPM Install--save Moogoose2 Load the Moogoose module and connect to the databasevar mongoose = require (' Mongoose '); // Mongoose.connect (' Mongodb://mongod address IP (ipdress)/database name to be connected (databasename) '); Mongoose.connect (' mongodb://localhost/news ');3 Modeling (struc

Using MongoDB in node. JS is a mongoose.Suppose there is a definition of the following mongoose schemas:var New Mongoose. Schema ({ biz:string, name:string, tradetype:string, totalfee:number, transactionid:string, createtime: { type:date, default: Date.now }, updatetime: { Type:date, default: Date.now }}, { false});We want to save the model data with

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 ("

All calls to Nodejs are almost completely asynchronous, and all IO operations are known by callback functions. If an asynchronous call relies on another asynchronous call, it is possible to fall into the legendary callback hell if there is no promise.Bluebird implements the transformation of asynchronous callbacks into chained notation, and extends the APIs such as catch, finally, bind, and so on, which can help us focus on the error of each query.The information about promise and Bluebird found

1. IntroThe Mongoose schema supports data in object format, often with a bunch of potentially indefinite metadata or configuration information in the field. If the user table has 3 fields: Email: User Email Password: User password Meta: User meta information, because currently uncertain, the definition of type object, you can put the user nickname, age, QQ number, login registration time and so on To manipulate the Meta field design to the field o

Mongoose implements DBRef to search for all subclass information, mongoosedbref Product table var Mongoose = require('mongoose');var Schema = Mongoose.Schema;var Product = new Schema({ image : { type : String }, description : { type : String }, price : { type : Number,

The convenience of Mongoose operation set is indeed not general, but it is mainly because you design the set in reference, however, it is a little troublesome for Mongoose to limit and identify the combination of sets when using ref to associate a set. But it doesn't matter. It's easy to use. 1. usage of the ref associated document in mongoose 2. query related

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Tags: nodejs red own creat mongod NEC Strong router bodyMongoDB Download/installMongoose NPM Install--save MongooseMongoose Database connectionConst MONGOOSE = require (' Mongoose ')Const Db_rul = ' MONGODB://LOCALHOST:27017/KOA2 'Mongoose.connect (Db_rul, function (err) {if (err) {Console.warn (' Database connection failed: ' +err)}else{console.log (' database successfully connected to: ' +db_rul )}}) Modu

Nodejs, who started this week in Monday, has been studying for 5 days, and it's been a rookie period, and I've seen a lot of unexpected pits and lots of nodejs. Their content is too old for 2011-2013 years. Many statements module code framework is not used in a lot of pits through my Kind of pits pit pit finally made a very simple and practical express new version of the +mongoose and additions and deletions to the novice is very helpful code is 2015.

A problem that can be easily encountered when querying all the results of a document using Mongoose Articlecontents.getall = function (name, callback) { var query = {}; if (name) { query.name = name; } Articlecontentsmodel.find (///four parameters, where the second cannot be omitted (the second parameter is the result set to query out which document structure is included) Query,null, { so

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

Data Relationship mapping: ORMO:objectR:relationM:mappingThe operation of the database is the equivalent of manipulating the database by encapsulating it into the object and manipulating the object.Installation:NPM Install MongooseUsage examples:Const Mongoose=require (' Mongoose ')1. Connect to the databaseMongoose.connect (' mongodb://127.0.0.1:27017/edu ')2. Design the model structureConst Catschema=

There is no join feature in MongoDB, so joins and associated queries cannot be used with joins, the populate method is encapsulated in mongoose, and the field (property) can be specified as a reference to another schema when defining a schema. When querying a document, you can use the Populate method to find the specified field value for another document or document that is associated by referencing the Schema and ID. Here is a simple chestnut:"Scene"

Plug - insSchemas are pluggable, that is, they can apply pre-packaged capabilities to extend their functionality. This is a very powerful feature.Suppose we have several collection in our database, to add the last-modified functionality to them. It's easy to use plugins. Just create a plug-in and apply it to each schema://Lastmod.jsModule.exports = exports =functionlastmodifiedplugin (schema, options) {Schema.add ({lastmod:date}) Schema.pre (' Save ',function(next) { This. Lastmod =NewDate Next

Models is a constructor that is compiled from the Schema definition. Examples of these model represent documents that can be stored and retrieved from the database. All document creation and retrieval in the database is handled by these model.1. Compile the first modelvar New Mongoose. Schema ({name: ' string ', Size: ' String ' }); var Tank = Mongoose.model (' Tank ', schema);The first parameter is the singular name of the model corresponding to the

Tags: cno mongodb no pretty expr established name mode TPS Operate with MongoDB via Mongoose. The mongoose is created by the model to create the corresponding collection in MongoDB, so that you pass the following code: mongoose.model(‘User‘, UserSchema); When creating a collection in the corresponding database, the first reaction will certainly infer that a ' User ' collection, but the fact is completely di