javascript - 在 AngularJs 中转换 JSON 对象

Question

有没有办法使用 Angular 转换这个 JSON 对象？我需要将 JSON 对象从这种格式转换为:

    $scope.TestJson = {
        "filters": [
                {
                    "dataPropertyID": "VoidType",
                    "label": "Homeless"
                },
                {
                    "dataPropertyID": "VoidType",
                    "label": "Mainstream"
                },
                {
                    "dataPropertyID": "PropertyType",
                    "label": "Flat"
                },
                {
                    "dataPropertyID": "PropertyType",
                    "label": "Cottage"
                }
        ]
    }

采用这种格式:

    $scope.NewTestJson = {
        "filters": [
                {
                    "dataPropertyID": "VoidType",
                    "label":[ "Homeless","Mainstream"]
                },
                {
                    "dataPropertyID": "PropertyType",
                    "label":[ "Flat", "Cottage"]
                }
        ]
    }

Answer 1

我认为这更像是一个 JavaScript 问题。尽管如此:

$scope.NewTestJson = {
    filters: [];
};

// Do something for all (old) filter items
$scope.TestJson.filters.forEach(function(filter) {
    // Try to get the existing (new) filter
    var newFilter = $scope.NewTestJson.filters.filter(function(newFilter) {
        return newFilter.dataPropertyID === filter.dataPropertyID;
    }).shift();

    // If the new filter does not exist, create it
    if (!newFilter) {
        newFilter = {
            dataPropertyID: filter.dataPropertyID,
            label: []
        };
        $scope.NewTestJson.filters.push(newFilter);
    }

    // Finally, add the old filter label to the new filter
    newFilter.label.push(filter.label);
});