Mongoose: Generate Schema from existing data

Question

For example, I have user collection in db:

{'_id':0, 'name': 'Joe', 'score':[80, 33]}
{'_id':1, 'name': 'Moe', 'score':[90, 81]}
... ...

How can I read this data with existing format, which means, use it's existing schema without create a new one.

I read Mongoose doc and googled for a while but didn't find satisfied answer.

Answer 1

When using mongoose with an existing collection, you have to reference the collection in your mongoose schema. The way to do this is to add the name of the collection to your schema. So if your collection is in 'mongodb://localhost:27017/test' and called 'things', you would use:

~~~
const Schema = mongoose.Schema;
const ThingSchema = new Schema({
  name: {
    type: String
  }
});

const Model = mongoose.model('Thing', ThingSchema, 'things');
module.exports = Model;
~~~

Thanks to http://chrisflx.blogspot.fr/2014/04/nodejs-mongoose-with-preexisting-data.html?m=1

Answer 2

It will work if you make a model with the same schema.

var schema = new mongoose.Schema({ name: 'string', score: [] });
var user = mongoose.model('User', schema);

Edit:

Mongoose is an ODM, so you need a schema to create objects. If you need to run queries and get raw data from the database, I would stick with this library:

https://github.com/mongodb/node-mongodb-native