What is the procedure for incorporating additional elements into an already established object in angularjs?

Integrating the company name input from a form like so:

$scope.master = {}; 

implemented with:

$scope.master = angular.copy(cmpy); 
// Result obtained is Object {cname: "Company 2"}

Currently, attempting to add owner details from another form directly into $scope.master. Have tried methods such as push and concat, but they are not yielding results. Reusing copy simply overwrites existing information.

Answer №1

If your AngularJS version is 1.4.0 or higher, you can take advantage of the extend feature by using the following syntax:

angular.extend($scope.master, $scope.ownerDetails);

This will efficiently transfer all the values from $scope.ownerDetails (or any other source of owner details) to the $scope.master.

For versions of AngularJS below 1.4.0, there is a workaround that involves creating your own extend method as shown in the code snippet below:

// The following code is essentially extracted from the AngularJS 1.4.0 library
function baseExtend(dst, objs, deep) {
    var h = dst.$$hashKey;

    for (var i = 0, ii = objs.length; i < ii; ++i) {
        var obj = objs[i];
        if (!angular.isObject(obj) && !angular.isFunction(obj)) {
            continue;
        }

        var keys = Object.keys(obj);
        for (var j = 0, jj = keys.length; j < jj; j++) {
            var key = keys[j];
            var src = obj[key];

            if (deep && angular.isObject(src)) {
                if (angular.isDate(src)) {
                    dst[key] = new Date(src.valueOf());
                } else {
                    if (!angular.isObject(dst[key])) {
                        dst[key] = angular.isArray(src) ? [] : {};
                    }
                    baseExtend(dst[key], [ src ], true);
                }
            } else {
                dst[key] = src;
            }
        }
    }
    if (h) {
        dst.$$hashKey = h;
    } else {
        delete dst.$$hashKey;
    }
    return dst;
}

angular.merge = function(dst) {
    var slice = [].slice;
    return baseExtend(dst, slice.call(arguments, 1), true);
};

Answer №2

When working with arrays, it's important to note that push and concat are useful methods. However, if you are dealing with an object like $scope.master, you would need a different approach to add another key:

$scope.master['owner_details'] = owner_details;

Answer №3

If you prefer, other responses can assist in setting the main variable programmatically, especially if you are attempting to use push functions and similar methods.

However, when referring to a "form" that consists of HTML fields, you have the option to directly connect the user details to $scope.master using ngmodel. For instance:

<input type="text" ng-model="master.firstname" />

This is just one alternative for consideration.

Wishing you the best of luck!

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