Add a parent route in ember for existing routes

Here is my problem, assume I am having an ember app with following ember route configuration:

Router.map(function() {
  this.route('todos', function() {
    this.route('new');
    this.route('view', {
      path: "/:id"
    });
  });
  this.route('articles', function() {
    this.route('view', {
      path: "/:id"
    });
    this.route('new');
  });
});

Now i want to add the add the prefix for each route based on some user information i would be fetching. For eg: Below are the two user information

dev = {
 id: 1, 
 workspace: 'DEV'
}
qa = {
 id: 2,
 workspace:'TEST'
} 

once the dev is landing in the app, route must be like: todos:

/DEV/todos/new

and same for the other users. once the qa is landing in the page, route must be like:

/TEST/todos/new

to solve this i know we generate the parent route and add all the other route as child, need to change the file structure for this case.

Here is Ember :

ember-cli: 2.13.3,
ember-data: 2.18.5