Umbraco Json to css class="[]"

Question

I am using Umbraco and is working with the data-type grid layout and want to add custom settings (css classes) to each row/cell and it kinda work. User interface:

The "modifier": "{X}" give different results the 3 worked "best".

And the json:

[
  {
    "label": "Message Box",
    "description": "Message Box",
    "key": "class",
    "view": "checkbox",
    "modifier": "{3}",
    "applyTo": "cell",
    "config": {
      "items": {
        "key1": {
          "value": "value1"
        },
        "key2": {
          "value": "value2"
        },
        "key3": {
          "value": "value3"
        },
        "key4": {
          "value": "value4"
        }
      }
    }
  }
]

But the cell/rows that i apply these classes to end up looking like this

<div class="["key1", "key2", "key3", "key4"]">

And the html cant understand these classes when they have [] and commas after how can i make so the classes is applied propperly to the elements?

Pastebin of the modified Foundation5

Pastebin of Umbracos checkbox code

Answer 1

Change this:

    $scope.$watch('selectedItems', function (newVal, oldVal) {
        $scope.model.value = [];
        for (var x = 0; x < $scope.selectedItems.length; x++) {
            if ($scope.selectedItems[x].checked) {
                $scope.model.value.push($scope.selectedItems[x].key);
            }
        }
    }, true);

Into this:

    $scope.$watch('selectedItems', function (newVal, oldVal) {
        var classList = [];
        for (var x = 0; x < $scope.selectedItems.length; x++) {
            if ($scope.selectedItems[x].checked) {
                classList.push($scope.selectedItems[x].key);
            }
        }
        $scope.model.value = classList.join(' '); // imploding class list
    }, true);

Instead of adding the whole array with the class list to your front end, you should implode your array and split the individual classes by a whitespace.