AngularJS Edit JSON data using forms - angularjs

Question

In AngularJS , I am trying to make and editable TreeView from JSON data. I want to get a nodevalue from JSON and edit it using forms. While editing, the original JSON should change immediately. I created below plunkr for this but not getting an idea, how to achieve this.
Plunkr
var app = angular.module('plunker', []);
app.directive('collection', function () {
return {
restrict: "E",
//replace: true,
scope: {collection: '='},
//controller: 'TreeController',
//bindToController: true,
template: "<ul><member ng-repeat='member in collection' member='member'></member></ul>"
}
})
app.directive('member', function ($compile) {
var linkerfunc = function(scope, element, attrs) {
var collectionSt = '<collection collection="member.children"></collection>';
$compile(collectionSt)(scope, function(cloned, scope) {
element.append(cloned);
});
scope.ShowDetailsFunc = function() {
console.log('in function scope showdetails')
scope.ShowDetailsCtrlFunc(element,event);
}
}
return {
restrict: "E",
//replace: true,
scope: {member: '=', ShowDetailsCtrlFunc : '&'},
template: "<li><span ng-click=ShowDetailsCtrlFunc($event)>{{member.NodeName}}</span></li>",
controller: 'MainCtrl',
//controllerAs: 'MainCtrl',
//bindToController: true,
link: linkerfunc
}
})
app.controller('MainCtrl', function ($scope,$timeout) {
$scope.Intialfunc = function() {
$scope.testdata = []
var myjsondata = JSON.parse('{ "NodeName": "Parent", "NodePath": "1", "children": [ { "NodeName": "mychild", "NodePath": "1.1", "children": [ { "NodeName": "chld1", "NodePath": "1.1.1", "children": [] } ] } ] }');
$scope.testdata.push(myjsondata);
//console.log($scope.testdata) //This one is showing
$scope.changename = $scope.testdata[0].children[0].children[0].NodeName;
}
$timeout(function(){ $scope.Intialfunc(); }, 1000)
$scope.ShowDetailsCtrlFunc = function(event) {
console.log("in function ShowDetailsCtrlFunc");
//event.stopImmediatePropagation();
};
});
I tried angular.copy but that needs the portion of JSON data in a $scope variable and updates that variable as expected.
But my JSON data going to be a huge and i dont know how to update it without using variable. Please help.

Answer 1

You can use ng-change to perform an action when an input changes:
<input type="text" ng-model="changename" ng-change="inputChange()">
Then, just create a function in your controller that updates what you need it to:
$scope.inputChange = function() {
// do stuff here
$scope.testdata[0].children[0].children[0].NodeName = $scope.changename;
// write object to JSON
var JSONstring = $scope.testdata.toJSON();
}
I would also recommend looking at ng-model-options and changing the debounce settings so that you aren't constantly toJSONing with every keystroke.
http://plnkr.co/edit/dPWsowm4Puwajgk6CfvA?p=preview