Transitioning to Show Only Complete Todos Edit Page
Next we'll update the application so a user can navigate to a url where only todos that have already been completed are displayed.
In index.html
convert the <a>
tag for 'Completed' todos into a Handlebars {{link-to}}
helper:
In js/router.js
update the router to recognize this new path and implement a matching route:
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Todos.Router.map(function () { this.resource('todos', { path: '/' }, function () { // additional child routes this.route('active'); this.route('completed'); }); }); // ... additional lines truncated for brevity ... Todos.TodosCompletedRoute = Ember.Route.extend({ model: function(){ return this.store.filter('todo', function (todo) { return todo.get('isCompleted'); }); }, renderTemplate: function(controller){ this.render('todos/index', {controller: controller}); } }); |
The model data for this route is the collection of todos whose isCompleted
property is true
. When a todo's isCompleted
property changes this collection will automatically update to add or remove the todo appropriately.
Normally transitioning into a new route changes the template rendered into the parent {{outlet}}
, but in this case we'd like to reuse the existing todos/index
template. We can accomplish this by implementing the renderTemplate
method and calling render
ourselves with the specific template and controller options.
Reload your web browser to ensure that there are no errors and the behavior described above occurs.