Question

I’m trying to create a transaction to create a new user.

From the ember-data.js src:

To create a new transaction, call the transaction() method of your
application’s DS.Store instance:

  var transaction = App.store.transaction();

I’m trying to create the transaction in a controller

App.CreateUserController = Ember.Controller.extend({
    addUser: function() {
        var transaction = App.store.transaction();
    }
});

but I’m getting

TypeError: App.store is undefined

I had this store defined

App.Store = DS.Store.extend({
  revision: 11,
  adapter: App.Adapter.create({})
});

it used a captial S so I tried changing App.store to App.Store and I get

TypeError: App.Store.transaction is not a function

If I change my App.Store to use a lowercase s I get

TypeError: store is undefined

Am I missing something?

Answer 1

You need to create a store instead of extending it. The convention is to use lowercase letters when you create an instance, so instead of App.Store, you should create a store and name it App.store

App.store = DS.Store.create({
  revision: 11,
  adapter: App.Adapter.create({})
});

Then you’ll be able to create a transaction

var transaction = App.store.transaction();