Trouble with Controllers to manipulate an Object inside a Service - angularjs

Question

I have an object which should be accessible in many controllers.
This object is inside a Service, has default values and the controller might change those values later.
My problem is that my object inside the service keep values changed by controllers.
When a controller get the object, I want always that it takes the object with default values. (not with values previously modified by an other controller before...)
I have this inside my service :
this.myObject = {'item1' : 'something', 'item2' : 'other' , .....};
I know that it's not correct because of this.
So I tried to make a method like this :
this.createMyObject = function() {
var obj = myObject;
return obj;
}
And call createMyObject(); in my controllers but this doesn't work too.
I know that the solution might be obvious.
Thanks.

Answer 1

If what you want is a copy of myObject, what you want to do is :
var obj = angular.copy(myObject);
Because var obj = myObject; will just copy the reference of the object, not its content.

Answer 2

Object in Javascript are pass by reference unless copied or cloned. So when you are doing
this.createMyObject = function() {
var obj = myObject;
return obj;
}
The reference of myObject is getting assigned to obj hence, any change in obj will update the myObject as well.
Consider using angular.extend or angular.copy
this.createMyObject = function() {
var obj = {};
angular.copy(myObject, obj);
// or
// obj = angular.copy(myObject);
return obj;
}

Answer 3

Try the below solution:
Service Code:
.service('MyService', function() {
var myObject = {
'item1': '',
'items2': ''
};
/**
* Used to return copy of myObject with some default values
*/
this.createMyObject = function() {
return angular.copy(myObject);
};
this.alterMyObject = function() {
// #TODO here myObject can be used to edit directly
};
});
Note:
"=" operator between two object just used to assign reference of RHS obj to LHS. So any further changes with LHS object will be reflected to RHS obj also.