/dependency-examples/backbone_require/js/collections/todos.js
JavaScript | 43 lines | 29 code | 7 blank | 7 comment | 1 complexity | 9cc86bccfb7002378921271efea7c82c MD5 | raw file
- define([
- 'underscore',
- 'backbone',
- 'lib/backbone/localstorage',
- 'models/todo'
- ], function( _, Backbone, Store, Todo ) {
- var TodosCollection = Backbone.Collection.extend({
- // Reference to this collection's model.
- model: Todo,
- // Save all of the todo items under the `"todos"` namespace.
- localStorage: new Store('todos-backbone'),
- // Filter down the list of all todo items that are finished.
- completed: function() {
- return this.filter(function( todo ) {
- return todo.get('completed');
- });
- },
- // Filter down the list to only todo items that are still not finished.
- remaining: function() {
- return this.without.apply( this, this.completed() );
- },
- // We keep the Todos in sequential order, despite being saved by unordered
- // GUID in the database. This generates the next order number for new items.
- nextOrder: function() {
- if ( !this.length ) {
- return 1;
- }
- return this.last().get('order') + 1;
- },
- // Todos are sorted by their original insertion order.
- comparator: function( todo ) {
- return todo.get('order');
- }
- });
- return new TodosCollection();
- });