CODEWITHSUNDEEP
ember.jsember-data
Mike
Mike

Reputation: 12819

Ember array data

What is the proper way to use an array in an Ember data model? Tom Dale points out that ember has "embedded hasOne relationships" in this comment, but I am not able to find any documentation or examples of this in action.

For example I have a Category data model like so that has a property called conditionValues

App.Category = DS.Model.extend({
  name: DS.attr('string'),
  conditionValues: //this is an array
});

I would like to populate this property with an array returned from my server like the one below. Each category has many condition values. How might one go about doing this?

[condition_values] => Array
    (
        [0] => Array
            (
                [DisplayName] => Brand New
            )

        [1] => Array
            (
                [DisplayName] => Like New
            )

        [2] => Array
            (
                [DisplayName] => Very Good
            )

        [3] => Array
            (
                [DisplayName] => Good
            )

        [4] => Array
            (
                [DisplayName] => Acceptable
            )

    )

Upvotes: 2

Views: 2209

Answers (1)

Teddy Zeenny
Teddy Zeenny

Reputation: 3971

Update Feb-26-2014

The code in this answer no longer works since Ember Data 1.0 beta and above.

You can handle that in two ways:

First way is to define a model called App.ConditionValues and then define a relationship:

App.Category = DS.Model.extend({
  //.. your attributes
  conditionValues: DS.hasMany('App.ConditionValues')
});

Second way it to create your own custom transform.

DS.RESTAdapter.registerTransform('array', {
  serialize: function(value) {
    if (Em.typeOf(value) === 'array') {
      return value;
    } else {
      return [];
    }
  },
  deserialize: function(value) {
    return value;
  }
});

and then in your model:

App.Category = DS.Model.extend({
  //.. your attributes
  conditionValues: DS.attr('array')
});

Upvotes: 4

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