CODEWITHSUNDEEP
ember.jsember-data
TheIronDeveloper
TheIronDeveloper

Reputation: 3624

How do I set a dynamic model attribute in the fixture?

As the title describes, I am running into trouble making a dynamic attribute on the Fixture layer.

Here is an example model:

App.Pokeball = DS.Model.extend({
    name: DS.attr('string'),
    ballRate: DS.attr('number'),
    battleAttributes: DS.belongsTo('battleAttributes')
});

And my Fixture:

App.Pokeball.reopenClass({
    FIXTURES : [
        {
            id: 1,
            name: 'PokeBall',
            ballRate: 1
        },
        {
            id: 23,
            name: 'Dusk Ball',
            ballRate: function() {
                // Some logic that applies only model #23
                return 2;
            }.property('battleAttributes')
        }
    ]
});

I scoured online trying to find out the right way to do this, but have instead ran into a dead end. :(

Upvotes: 0

Views: 199

Answers (1)

Buck Doyle
Buck Doyle

Reputation: 6397

This is an invalid use of fixtures. They’re meant to represent JSON (or whatever) on the server that is passed to your application and turned into Ember Data models. JSON cannot represent the concept of a computed property, it’s for pure data.

I don’t understand your use case so I could be way off, it seems like you should use a computed property on the model instead:

App.Pokeball = DS.Model.extend({
  name: DS.attr('string'),
  ballRate: DS.attr('number'),
  battleAttributes: DS.belongsTo('battleAttributes'),

  adjustedBallRate: function() {
    if (this.get('battleAttributes.whateverPropertyCausesThisToChange') == 'special value') {
      return 2;
    }
    else {
      return this.get('ballRate');
    }
  }.property('battleAttributes.whateverPropertyCausesThisToChange')
});

Upvotes: 2

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