Discriminators is not working

app.js

const feathers = require('feathers');
const errorHandler = require('feathers-errors/handler');
const rest = require('feathers-rest');
const bodyParser = require('body-parser');
const mongoose = require('mongoose');
const service = require('feathers-mongoose');
const Post = require('./post');
const Model = require('./message-model');

// Tell mongoose to use native promises
// See http://mongoosejs.com/docs/promises.html
mongoose.Promise = global.Promise;

// Connect to your MongoDB instance(s)
mongoose.connect('mongodb://localhost:27017/feathers');

// Create a feathers instance.
const app = feathers()
  // Enable REST services
  .configure(rest())
  // Turn on JSON parser for REST services
  .use(bodyParser.json())
  // Turn on URL-encoded parser for REST services
  .use(bodyParser.urlencoded({ extended: true }))
  // Connect to the db, create and register a Feathers service.
  .use('/messages', service({
    Model,
    lean: true, // set to false if you want Mongoose documents returned
    paginate: {
      default: 2,
      max: 4
    }
  }))
  .use(errorHandler());

// Create a dummy Message
// app.service('messages').create({
//   text: 'Message created on server'
// }).then(function (message) {
//   console.log('Created message', message);
// });
var options = {
  discriminatorKey: '_type'
};

var TextPostSchema = new mongoose.Schema({
  text: { type: String, default: null }
}, options);

TextPostSchema.index({'updatedAt': -1, background: true});

// Note the use of `Post.discriminator` rather than `mongoose.discriminator`.
const TextPost = Post.discriminator('text', TextPostSchema);

// Using the discriminators option, let feathers know about any inherited models you may have
// for that service
app.use('/posts', service({
  Model: Post,
  discriminators: [TextPost]
}));

app.service('posts').create({
  text: 'Message created on server'
}).then(function (message) {
  console.log('Created message', message);
});

// Start the server.
const port = 3030;
app.listen(port, () => {
  console.log(`Feathers server listening on port ${port}`);
});

post.js

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

var options = {
  discriminatorKey: '_type'
};

var PostSchema = new Schema({
  createdAt: { type: Date, 'default': Date.now },
  updatedAt: { type: Date, 'default': Date.now }
}, options);

PostSchema.index({ 'updatedAt': -1, background: true });

var PostModel = mongoose.model('Post', PostSchema);

module.exports = PostModel;

message-model.js

const mongoose = require('mongoose');

const Schema = mongoose.Schema;
const MessageSchema = new Schema({
  text: {
    type: String,
    required: true
  }
});
const Model = mongoose.model('Message', MessageSchema);

module.exports = Model;

Results:

use feathers switched to db feathers show collections posts db.posts.find({}); { “_id” : ObjectId(“590b0de0b4c4db53d6fe27d5”), “updatedAt” : ISODate(“2017-05-04T11:17:52.947Z”), “createdAt” : ISODate(“2017-05-04T11:17:52.947Z”), “__v” : 0 }

Question is: I expected that, there is a field name “text” when i run db.posts.find({});. But i follow by guide line, it’s not work. Please help me

[victorm95]

I don’t know if you already figured this out, but you must also send the discriminatorKey (in this case _type).

app.service('posts').create({
  _type: 'text',
  text: 'Message created on server'
});

[marshallswain]

@dattq6 please wrap all code blocks in fences (trip back ticks). You can also get highlighting by doing ```js on the opening code block.

```js
// insert code here
```