Passing an object to views/layout.ejs in Sails.Js

I am having a hard time trying to pass an object to the layout of my project in order to get a list of categories i need to show in the navbar. I have been trying o couple of solutions here and all relates on using a policy and assigning res.locals.myVar = someObj, the problem is that res.locals and also using req.options.locals.myVar are only available in the controller action's view and not the layout

So far i got this.

// getRoomList POLICY

Room.find().exec(function(err, rooms) {
    if (err) {
        return res.badRequest('Something went wrong.');
    }
    if (rooms) {
        res.locals.roomlist = rooms;
        next();
    } else {
        res.notFound();
    }
});

// config/policies

'*': 'getRoomList'

// In layout.ejs

<%= roomlist %>