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POHow to represent arrays within ember-data models?
 

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  1. POHow to represent arrays within ember-data models?
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    <p>Is it necessary to use <code>DS.hasMany</code> pointing to a <code>DS.Model</code> when a model contains an array? Even if the array elements are not really models (no IDs or endpoints of their own)? Is there a better way?</p> <p>I am using <code>DS.hasMany</code>, but my extended <code>DS.RESTAdapter</code> is throwing me a 404 trying to access the model, even though I'm never calling <code>find</code> on it, and <code>hasMany</code> is called with <code>{ embedded: true }</code>. I am seeing this error for the first time (apparently in connection with this model, since it goes away without it):</p> <pre><code>Uncaught Error: assertion failed: Emptying a view in the inBuffer state is not allowed and should not happen under normal circumstances. Most likely there is a bug in your application. This may be due to excessive property change notifications. ember-latest.js:43 </code></pre> <p>What does this mean and what might be causing it?</p> <p>Here's the stack trace:</p> <pre><code>Ember.assert ember-latest.js:43 Ember.View.states.inBuffer.empty ember-latest.js:13644 Ember.View.Ember.Object.extend.invokeForState ember-latest.js:12257 Ember.CollectionView.Ember.ContainerView.extend.arrayWillChange ember-latest.js:14477 invokeAction ember-latest.js:3193 iterateSet ember-latest.js:3175 sendEvent ember-latest.js:3323 Ember.Array.Ember.Mixin.create.arrayContentWillChange ember-latest.js:6963 Ember.ArrayProxy.Ember.Object.extend.arrangedContentArrayWillChange ember-latest.js:9281 Ember.ArrayProxy.Ember.Object.extend._arrangedContentWillChange ember-latest.js:9235 invokeAction ember-latest.js:3193 iterateSet ember-latest.js:3175 sendEvent ember-latest.js:3323 notifyObservers ember-latest.js:1872 Ember.notifyBeforeObservers ember-latest.js:2016 propertyWillChange ember-latest.js:2594 iterDeps ember-latest.js:2077 dependentKeysWillChange ember-latest.js:2092 propertyWillChange ember-latest.js:2592 set ember-latest.js:1416 DS.Model.Ember.Object.extend.dataDidChange ember-data-latest.js:3145 Map.forEach ember-latest.js:1273 OrderedSet.forEach ember-latest.js:1145 Map.forEach ember-latest.js:1271 DS.Model.Ember.Object.extend.dataDidChange ember-data-latest.js:3128 invokeAction ember-latest.js:3193 iterateSet ember-latest.js:3175 sendEvent ember-latest.js:3323 notifyObservers ember-latest.js:1872 Ember.notifyObservers ember-latest.js:1999 propertyDidChange ember-latest.js:2632 Ember.Observable.Ember.Mixin.create.propertyDidChange ember-latest.js:7917 Ember.Observable.Ember.Mixin.create.notifyPropertyChange ember-latest.js:7930 didChangeData ember-data-latest.js:2053 Ember.StateManager.Ember.State.extend.sendRecursively ember-latest.js:15446 Ember.StateManager.Ember.State.extend.send ember-latest.js:15431 DS.Model.Ember.Object.extend.send ember-data-latest.js:3058 DS.Store.Ember.Object.extend.load ember-data-latest.js:1737 DS.Store.Ember.Object.extend.loadMany ember-data-latest.js:1763 embeddedFindRecord ember-data-latest.js:3434 hasAssociation ember-data-latest.js:3459 ComputedPropertyPrototype.get ember-latest.js:2968 get ember-latest.js:1362 getPath ember-latest.js:1484 get ember-latest.js:1355 getWithGlobals ember-latest.js:4041 Binding.connect ember-latest.js:4140 connectBindings ember-latest.js:4600 finishPartial ember-latest.js:4610 Class ember-latest.js:8315 Ember.Mixin.create.create ember-latest.js:8457 Ember.View.Ember.Object.extend.createChildView ember-latest.js:13179 Ember.View.states.inBuffer.appendChild ember-latest.js:13622 Ember.View.Ember.Object.extend.invokeForState ember-latest.js:12239 Ember.View.Ember.Object.extend.appendChild ember-latest.js:13058 EmberHandlebars.ViewHelper.Ember.Object.create.helper ember-latest.js:18687 (anonymous function) ember-latest.js:18844 (anonymous function) ember-latest.js:19043 (anonymous function) ember-latest.js:19208 (anonymous function) (anonymous function) handlebars-1.0.0.beta.6.js:1512 Ember.View.Ember.Object.extend.render ember-latest.js:12223 Ember.View.Ember.Object.extend.renderToBuffer ember-latest.js:12872 Ember.View.states.inBuffer.appendChild ember-latest.js:13625 Ember.View.Ember.Object.extend.invokeForState ember-latest.js:12239 Ember.View.Ember.Object.extend.appendChild ember-latest.js:13058 EmberHandlebars.ViewHelper.Ember.Object.create.helper ember-latest.js:18687 (anonymous function) ember-latest.js:18844 program2 (anonymous function) handlebars-1.0.0.beta.6.js:1529 Ember.View.Ember.Object.extend.render ember-latest.js:12223 Ember._HandlebarsBoundView.Ember._MetamorphView.extend.render ember-latest.js:18075 Ember.wrap.newFunc ember-latest.js:949 Ember.View.Ember.Object.extend.renderToBuffer ember-latest.js:12872 Ember.View.states.inBuffer.appendChild ember-latest.js:13625 Ember.View.Ember.Object.extend.invokeForState ember-latest.js:12239 Ember.View.Ember.Object.extend.appendChild ember-latest.js:13058 bind ember-latest.js:18129 (anonymous function) ember-latest.js:18199 (anonymous function) ember-latest.js:18271 program1 (anonymous function) handlebars-1.0.0.beta.6.js:1529 Ember.View.Ember.Object.extend.render ember-latest.js:12223 Ember.View.Ember.Object.extend.renderToBuffer ember-latest.js:12872 Ember.ContainerView.Ember.View.extend.render ember-latest.js:14078 Ember.View.Ember.Object.extend.forEachChildView ember-latest.js:12486 Ember.ContainerView.Ember.View.extend.render ember-latest.js:14077 Ember.wrap.newFunc ember-latest.js:949 Ember.View.Ember.Object.extend.renderToBuffer ember-latest.js:12872 Ember.View.states.inBuffer.appendChild ember-latest.js:13625 Ember.View.Ember.Object.extend.invokeForState ember-latest.js:12239 Ember.View.Ember.Object.extend.appendChild ember-latest.js:13058 EmberHandlebars.ViewHelper.Ember.Object.create.helper ember-latest.js:18687 (anonymous function) ember-latest.js:18844 (anonymous function) ember-latest.js:19043 (anonymous function) ember-latest.js:19208 (anonymous function) (anonymous function) handlebars-1.0.0.beta.6.js:1512 Ember.View.Ember.Object.extend.render ember-latest.js:12223 Ember.View.Ember.Object.extend.renderToBuffer ember-latest.js:12872 Ember.ContainerView.Ember.View.extend.render ember-latest.js:14078 Ember.View.Ember.Object.extend.forEachChildView ember-latest.js:12486 Ember.ContainerView.Ember.View.extend.render ember-latest.js:14077 Ember.wrap.newFunc ember-latest.js:949 Ember.View.Ember.Object.extend.renderToBuffer ember-latest.js:12872 Ember.View.states.inBuffer.appendChild ember-latest.js:13625 Ember.View.Ember.Object.extend.invokeForState ember-latest.js:12257 Ember.View.Ember.Object.extend.appendChild ember-latest.js:13058 EmberHandlebars.ViewHelper.Ember.Object.create.helper ember-latest.js:18687 (anonymous function) ember-latest.js:18844 (anonymous function) ember-latest.js:19624 (anonymous function) ember-latest.js:18167 (anonymous function) (anonymous function) handlebars-1.0.0.beta.6.js:1512 Ember.View.Ember.Object.extend.render ember-latest.js:12223 Ember.View.Ember.Object.extend.renderToBuffer ember-latest.js:12872 Ember.View.Ember.Object.extend.createElement ember-latest.js:12669 Ember.View.states.preRender.insertElement ember-latest.js:13558 Ember.View.Ember.Object.extend.invokeForState ember-latest.js:12257 invoke ember-latest.js:3428 iter ember-latest.js:3475 RunLoop.flush ember-latest.js:3531 RunLoop.end ember-latest.js:3447 Ember.run.end ember-latest.js:3639 autorun ember-latest.js:3705 </code></pre> <p>Thanks for any help.</p> <p><strong>Update:</strong> <a href="http://jsfiddle.net/pauldechov/JBmuA/">This fiddle</a> works (with example from <a href="https://github.com/emberjs/data/blob/master/README.md">docs</a>), but how could those objects be represented if the tags aren't real models (i.e. <a href="http://jsfiddle.net/pauldechov/JBmuA/1/">don't have IDs</a>)?</p>
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    1. COdoes simply define a usual array property not work ?
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      1. USsly7_7
    2. COI updated with a fiddle. How would I do that?
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      1. USdechov
    3. COHum, I think if you want your tags to be persisted, you have to describe them as a DS.Model. If not, then just declare an usual array in the Person model. Finally, perhaps I don't understand what you want...
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