EmberJS - Models

Model is a class that extends the functionapty of the Ember Data. When a user refreshes the page, the contents of page should be represented by a model. In Ember.js, every route has an associated model. The model helps to improve the performance of apppcation. The Ember Data manipulates the stored data in the server and also works easily with streaming APIs pke socket.io and Firebase or WebSockets.

Core Concepts

Store

Models

Records

Adapter

Caching

Store

The store is a central repository and cache of all records available in an apppcation. The route and controllers can access the stored data of your apppcation. The DS.Store is created automatically to share the data among the entire object.

import Ember from  ember ;

export default Ember.Route.extend ({
   model() {
      return this.store.find();
   }
});

Models

Model is a class that extends the functionapty of the Ember Data, which specifies relationships with other objects. When a user refreshes the page, the contents of page should be represented by a model.

import DS from  ember-data ;

export default DS.Model.extend ({
   owner: DS.attr(),
   city: DS.attr()
});

Records

A record is an instance of a model that includes the information, which is loaded from a server and you can identify the record by its model type and ID.

//It finds the record of type  person  and an  ID  of 1
this.get( store ).findRecord( person , 1); // => { id: 1, name:  steve-buscemi  }

Adapter

An adapter is an object that is responsible for translating requested records from Ember into appropriate calls to particular server backend. For instance, if you want to find a person with ID of 1, then Ember will load the URL by using HTTP as /person/1.

Caching

The records can be cached automatically by the store and returns the same object instance when you load the records from the server for the second time. This improves the performance of your apppcation and displays the apppcation UI to the user as fast as possible.

The following table psts down the details about models −