How do I fetch a single model in Backbone?

Question

I have a Clock model in Backbone:

var Clock = Backbone.Model.extend({}); 

I'm trying to get an instance of that that has the latest information from /clocks/123. Some things I've tried:

a "class"-level method

Clock.fetch(123) // TypeError: Object function (){ ... } has no method 'fetch' 

creating an instance and then calling fetch on it:

c = new Clock({id: 123}) c.fetch() // Error: A 'url' property or function must be specified 

a collection

I tried creating an AllClocks collection resource (even though I have no use for such a thing on the page):

var AllClocks = Backbone.Collection.extend({   model: Clock,   url: '/clocks/' }); var allClocks = new AllClocks(); allClocks.fetch(123); // returns everything from /clocks/ 

How do I just get one API-backed Clock?

Answer 1

Try specifying urlRoot in the model:

From the docs:

var Book = Backbone.Model.extend({urlRoot : '/books'}); var solaris = new Book({id: "1083-lem-solaris"}); solaris.fetch();