![]() ![]() Calling fetch on an instance of that collection would then fetch the data and that would be sufficient.ĭealing with the second scenario is somewhat more complex for several reasons: It would require defining a Collection constructor that has a url property. You might have a feed of data that is constantly updating and thus your collection periodically check for updates.ĭealing with the first scenario is quite simple.You might have a finite set of data that you need to fetch once for your application.When your collection is actually responsible for communicating with an API endpoint to fetch its models, there are several types of data that you might be interested in fetching. In this situation we define a url property on the collection and fetch it when we’re ready for the data. By fetching a group of models using a single request made by the collection object itself.In this situation, the collection is not responsible for any interaction with a server. By individually fetching or creating models and then adding them to the collection.Watch your console for errors indicating so.Ī Backbone collection can be filled in several ways: We’ve updated this post to utilize the GitHub API instead which still allows a minimal amount of unauthenticated queries (60 an hour.) The linked jsFiddles have been updated to reflect this but you may encounter the rate limiting rather fast. That API has since changed to not allow unauthenticated queries. A view's events hash may now also contain direct function values as well as the string names of existing view methods.Updated on August 20th, 2015 – This blog post was originally written to use the Twitter public API.The comparator function is also now bound by default to the collection - so you can refer to this within it. A Backbone collection's comparator function may now behave either like a sortBy (pass a function that takes a single argument), or like a sort (pass a comparator function that expects two arguments).bind and unbind have been renamed to on and off for clarity, following jQuery's lead.Added a "sync" event, which triggers whenever a model's state has been successfully synced with the server (create, save, destroy).Multiple models with the same id are no longer allowed in a single collection.When you don't know the key in advance, you may now call t(key, value) as well as save.For example: model.on("change:name change:age". You can now bind and trigger multiple spaced-delimited events at once.It will both set view.el and view.$el correctly, as well as re-delegating events on the new DOM element. Two new properties on views: $el - a cached jQuery (or Zepto) reference to the view's element, and setElement, which should be used instead of manually setting a view's el.If you'd like to continue using "reset", pass as an option if you'd like them to wait for a successful server response to proceed. It's now the default updating mechanism after a fetch. Renamed Collection's "update" to set, for parallelism with the similar t(), and contrast with reset.Many tweaks, optimizations and bugfixes relating to Backbone 1.0, including URL overrides, mutation of options, bulk ordering, trailing slashes, edge-case listener leaks, nested model parsing.On the other hand, parse is now an excellent place to extract and vivify incoming nested JSON into associated submodels.You are no longer permitted to change the id of your model during parse. ![]() First the model in question, then the error object, then options.
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