groupBy doesn't work with date properties #11
Description
groupBy does not work if you are trying to group using Ember's date attribute. Suppose we have a model:
// app/models/entry.js
export default Model.extend({
name: attr('string'),
date: attr('date'),
});
And we get data from a JSON endpoint that looks like this:
[
{
"name": "Object 1",
"date": "2015-09-29",
},
{
"name": "Object 2",
"date": "2015-09-30",
},
{
"name": "Object 3",
"date": "2015-09-30",
},
]
We have a controller that uses groupBy to group them by the date attribute:
// app/controllers/view.js
import Ember from 'ember';
import groupBy from 'ember-group-by';
export default Ember.Controller.extend({
entriesByDate: groupBy('model', 'date')
});
Which we then use in a template:
{{#each entriesByDate as |group| }}
<h1>{{group.value}}</h1>
{{#each group.items as |entry| }}
{{entry.name}}<br>
{{/each}
{{/each}
We would expect the output to be:
<h1>2015-09-29</h1>
Object 1<br>
<h1>2015-09-30</h1>
Object 2<br>
Object 3<br>
However, groupBy puts each of the entries into their own group. Changing the attr in the model from date to string gives the expected output.