Ember JS Tutorial

Trying to create a button to show completed todos.

by Christopher Spears

HTML

<script src="http://builds.emberjs.com/tags/v1.3.0/ember.js"></script>
<script src="http://builds.emberjs.com/tags/v1.0.0-beta.5/ember-data.js"></script>
<script src="http://builds.handlebarsjs.com.s3.amazonaws.com/handlebars-1.0.0.js"></script>
<!DOCTYPE html>
  <body>
    <script type="text/x-handlebars" data-template-name="todos/index">
      <ul id="todo-list">
        {{#each itemController="todo"}}
          <li {{bind-attr class="isCompleted:completed isEditing:editing"}}>
            {{#if isEditing}}
              {{edit-todo class="edit" value=title focus-out="acceptChanges" insert-newline="acceptChanges"}}
            {{else}}
              {{input type="checkbox" checked=isCompleted class="toggle"}}
              <label {{action "editTodo" on="doubleClick"}}>{{title}}</label><button {{action "removeTodo"}} class="destroy"></button>
            {{/if}}
          </li>
        {{/each}}
      </ul>
    </script>

    <script type="text/x-handlebars" data-template-name="todos">
      <section id="todoapp">
        <header id="header">
          <h1>todos</h1>
          {{input type="text" id="new-todo" placeholder="What needs to be done?" 
              value=newTitle action="createTodo"}}
        </header>

        <section id="main">
          {{outlet}}
          <input type="checkbox" id="toggle-all">
        </section>

        <footer id="footer">
          <span id="todo-count">
            <strong>{{remaining}}</strong> {{inflection}} left
          </span>
          <ul id="filters">
            <li>
              {{#link-to "todos.index" activeClass="selected"}}All{{/link-to}}
            </li>
            <li>
              {{#link-to "todos.active" activeClass="selected"}}Active{{/link-to}}
            </li>
            <li>
              {{#link-to "todos.completed" activeClass="selected"}}Completed{{/link-to}}
            </li>
          </ul>

          {{#if hasCompleted}}
            <button id="clear-completed" {{action...

CSS

html,
body {
	margin: 0;
	padding: 0;
}

button {
	margin: 0;
	padding: 0;
	border: 0;
	background: none;
	font-size: 100%;
	vertical-align: baseline;
	font-family: inherit;
	color: inherit;
	-webkit-appearance: none;
	/*-moz-appearance: none;*/
	-ms-appearance: none;
	-o-appearance: none;
	appearance: none;
}

body {
	font: 14px 'Helvetica Neue', Helvetica, Arial, sans-serif;
	line-height: 1.4em;
	background: #eaeaea url('bg.png');
	color: #4d4d4d;
	width: 550px;
	margin: 0 auto;
	-webkit-font-smoothing: antialiased;
	-moz-font-smoothing: antialiased;
	-ms-font-smoothing: antialiased;
	-o-font-smoothing: antialiased;
	font-smoothing: antialiased;
}

#todoapp {
	background: #fff;
	background: rgba(255, 255, 255, 0.9);
	margin: 130px 0 40px 0;
	border: 1px solid #ccc;
	position: relative;
	border-top-left-radius: 2px;
	border-top-right-radius: 2px;
	box-shadow: 0 2px 6px 0 rgba(0, 0, 0, 0.2),
				0 25px 50px 0 rgba(0, 0, 0, 0.15);
}

#todoapp:before {
	content: '';
	border-left: 1px solid #f5d6d6;
	border-right: 1px solid #f5d6d6;
	width: 2px;
	position: absolute;
	top: 0;
	left: 40px;
	height: 100%;
}

#todoapp input::-webkit-input-placeholder {
	font-style: italic;
}

#todoapp input:-moz-placeholder {
	font-style: italic;
	color: #a9a9a9;
}

#todoapp h1 {
	position: absolute;
	top: -120px;
	width: 100%;
	font-size: 70px;
	font-weight: bold;
	text-align: center;
	color: #b3b3b3;
	color: rgba(255, 255, 255, 0.3);
	text-shadow: -1px -1px rgba(0, 0, 0, 0.2);
	-webkit-text-rendering: optimizeLegibility;
	-moz-text-rendering: optimizeLegibility;
	-ms-text-rendering: optimizeLegibility;
	-o-text-rendering: optimizeLegibility;
	text-rendering: optimizeLegibility;
}

#header {
	padding-top: 15px;
	border-radius: inherit;
}

#header:before {
	content: '';
	position: absolute;
	top: 0;
	right: 0;
	left: 0;
	height: 15px;
	z-index: 2;
	border-bottom: 1px solid #6c615c;
	background: #8d7d77;
	background: -webkit-gradient(linear, left top, left bottom, from(rgba(132, 110,...

JavaScript

window.Todos = Ember.Application.create();

Todos.ApplicationAdapter = DS.FixtureAdapter.extend();

Todos.Router.map(function() {
  this.resource('todos', { path: '/' }, function() {
    // additional child routes
    this.route('active');
    this.route('completed');
  });
});

Todos.TodosRoute = Ember.Route.extend({
  model: function() {
    return this.store.find('todo');
  }
});

Todos.TodosIndexRoute = Ember.Route.extend({
  model: function() {
    return this.modelFor('todos');
  }
});

Todos.TodosActiveRoute = 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});
  }
});


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});
  }
});

Todos.EditTodoView = Ember.TextField.extend({
  didInsertElement: function() {
    this.$().focus();
  }
});

Ember.Handlebars.helper('edit-todo', Todos.EditTodoView);

Todos.Todo = DS.Model.extend({
  title: DS.attr('string'),
  isCompleted: DS.attr('boolean')
});

Todos.Todo.FIXTURES = [
 {
   id: 1,
   title: 'Learn Ember.js',
   isCompleted: true
 },
 {
   id: 2,
   title: '...',
   isCompleted: false
 },
 {
   id: 3,
   title: 'Profit!',
   isCompleted: false
 }
];

Todos.TodosController = Ember.ArrayController.extend({
  actions: {

    createTodo: function() {
      // Get the todo title set by the "New Todo" text field
      var title = this.get('newTitle');
      if (!title.trim()) { return; }

      // Create the new Todo model
      var todo = this.store.createRecord('todo', {
        title: title,
        isCompleted: false
      });

      // Clear the "New Todo" text field
      this.set('newTitle', '');

 ...