Ember AppKit and embedded object using ember data

Question

I'm trying to create a model having embedded data using Ember AppKit and the ES6 syntax but I'm a bit confused.

I found this article explaining the way to embedded data into a model: https://github.com/emberjs/data/blob/master/TRANSITION.md#rest-adapter-and-serializer-configuration

But I don't know how to apply this to my scope. I should add the "map" into the adapter to specify that my attribute will be embedded, but I don't know how.

This is what I have:

adapters/item.js

export default DS.RESTAdapter.extend({
   namespace: 'path/to/api/json'
});

How to add the map here??

models/item.js

var attr = DS.attr,
    belongsTo = DS.belongsTo;

export default DS.Model.extend({
    name: attr('string')
    width: belongsTo('valueUnit'),
    height: belongsTo('valueUnit'),
    weight: belongsTo('valueUnit')
});

I think here it should look something like this:

export default DS.Model.extend({
    name: attr('string')
    width: belongsTo('valueUnit', {embedded: 'always'}),
    height: belongsTo('valueUnit', {embedded: 'always'}),
    weight: belongsTo('valueUnit', {embedded: 'always'})
});

models/value-unit.js

var attr = DS.attr;

export default DS.Model.extend({
    value: attr('number')
    unit: attr('string')
});

And this is what I get from the server:

{
  "items": [
    {
      "id": "123456789",
      "width": {
        "value": 150,
        "unit": "m"
      },
      "height": {
        "value": 5.3,
        "unit": "ft"
      },
      "weight": {
        "value": 12,
        "unit": "lb"
      }
    }
  ]
}

Thanks

Perhaps this is just a sample problem, but there is no need to treat valueUnit as a model. That will bring a lot of overhead and complexity. It's not a model--it's just a complex datatype. If you want more control over it or help getting to and fro, you can define a transform so you can define it as width: DS.attr('valueUnit'). — user663031

ViRa ViRa · Accepted Answer · 2014-07-31T05:01:45

You will have to write a serializer for item model. Here is the guide on how to write the serializer.

(In your case, you are extracting the data from items array. So implement the extractArray function.)

Hope it helps!

Ember AppKit and embedded object using ember data

1 Answers