Databases
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    <p>I found a cleaner approach for extracting meta information from the server response with ember-data.</p> <p>We have to tell the serializer which meta-information to expect (in this case pagination):</p> <pre><code> App.serializer = DS.RESTSerializer.create(); App.serializer.configure({ pagination: 'pagination' }); App.CustomAdapter = DS.RESTAdapter.extend({ serializer: App.serializer }); App.Store = DS.Store.extend({ adapter: 'App.CustomAdapter' }); </code></pre> <p>After that every time the server sends a meta-property with a pagination object this object will be added to the store's <code>TypeMaps</code> property for the requested Model-Class. </p> <p>For example with the following response:</p> <pre><code> { 'meta': {'pagination': { 'page': 1, 'total': 10 } }, 'posts':[ ... ] } </code></pre> <p>The <code>TypeMap</code> for the App.Post-Model would include the pagination object after the posts have loaded.</p> <p>You can't observe the TypeMaps-property of the store directly so I added an computed property to the PostsController to have access to the requests pagination meta information:</p> <pre><code> App.PostsController = Ember.ArrayController.extend({ pagination: function () { if (this.get('model.isLoaded')) { modelType = this.get('model.type'); this.get('store').typeMapFor(modelType).metadata.pagination } }.property('model.isLoaded') }); </code></pre> <p>I really don't think that's a great solution to the meta information problem but this is the best solution I was able to come up with yet with Ember-Data. Maybe this will be easier in the future.</p>
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    1. USMichael Klein
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    1. COOne gotcha I've found is that if a metadata value is not returned from the server or it is a blank string then Ember will keep the old value around. I had to resort to returning a string such as "none" instead of a blank value.
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      1. USKevin Ansfield
 

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