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POBetter solution for nested Backbone.js collections
 

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    <p>Many of my Backbone models often deal with nested models and collections, so far I'm using a combination of <code>defaults</code>, <code>parse</code> and <code>toJSON</code> manually to achieve nesting:</p> <pre><code>ACME.Supplier = Backbone.Model.extend({ defaults: function() { return { contacts: new ACME.Contacts(), tags: new ACME.Tags(), attachments: new ACME.Attachments() }; }, parse: function(res) { if (res.contacts) res.contacts = new ACME.Contacts(res.contacts); if (res.tags) res.tags = new ACME.Tags(res.tags); if (res.attachments) res.attachments = new ACME.Attachments(res.attachments); return res; } }); ACME.Tag = Backbone.Model.extend({ toJSON: function() { return _.pick(this.attributes, 'id', 'name', 'type'); } }); </code></pre> <p>I've looked at a few plugins out there that basically does the same as above but with a lot less control and more boilerplate, so I'm wondering if anyone has a more elegant solution to this common Backbone.js problem.</p> <hr> <p><strong>Edit:</strong> I ended up with the following approach:</p> <pre><code>ACME.Supplier = Backbone.Model.extend({ initialize: function(options) { this.tags = new ACME.Tags(options.tags); }, parse: function(res) { res.tags &amp;&amp; this.tags.reset(res.tags); return res; } }); ACME.Tag = Backbone.Model.extend({ toJSON: function() { return _.pick(this.attributes, 'id', 'name', 'type'); } }); </code></pre> <p>It is worth noting that later I discovered that you'll need to pass nested model/collection data from the constructor into the constructor of the nested model via the <code>options</code> object.</p>
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