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EmberJS - object proxying is deprecated - accessing property of a controller in template

I'm trying to understand certain peculiarity.
Setting xxx property and iterating #each in one controller works, while seemingly same operation with yyy #each doesn't...
I'm including highlights of the code and the runnable code snippet:
App.IndexController = Ember.Controller.extend({
xxx : [{name:"a"}, {name:"b"}], // this works just fine
});
{{#each item in xxx}}
<li>{{item.name}}</li>
{{/each}}
App.ColorController = Ember.Controller.extend({
yyy : [{name:"c"}, {name:"d"}], // this triggers deprecation
// You attempted to access `yyy` from ...
// But object proxying is deprecated. Please use `model.yyy` instead
});
{{#each item in yyy}}
<li>{{item.name}}</li>
{{/each}}
App = Ember.Application.create();
App.Color = DS.Model.extend({
name: DS.attr('string')
});
App.Router.map(function() {
this.resource('color', function(){
this.route('show', { path: ':color_id' });
});
});
App.IndexRoute = Ember.Route.extend({
model: function() {
return [
{ id: 1, name: "Red" },
{ id: 2, name: "Blue" },
];
}
});
App.IndexController = Ember.Controller.extend({
xxx : [{name:"a"}, {name:"b"}], // this works just fine
});
App.ColorController = Ember.Controller.extend({
init : function() {
this._super();
console.info("Just to double check, this controller gets initialised");
},
yyy : [{name:"c"}, {name:"d"}], // this triggers deprecation
// You attempted to access `yyy` from ...
// But object proxying is deprecated. Please use `model.yyy` instead
});
<script type="text/x-handlebars">
<h2>Ember Starter Kit</h2>
{{outlet}}
</script>
<script type="text/x-handlebars" id="index">
<h3>Index</h3>
<ul>
{{#each color in model}}
<li>{{#link-to "color.show" color}} {{color.name}} {{/link-to}}</li>
{{/each}}
</ul>
<ul>
{{#each item in xxx}}
<li>{{item.name}}</li>
{{/each}}
</ul>
</script>
<script type="text/x-handlebars" id="color/show">
<h3>color/show</h3>
<h4>{{ model.name }}</h4>
<ul>
{{#each item in yyy}}
<li>{{item.name}}</li>
{{/each}}
</ul>
{{#link-to "application"}}Go back to the list{{/link-to}}
</script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="http://builds.emberjs.com/tags/v1.13.2/ember.debug.js"></script>
<script src="http://builds.emberjs.com/tags/v1.13.2/ember-template-compiler.js"></script>
<script src="http://builds.emberjs.com/tags/v1.13.2/ember-data.js"></script>
I'd like to learn more:
why it works in one case and doesn't work in another?
what is the Ember way of fixing it?
EDIT: Updated code snippet include Color model. To trigger deprecation warning click on one of the colours (Red, Blue)... This is what happens when I run the snippet:

Okay, as I expected - problem lies in naming conventions and relics of the past(ObjectController). Declaring ColorController creates controller for model, not a route. You need here controller for route, so changing ColorController to ColorShowController solves problem and values render. Deprecation's gone.
App = Ember.Application.create();
App.Color = DS.Model.extend({
name: DS.attr('string')
});
App.Router.map(function() {
this.resource('color', function(){
this.route('show', { path: ':color_id' });
});
});
App.IndexRoute = Ember.Route.extend({
model: function() {
return [
{ id: 1, name: "Red" },
{ id: 2, name: "Blue" },
];
}
});
App.IndexController = Ember.Controller.extend({
xxx : [{name:"a"}, {name:"b"}], // this works just fine
});
App.ColorShowController = Ember.Controller.extend({
init : function() {
this._super();
console.info("Just to double check, this controller gets initialised");
},
yyy : [{name:"c"}, {name:"d"}], // this triggers deprecation
// You attempted to access `yyy` from ...
// But object proxying is deprecated. Please use `model.yyy` instead
});
<script type="text/x-handlebars">
<h2>Ember Starter Kit</h2>
{{outlet}}
</script>
<script type="text/x-handlebars" id="index">
<h3>Index</h3>
<ul>
{{#each color in model}}
<li>{{#link-to "color.show" color}} {{color.name}} {{/link-to}}</li>
{{/each}}
</ul>
<ul>
{{#each item in xxx}}
<li>{{item.name}}</li>
{{/each}}
</ul>
</script>
<script type="text/x-handlebars" id="color/show">
<h3>color/show</h3>
<h4>{{ model.name }}</h4>
<ul>
{{#each item in yyy}}
<li>{{item.name}}</li>
{{/each}}
</ul>
{{#link-to "application"}}Go back to the list{{/link-to}}
</script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="http://builds.emberjs.com/tags/v1.13.2/ember.debug.js"></script>
<script src="http://builds.emberjs.com/tags/v1.13.2/ember-template-compiler.js"></script>
<script src="http://builds.emberjs.com/tags/v1.13.2/ember-data.js"></script>

Parsing ember-leaflet coordinates from json using ember models

I am new to ember and ember-leaflet.js. I am trying to feed data (via an ajax call to a json file) to both my handlebars template and my ember-leaflet map. With my current setup, the data reaches my handlebars template just fine, but doesn't render the coordinates data to the ember-leaflet map.
I am using the two examples listed below as my guides, but have hit a wall because of my lack of experience with ember. Can anyone point me in the right direction please?
Ajax and ember example
Partial example of what I'm trying to accomplish
Handlebars template:
<script type="text/x-handlebars" data-template-name="application">
{{outlet}}
</script>
<script type="text/x-handlebars" data-template-name="index">
{{view App.MapView id="map"}}
<div id="blog">
<ul>
{{#each item in model}}
<li>{{item.headline}}</li>
{{/each}}
</ul>
</div>
</script>
Ember:
App = Ember.Application.create();
App.Router.map(function() {
// put your routes here
});
App.IndexRoute = Ember.Route.extend({
model: function(){
return App.Item.all();
}
});
App.Item = Ember.Object.extend();
App.Item.reopenClass({
all: function() {
return $.getJSON("js/data/test_e.json").then(function(response) {
var items = [];
response.features.forEach( function (data) {
items.push( App.Item.create(data) );
});
return items;
});
}
});
App.MarkerCollectionLayer =
EmberLeaflet.MarkerCollectionLayer.extend({
locationBinding: 'controller.item.center'});
App.MapView = EmberLeaflet.MapView.extend({
childLayers: [
EmberLeaflet.DefaultTileLayer,
App.MarkerCollectionLayer]
});
App.IndexController =
Ember.Controller.extend({});
JSON file:
{
"features": [
{
"headline": "Docker, the Linux container runtime: now open-source",
"center" : [40.714, -74.000]
},
{
"headline": "What's Actually Wrong with Yahoo's Purchase of Summly",
"center" : [40.714, -73.989]
}
]
}

The main fix needed here is the locationBinding in the MarkerCollectionLayer. The location binding needs to be in the MarkerLayer class. Furthermore, you need to use the EmberLeaflet.computed functions to convert simple lat lng arrays to a Leaflet LatLng object. See this example:
App.MarkerCollectionLayer = EmberLeaflet.MarkerCollectionLayer.extend({
content: Ember.computed.alias('controller'),
itemLayerClass: EmberLeaflet.MarkerLayer.extend({
location: EmberLeaflet.computed.latLngFromLatLngArray('content.center'),
})
});
Check out this JSFiddle with a full working example: http://jsfiddle.net/xALu4/2/

Ember Data: preload relationships

What I'm trying to do is very basic but I'm having very little luck...
Simply enough, I don't want to display a chunk of HTML until a certain Ember Data model property is fully loaded.
As you can see from the jsfiddle, the parent model: App.Person gets loaded into the DOM and it also loads the 3 placeholders for its hasMany property belts.
It then executes the request to populate App.Belt and fills in the placeholders.
While this is usually ok, it makes a big mess of things when trying to build an SVG, for example. Since the surrounding <svg> tags will get appended to the DOM immediately and then some time down the track (once the asynchronous request returns data), the inner svg components will be added between the tags. This usually creates browser rendering errors.
TL;DR
In the example, how do I defer the <h3>...</h3> section of the template from being added to the DOM until the model data and its relationships (belts) are fully loaded? This way everything gets visually and physically added to the DOM at once.
The JS:
// Create Ember App
App = Ember.Application.create();
// Create Ember Data Store
App.store = DS.Store.create({
revision: 11,
//Exagerate latency to demonstrate problem with relationships being loaded sequentially.
adapter: DS.FixtureAdapter.create({latency: 5000})
});
// Create parent model with hasMany relationship
App.Person = DS.Model.extend({
name: DS.attr( 'string' ),
belts: DS.hasMany( 'App.Belt' )
});
// Create child model with belongsTo relationship
App.Belt = DS.Model.extend({
type: DS.attr( 'string' ),
parent: DS.belongsTo( 'App.Person' )
});
// Add Parent fixtures
App.Person.FIXTURES = [{
"id" : 1,
"name" : "Trevor",
"belts" : [1, 2, 3]
}];
// Add Child fixtures
App.Belt.FIXTURES = [{
"id" : 1,
"type" : "leather"
}, {
"id" : 2,
"type" : "rock"
}, {
"id" : 3,
"type" : "party-time"
}];
// Set route behaviour
App.IndexRoute = Ember.Route.extend({
model: function() {
return App.Person.find();
},
renderTemplate: function() {
this.render('people');
}
});
The HTML/HBS:
<script type="text/x-handlebars">
<h1>Application</h1>
{{outlet}}
</script>
<script type="text/x-handlebars" id="people">
<h3>Don't load this header until every belt defined in App.Person.belts is loaded</h3>
<ul>
{{#each controller}}
{{debugger}}
<li>Id: {{id}}</li>
<li>Name: {{name}}</li>
<li>Belt types:
<ul>
{{#each belts}}
<li>{{type}}</li>
{{/each}}
</ul>
</li>
{{/each}}
</ul>
</script>
The fiddle: http://jsfiddle.net/zfkNp/4/

Check for the controller.content.length and belts.isLoaded, See the jsfiddle for a solution.
<script type="text/x-handlebars" id="people">
{{#if controller.ready}}
<h3>Don't load this header until every belt defined in App.Person.belts is loaded</h3>
{{/if}}
<ul>
{{#each controller}}
{{debugger}}
{{#if belts.isLoaded}}
<li>Id: {{id}}</li>
<li>Name: {{name}}</li>
<li>Belt types:
<ul>
{{#each belts}}
<li>{{type}}</li>
{{/each}}
</ul>
</li>
{{/if}}
{{/each}}
</ul>
</script>
App.IndexController = Ember.ArrayController.extend({
content: null,
ready:function() {
return this.get('content.length')>0
}.property('content.length')
});

EmberJS nesting

Given the following code, I thought the person.index and nested person.finish routes would use the PersonController content/model property since theirs was empty/undefined? What am I doing wrong? http://jsfiddle.net/EasyCo/MMfSf/5/
To be more concise: When you click on the id, the {{id}} and {{name}} are blank? How do I fix that?
Functionality
// Create Ember App
App = Ember.Application.create();
// Create Ember Data Store
App.Store = DS.Store.extend({
revision: 11,
adapter: 'DS.FixtureAdapter'
});
// Create parent model with hasMany relationship
App.Person = DS.Model.extend({
name: DS.attr( 'string' ),
belts: DS.hasMany( 'App.Belt' )
});
// Create child model with belongsTo relationship
App.Belt = DS.Model.extend({
type: DS.attr( 'string' ),
parent: DS.belongsTo( 'App.Person' )
});
// Add Person fixtures
App.Person.FIXTURES = [{
"id" : 1,
"name" : "Trevor",
"belts" : [1, 2, 3]
}];
// Add Belt fixtures
App.Belt.FIXTURES = [{
"id" : 1,
"type" : "leather"
}, {
"id" : 2,
"type" : "rock"
}, {
"id" : 3,
"type" : "party-time"
}];
App.Router.map( function() {
this.resource( 'person', { path: '/:person_id' }, function() {
this.route( 'finish' );
});
});
// Set route behaviour
App.IndexRoute = Ember.Route.extend({
model: function() {
return App.Person.find();
},
renderTemplate: function() {
this.render('people');
}
});
Templates
<script type="text/x-handlebars">
<h1>Application</h1>
{{outlet}}
</script>
<script type="text/x-handlebars" id="people">
<h2>People</h2>
<ul>
{{#each controller}}
<li>
<div class="debug">
Is the person record dirty: {{this.isDirty}}
</div>
</li>
<li>Id: {{#linkTo person this}}{{id}}{{/linkTo}}</li>
<li>Name: {{name}}</li>
<li>Belt types:
<ul>
{{#each belts}}
<li>{{type}}</li>
{{/each}}
</ul>
</li>
{{/each}}
</ul>
</script>
<script type="text/x-handlebars" id="person">
<h2>Person</h2>
Id from within person template: {{id}}<br><br>
{{outlet}}
</script>
<script type="text/x-handlebars" id="person/index">
Id: {{id}}<br>
Name: <a href="#" {{action "changeName"}}>{{name}}</a><br><br>
{{#linkTo index}}Go back{{/linkTo}}<br>
{{#linkTo person.finish}}Go to finish{{/linkTo}}
</script>
<script type="text/x-handlebars" id="person/finish">
<h2>Finish</h2>
{{id}}
</script>

You can use this in your router:
model: function() {
return this.modelFor("person");
}
Instead of your's:
controller.set('content', this.controllerFor('person'));

Your views were served through different controllers, either Ember's generated one or the one you defined PersonIndexController and that contributed to the issue you were facing. Instead of patching your original example to make it work, i instead reworked it to show you how you should structure your views/routes to leverage Emberjs capabilities.
You should design your application/example as a series of states working and communicating with each other and captured in a Router map. In your example, you should have a people, person resource and a finish route with corresponding views and controllers, either you explicitly create them or let Ember do that for you, providing you're following its convention.
Here's a working exemple and below I highlighted some of the most important parts of the example
<script type="text/x-handlebars" data-template-name="people">
<h2>People</h2>
<ul>
{{#each person in controller}}
<li>
<div class="debug">
Is the person record dirty: {{this.isDirty}}
</div>
</li>
<li>Id: {{#linkTo 'person' person}}{{person.id}}{{/linkTo}}</li>
<li>Name: {{person.name}}</li>
<li>Belt types:
<ul>
{{#each person.belts}}
<li>{{type}}</li>
{{/each}}
</ul>
</li>
{{/each}}
</ul>
</script>
<script type="text/x-handlebars" data-template-name="person">
<h2>Person</h2>
Id from within person template: {{id}}<br><br>
Id: {{id}}<br>
Name: <a href="#" {{action "changeName"}}>{{name}}</a><br><br>
{{#linkTo index}}Go back{{/linkTo}}<br>
{{#linkTo person.finish}}Go to finish{{/linkTo}}
{{outlet}}
</script>
Models, Views, Controllers and Route definitions
DS.RESTAdapter.configure("plurals", { person: "people" });
App.Router.map( function() {
this.resource('people',function() {
this.resource('person', { path: ':person_id' }, function() {
this.route( 'finish');
});
})
});
App.PeopleController = Ember.ArrayController.extend();
App.PeopleRoute = Ember.Route.extend({
model: function() {
return App.Person.find();
}
})
App.IndexRoute = Ember.Route.extend({
redirect: function() {
this.transitionTo('people');
}
});
App.PersonRoute = Ember.Route.extend({
model: function(params) {
debugger;
return App.Person.find(params.client_id);
},
renderTemplate: function() {
this.render('person',{
into:'application'
})
}
})
App.PersonFinishRoute = Ember.Route.extend({
renderTemplate: function() {
this.render('finish',{
into:'application'
})
}
})

advice about how I can combine 2 Handlebars templates that both use the same data?

I'm currently learning how to template using Handlebars and would like some advice about how I would combine the following 2 templates into 1 and update my script so each button still displays the correct set of values?
Templates
<script type="text/x-handlebars" id="infoTemp">
{{#each films}}
<li>
<h2>{{title}}</h2>
<p>{{{description}}}</p>
</li>
{{/each}}
</script>
<script type="text/x-handlebars" id="additionalInfoTemp">
{{#each films}}
<li>
<h1>{{id}}</h1>
<h2>{{title}}</h2>
<p>{{{description}}}</p>
<small>{{released}}</small>
</li>
{{/each}}
</script>
JS
// Dummy data
data = {
"films": [
{
"id": "1",
"title": "The Shawshank Redemption",
"description": "Two imprisoned men bond over a number of years, finding solace and eventual redemption through acts of common decency.",
"released": "2012-09-17 00:00:00"
},
{
"id": "2",
"title": "The Godfather",
"description": "The aging <b>patriarch of an organized</b> crime dynasty transfers control of his clandestine empire to his reluctant son.",
"released": "2012-09-17 00:00:00"
}
]
}
var $info = $('#info');
var source;
//Grab contents of template
function templateData(id){
if( id == 'add1' ){
source = $("#infoTemp").html();
} else {
source = $("#additionalInfoTemp").html();
}
var template = Handlebars.compile(source);
$info.append(template(data));
}
//Grab the container div and insert the templated data in
$('button').on('click', function(e){
var thisData = $(this).data('id');
$info.html('');
templateData(thisData);
e.preventDefault();
});
JS Fiddle
http://jsfiddle.net/2TpJh/2/
​

You can check for the existence of each of the variables and render the h1 and released only if they exist:
<script type="text/x-handlebars" id="additionalInfoTemp">
{{#each films}}
<li>
{{#id}}<h1>{{.}}</h1>{{/id}}
<h2>{{title}}</h2>
<p>{{{description}}}</p>
{{#released}}<small>{{.}}</small>{{/released}}
</li>
{{/each}}
</script>