Mongoose — Force collection name

问题:

I am trying to use mongoose to create a database and a collection in it. My code is:

var mongoose = require('mongoose');
    var db = mongoose.connect('mongodb://localhost/testdb');
    var Schema = mongoose.Schema;

    var UserInfo = new Schema({
    username : String,
    password : String 
    });

    mongoose.model('UserInfo', UserInfo);

    var user = db.model('UserInfo');


    var admin = new user();
    admin.username = "sss";
    admin.password = "ee";
    admin.save();

When I run this code, mongoose created collection named UserInfo instead of userinfo. How to force collection name in mongoose?

回答1:

This should do it

var UserInfo = new Schema({
  username : String,
  password : String 
}, { collection: 'userinfo' });

See this link from the Mongoose documentation for more information.

回答2:

If you are using mongoose 2.0.0, pass the collectionName as the third argument

mongoose.model('UserInfo', UserInfo, 'UserInfo');

回答3:

mongoose will add 's' to collection name by default. If you want to avoid that just pass third argument as name of collection

var mongoose = require('mongoose');
        var db = mongoose.connect('mongodb://localhost/testdb');
        var Schema = mongoose.Schema;

        var UserInfo = new Schema({
        username : String,
        password : String 
        });

      mongoose.model('UserInfo', UserInfo, 'UserInfo')

    tan = new user();
        admin.username = "sss";
        admin.password = "ee";
        admin.save();

回答4:

API structure of mongoose.model is this:

Mongoose#model(name, [schema], [collection], [skipInit])

What mongoose do is that, When no collection argument is passed, Mongoose produces a collection name by pluralizing the model name. If you don't like this behavior, either pass a collection name or set your schemas collection name option.

Example:

var schema = new Schema({ name: String }, { collection: 'actor' });

or

schema.set('collection', 'actor');

or

var collectionName = 'actor'
var M = mongoose.model('Actor', schema, collectionName);

回答5:

You need to set the collection name in your schema.

new Schema({...},{collection: 'userInfo'});

回答6:

Mongoose maintainer here. We recommend doing mongoose.model('UserInfo', UserInfo, 'UserInfo');, third arg to mongoose.model() is the collection name. Here's the relevant docs.

回答7:

Answer:

mongoose.model('UserInfo', UserInfo, 'userinfo'); //3rd parameter 'userinfo': as collection name

Better explanation with syntax:

Mongoose.model(name, [schema], [collection], [skipInit])

Parameters Explanation:

• 1st parameter - name model name
• 2nd parameter [schema] schema name
• 3rd parameter [collection] collection name (optional, induced from model name)
• 4th parameter [skipInit] whether to skip initialization (defaults to false)

回答8:

your model name : userInfo.js

in express route file or app.js

var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/testdb');

then in your userInfo.js

var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var UserInfo = new Schema({
 username : String,
 password : String 
});
module.exports = mongoose.model('UserInfo', UserInfo);