How to make ng-repeat filter out duplicate results

Question

I\'m running a simple ng-repeat over a JSON file and want to get category names. There are about 100 objects, each belonging to a category - but there are only

Answer 1

This might be overkill, but it works for me.

Array.prototype.contains = function (item, prop) {
var arr = this.valueOf();
if (prop == undefined || prop == null) {
    for (var i = 0; i < arr.length; i++) {
        if (arr[i] == item) {
            return true;
        }
    }
}
else {
    for (var i = 0; i < arr.length; i++) {
        if (arr[i][prop] == item) return true;
    }
}
return false;
}

Array.prototype.distinct = function (prop) {
   var arr = this.valueOf();
   var ret = [];
   for (var i = 0; i < arr.length; i++) {
       if (!ret.contains(arr[i][prop], prop)) {
           ret.push(arr[i]);
       }
   }
   arr = [];
   arr = ret;
   return arr;
}

The distinct function depends on the contains function defined above. It can be called as array.distinct(prop); where prop is the property you want to be distinct.

So you could just say $scope.places.distinct("category");