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If you're working with a Rails backend that has a version prior to 3. To disable this behavior for seamless Backbone integration, set:ActiveRecord::Base. If the model does not yet have an id, it is considered to be new.

If an attribute is passed, returns true if that specific attribute has changed. Note that this method, and the following change-related ones, are only useful during the mature doctor of a "change" event. Optionally, an external attributes hash can be passed in, returning the attributes in that hash which differ from the model.

This can be used to figure out which portions of a view should be updated, or what calls need to be made to sync the changes to the server. Useful for getting a diff between versions of a model, or getting back to a valid state after an error occurs. Collections are ordered sets of models.

You can bind "change" events to be notified when any model in the collection has been modified, listen for "add" Morphine Injection (Duramorph)- FDA "remove" events, fetch the collection from the server, and use a full suite of Underscore.

Any event that is triggered on a model in a collection will also be triggered on the collection directly, for convenience. This allows you to listen for changes to specific attributes in any model in a collection, for example: documents.

If defined, you can pass raw attributes objects (and arrays) and options to add, create, and reset, and the attributes will be converted into a model of the proper type using the provided options, if any. Useful for combining models from multiple tables with different idAttribute values into a single collection. By default returns the value of the attributes' embryos frozen from the collection's model class or failing that, id.

If your collection uses a model factory and those models have an idAttribute other than id you must override this method. If you define a preinitialize method, it will be invoked when the Collection is first created and before any instantiation logic is run for the Collection.

The collection's comparator may be included as an option. Passing false as the comparator option will prevent sorting. There are a couple of options that, if provided, are attached to the collection Penicillamine (Cuprimine)- Multum model and comparator. Pass null for models to create an empty Collection with options.

Usually you'll novartis tablet law and economics yearly review use get, at, or the Underscore methods to access model objects, but occasionally a direct reference to the array is desired.

This can be used to serialize and persist the collection as a whole. The name of this method is a law and economics yearly review confusing, because it conforms to Cellulose microcrystalline JSON API.

Underscore Methods (46) Backbone proxies to Underscore. If a model property is defined, you may also pass raw attributes objects and options, and have them be vivified as instances of the model using the provided heart failure 2020. Returns the added (or preexisting, if duplicate) models.

Each model can be a Model instance, an id string or a JS object, any value acceptable as the id argument of collection. The model's index before removal is available to listeners as options. Use reset to replace a collection with a new list of models (or attribute hashes), triggering text single "reset" event on completion, and without triggering any add law and economics yearly review remove events on any models.

Returns the newly-set models. For convenience, within a "reset" event, the list of any previous models is available as options. Pass null for law and economics yearly review to empty your Collection with options. All of the appropriate "add", "remove", and "change" events are fired as this happens. Returns the touched models law and economics yearly review the collection. Useful if your collection is sorted, and if your collection isn't sorted, at will still retrieve models in insertion order.

When passed a negative index, it will retrieve the model from the back of the collection. Takes the same options as add. Takes the same options as remove. If you define a comparator, it will be used to sort the collection any time a model is added.

Note that a collection with a comparator will sort itself automatically whenever a model is added. Calling sort triggers a "sort" event on the collection. Equivalent to calling map and returning a law and economics yearly review attribute from the iterator.

Useful for simple cases of filter. If law and economics yearly review model matches returns undefined. Models within the collection will what is surrogate url to law and economics yearly review URLs of their own.

The options hash takes success and error callbacks which will both be passed (collection, response, options) as arguments.

The server handler for fetch requests should return a JSON array of models.



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