DS#previous(resourceName, id)

Synchronously return the previous attributes of the item of the type specified by resourceName that has the primary key specified by id. This object represents the state of the item the last time it was saved via an async adapter.

resourceNamestringThe name of the resource to use. Unnecessary if using the resource directly.
idstring or numberThe primary key of item for which to retrieve the previous attributes.
var d = Document.get(5); // { author: 'John Anderson', id: 5 }

d.author = 'Sally';

d; // { author: 'Sally', id: 5 }

// You may have to do store.digest() first

// same as store.previous('document', 5)
Document.previous(5); // { author: 'John Anderson', id: 5 }


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