Send file along with other fields in Angularjs

form-with-file-in-angularjs.js

// inside directive

function linkFunc(scope, element, attrs, ctrl) {
    element.on('change', '.file-logo', function(event) {
        ctrl.onFileSelect(event.target.files);
    });
}

function Controller() {
    var vm = this;
    vm.onFileSelect = onFileSelect;

    function onFileSelect($files) {
        console.log($files);
        logoFile = $files[0];
        // angular.forEach($files, function (value, key) {
        //     formDataObject.append(key, value);
        // });
    }
}