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2012-12-14T18:21:47.293
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Here is an example of creating a custom array type in Ember-Data (version 10): <pre><code>DS.JSONTransforms.array = # If the outgoing json is already a valid javascript array # then pass it through untouched. In all other cases, replace it # with an empty array. This means null or undefined values # automatically become empty arrays when serializing this type. serialize: (jsonData)-> if Em.typeOf(jsonData) is 'array' then jsonData else [] # If the incoming data is a javascript array, pass it through. # If it is a string, then coerce it into an array by splitting # it on commas and trimming whitespace on each element. # Otherwise pass back an empty array. This has the effect of # turning all other data types (including nulls and undefined # values) into empty arrays. deserialize: (externalData)-> switch Em.typeOf(externalData) when 'array' then return externalData when 'string' then return externalData.split(',').map((item)-> jQuery.trim(item)) else return [] </code></pre> Now you can use the custom type in a model attribute: <pre><code>App.CalenderWeek = DS.Model.extend selected_days = DS.attr('array') </code></pre> And now when you fetch a record with: <pre><code>App.CalendarWeek.find(1) </code></pre> both of these incoming json records will deserialize correctly into an Array: <pre><code>{ selected_days: ['Monday', 'Tuesday', 'Saturday'] } </code></pre> or <pre><code>{ selected_days: 'Monday, Tuesday, Saturday' } </code></pre>
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1. POHow to represent arrays within ember-data models?
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1. USMayank Patel
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1. COThis doesn't set the isDirty flag on the model when I change selected_days. Is this a known issue?
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