Polymorphic problem @class in first place SOLVED in JavaScript with angular

[Jorge Machado]

Dear all I developed a Javascript Method to reorder the fields and let @class allays in first place

in nested JSON objects

var BacoJS = (function () {

    function orderKeys(obj, expected) {

        var keys = Object.keys(obj).sort(function keyOrder(k1, k2)

        {

            if(k1 == "@class")

                return -1;

            else if(k2 == "@class")

                return 1

            else

                return 0;

            //if (k1 < k2) return -1;

            //else if (k1 > k2) return +1;

            //else return 0;

        });

        var i, after = {};

        for (i = 0; i < keys.length; i++) {

            after[keys[i]] = obj[keys[i]];

            delete obj[keys[i]];

        }

        for (i = 0; i < keys.length; i++) {

            obj[keys[i]] = after[keys[i]];

        }

        return obj;

    }

    function orderKeysRecur(obj, expected)

    {

        if(typeof obj == "object")

            orderKeys(obj, expected);

        for (var k in obj)

        {

            if (typeof obj[k] == "object" && obj[k] !== null)

                orderKeysRecur(obj[k]);

        }

    }

    return {

        stringifyOrdered: function (jsonObj) {

            orderKeysRecur(jsonObj)

            //return JSON.stringify(jsonObj);  // OR

            return angular.toJson(jsonObj);

        }

    };

})();

//does not affect angular JS lib

//you can use-it with angular

var orderedExample = BacoJS.stringifyOrdered(exampleBacoJs);

console.log(orderedExample);

[Eugen Cepoi]

Hey, thanks for sharing this!

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[Jorge Machado]

//WAS MISSING THE EXAMPLE

var exampleBacoJs =

{

    "xpto" : 1,

    "@class" : "pt.estgp.estgweb.domain.XptoSchool",

    "zgt" : {

        "zgt1" : 1,

        "zgt2" : 2,

        "@class" : "pt.estgp.estgweb.domain.ZgtDepartment"

    }

} 

//does not affect angular JS lib

//you can use-it with angular

var orderedExample = BacoJS.stringifyOrdered(exampleBacoJs);

console.log(orderedExample);

RESULT:

>>>>>>>>CONSOLE>>>>>>>>

{

  "@class" : "pt.estgp.estgweb.domain.XptoSchool",  

  "xpto" : 1,

   "zgt" : {

        "@class" : "pt.estgp.estgweb.domain.ZgtDepartment"

        "zgt1" : 1,

        "zgt2" : 2,

    }

}