Filter unique values from a JSON

Question

I am using angularjs for my page. I want to filter the values from the JSON object, So that no redundancy exists. But I didn't find any way to get the unique values from angular ng-repeat. Is there anyway to do that?

Ok, Here is some description about the question. I have a JSON in this format. This JSON I am getting from a service. So we cant expect how the repeated data occure.

result = [
        {
            _id: "500004",
            subject: "Complete the task",
            date: "25 Aug, 2013"
        },      
        {
            _id: "500004",
            subject: "Complete the task",
            date: "25 Aug, 2013"
        },      
        {
            _id: "500005",
            subject: "Attend to the event",
            date: "2 Jan, 2013"
        },      
        {
            _id: "500065",
            subject: "Some task deadline",
            date: "20 Sep, 2013"
        },      
        {
            _id: "500004",
            subject: "Complete the task",
            date: "25 Aug, 2013"
        }
]

I want the output JSON to be with no repeated elements, So that my output will be something like this

result = [
        {
            _id: "500004",
            subject: "Complete the task",
            date: "25 Aug, 2013"
        },      
        {
            _id: "500005",
            subject: "Attend to the event",
            date: "2 Jan, 2013"
        },      
        {
            _id: "500065",
            subject: "Some task deadline",
            date: "20 Sep, 2013"
        }
]

Answer 1

You can make use of Angular UI which has the unique filter defined.

The source can be found here.

Basically, you can then make use of the filter as follows:

<div ng-repeat="item in result | unique:'_id'">
    //Body here
</div>