AngularJs pass model value + model name to function in controller

$scope.populateMap=[{name: "ABC", code: "123"}, {name: "XYZ", code: "345"}]

//Want to send model name + value of model Currently sending ngObject.MainObj.specificFormatObj

HTML

<select ng-model="ngObject.MainObj.specificFormatObj" ng-change="ngObject.MainObj.specificFormatObj">
    <option></option>
    <option ng-repeat="i in populateMap" value="{{i}}">{{i.name}}</option>

JS

// CONTROLLER CODE JSON parse object to get name and code GOT parsedObj
$scope.genericSetLookups=function (Obj) {  // want to do something like get the ngmodel string + the value, currently only value comes in
    Obj.code=parsedObj.code;
    Obj.name=parsedObj.name
};

More Explanation: ngObject.MainObj.specificFormatObj

• I want in my model to store value of lookups in a specific way, with name and code. On the UI I populate using ng-repeat , So when I select a particular value I can either take i.name as display and set value as i.code .
• But if i do that my ngObject.MainObj.specificFormatObj.name will be null and the value will get set to ngObject.MainObj.specificFormatObj.code by using ng-model ,so that is the reason in value I am taking i, not i.code or i.value ,now in the map i have code and name pair.
• I sent it to a function and parse it, and set the value to ngObject.MainObj.specificFormatObj.code=inputTofunc.code respectively for name. In this case in the ng-change i pass on the ngObject.MainObj.specificFormatObj.code ,rather i want to set i from the map to ngObject.MainObj.specificFormatObj send it to function also the model string which in this case would be "ngObject.MainObj.specificFormatObj" .
• So for 10 lookups i can write a generic code ,where the model name and model value i can send as parameter to function and set it there, the above way am doing is probably hardcoding values which i want to set to model in a specific format.

Since you need to pass the model name as a parameter, pass it as a string like this from html :

ng-change="genericSetLookups('ngObject.SomeObject.abc',ngObject.SomeObject.abc)"

And in the controller as the model name contains "." we cannot use the name directly as the key. We need to parse the model name. I have cooked something up after searching a bit. Hope it works.

Controller code:

    $scope.genericSetLookups(modelName, value){
        Object.setValueByString($scope, modelName, value);
    }

    Object.setValueByString = function(o, s, val) {
    s = s.replace(/\[(\w+)\]/g, '.$1'); // convert indexes to properties
    s = s.replace(/^\./, '');           // strip a leading dot
    var a = s.split('.');
    for (var i = 0, n = a.length; i < n; ++i) {
        var k = a[i];
        if (k in o) {
            if(i != n-1){
                o = o[k];
            }
            else{
                o[k] = val;
            }
        } else {
            return;
        }
    }
    return o;
  }

Credit must also go to @Alnitak for the answer here