Please check out the code attached:
I am trying to access the index using {{@index}} but it seems not to be compiling. I think handlebars supports that:
{{#each item in model}}
{{@index}}
{{item}}
{{/each}}
It is not working for me. I can't figure out if the {{@index}} is supported or not.
I am using:
UPDATE
Since this PR, it's now possible to use the each helper with index, taking advance of the new block params syntax. This is available on canary and hopefully will be enabled by default in ember 1.11
{{#each model as |item index|}}
<li>
Index: {{index}} Content: {{item}}
</li>
{{/each}}
FOR OLD VERSIONS
You can use {{_view.contentIndex}}.
{{#each item in model}}
<li>
Index: {{_view.contentIndex}} Content: {{item}}
</li>
{{/each}}
= each model as |item index| isn't working for me.
No it doesn't exist in Ember's version of Handlebars, one way is to use an item controller and add a property to it saying whether it's the first or last etc.
App.IndexController = Ember.ArrayController.extend({
itemController: 'itemer'
});
App.ItemerController = Ember.ObjectController.extend({
needs:['index'],
isFirst: function(){
return this.get('color') === this.get('controllers.index.firstObject.color');
}.property('controllers.index.firstObject')
});
Note, regarding the @index syntax specifically, as of October 2014:
Ember does not support @index (or any of the other @data type properties).
https://github.com/toranb/ember-template-compiler/issues/16#issuecomment-38823756
I like the answer from @kingpin2k--The Ember Way is to use a controller to decorate a model, and in this context we want to decorate it by adding an index property to represent its place in the collection.
I do it slightly differently, by building a separate collection of instance controllers decorated for the task at hand:
App.PostsIndexController = Ember.ArrayController.extend({
indexedContent: function() {
get('content').map(function(item, index) {
App.PostsItemController.create({
content: item,
index: index
});
});
}.property('content')
});
App.PostsItemController = Ember.ObjectController.extend({
index: null
});
If you're just looking to display the index as a 1-indexed value in your view, you could also give CSS Counters a shot. They are supported all the way back to IE 8.
