![]() Has the model changed since its last set? If an attribute is passed, returns true Has this model been saved to the server yet? If the model does not yet have an id, it is considered to be new. Returns a new instance of the model with identical attributes. Returns the model’s data by passing through the response object and represents the data in the JSON format. Returns the relative URL where the model’s resource would be located on the server.Įnables the url function by using the model id to generate the URL. The value returned by validate during the last failed validation. If the input is invalid, it returns a specified error message or if the input is valid, it doesn’t specify anything and simply displays the result. Saves the data of the model by delegating to sync() method which reads and saves the model every time when a Backbone calls it.ĭestroys or removes the model from the server by using the Backbone.sync method which delegates the HTTP “delete” request. Merges the model’s state with attributes fetched from the server by delegating to Backbone.sync. Uses Backbone.sync to persist the state of a model to the server. Returns a copy of the attributes as an object for JSON stringification. The defaults hash (or function) can be used to specify the default attributes for your model. If you set the id in the attributes hash, it will be copied onto the model as a direct property.ĭefines a model’s unique identifier which contains the name of the member of the class which will be used as id.Ī special property of models, the cid or client id is a unique identifier automatically assigned to all models when they’re first created.Ĭhanges all the attributes that have changed after setting the attributes using the set() method. Removes all attributes from the model, including the idĪ special property of models, the id is an arbitrary string (integer id or UUID). Remove an attribute by deleting it from the internal attributes hash. If the attribute is set to a non-null or non-undefined value. It is like the get function, but returns the HTML-escaped version of a model’s attribute. Set a hash of attributes (one or many) on the model. Get the current value of an attribute from the model. When a model instance is created, the class’s constructor gets called and it is invoked by defining the initialize function when the model is created. If you define a preinitialize method, it will be invoked when the Model is first created, before any instantiation logic is run for the Model. To create a Model class of your own, you extend Backbone.Model and provide instance properties, as well as optional classProperties to be attached directly to the constructor function.įor use with models as ES classes. “all” - this special event fires for any triggered event, passing the event name as the first argument followed by all trigger arguments.ī(properties, ).“route” (router, route, params) - Fired by history when any route has been matched.“route” (route, params) - Fired by the router when any route has been matched.“route:” (params) - Fired by the router when a specific route is matched.“invalid” (model, error, options) - when a model’s validation fails on the client.“error” (model_or_collection, xhr, options) - when a model’s or collection’s request to the server has failed.“sync” (model_or_collection, response, options) - when a model or collection has been successfully synced with the server.“request” (model_or_collection, xhr, options) - when a model or collection has started a request to the server.“destroy” (model, collection, options) - when a model is destroyed.“change:” (model, value, options) - when a specific attribute has been updated.“change” (model, options) - when a model’s attributes have changed.“sort” (collection, options) - when the collection has been re-sorted.“reset” (collection, options) - when the collection’s entire contents have been reset.“update” (collection, options) - single event triggered after any number of models have been added, removed or changed in a collection.“remove” (model, collection, options) - when a model is removed from a collection.“add” (model, collection, options) - when a model is added to a collection.It causes the listenTo occur only once before the callback function is being removed. Object.listenToOnce(other, event, callback) Tell an object to stop listening to events. Tell an object to listen to a particular event on an other object. It extends the backbone.Model class while creating your own backbone Model. Trigger callbacks for the given event, or space-delimited list of events. Remove a previously-bound callback function from an object. ![]() The callback will be invoked whenever the event is fired.
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