Learn the ins and outs of Ember.js with our comprehensive tutorial and guide. Discover solutions to common issues such as DS

Learning Ember has been a challenging experience for me. The guide I am using seems to be lacking important information that I need.

I keep encountering two specific errors:

Uncaught Error: Ember.State has been moved into a plugin: https://github.com/emberjs/ember-states

and,

Uncaught ReferenceError: DS is not defined

The structure of my scripts is as follows:

<script src="js/libs/jquery-1.10.2.js"></script>
<script src="js/libs/handlebars-1.1.2.js"></script>
<script src="js/libs/ember-1.3.0.js"></script>
<script src="js/libs/ember-data.js"></script>
<script src="js/libs/ember-states.js"></script>
<script src="js/app.js"></script>

The errors occur depending on whether I comment out `ember-data.js` or `ember-states.js`.

No matter what, I always end up with an error. Why is this happening?

javascriptember.js

Answer №1

I understand the struggle - I've been dealing with similar issues on my end as well, it's a bit rocky at the start.

Eventually, I decided to utilize yeoman and opted for the yeoman ember-generator for setting up the project and generating models/controllers/... It really does streamline the process, making things much more manageable.

The prescribed setup specifies the loading order of JavaScript files (version numbers were manually added).

   <script src="jquery/jquery.js"></script> <!-- v.20.03 -->
   <script src="handlebars/handlebars.runtime.js"></script> <!-- v 1.3.0 -->
   <script src="ember/ember.js"></script> <!-- v. 1.2.0 -->
   <script src="ember-data-shim/ember-data.js"></script> <!-- v. 1.0.0-beta.4 -->

Hopefully, this information proves to be helpful...

Answer №2

Did you remember to set your application adapter like this: 

App.ApplicationAdapter = DS.FixtureAdapter.extend()
? Also, did you make sure to rearrange the order of your script tags properly?

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script src="http://builds.emberjs.com/canary/ember-data.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/handlebars.js/1.0.0/handlebars.js">  </script>
<script src="http://builds.emberjs.com.s3.amazonaws.com/tags/v1.0.0/ember.js"></script>

I encountered an issue with ds.not being defined, but moving ember-data to the last position in the list resolved the problem.

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