Get linked values in the Javascript function as we do in Future Data Type

[calebeaires]

I cant use FUTURE data type to create a computed field. This is good:

## a car links to person that links to tools

CREATE tools:t1 SET name = 'toto';
CREATE person:p1 SET name = 'Test', age = 23, tools = tools:t1;
CREATE car SET name = 'Argo', person = "person:p1", some_value = <future> { person.tools.name + ' last name' }

The result of this is a perfect computed column called "some_value"

[
    {
        "time": "1.355625ms",
        "status": "OK",
        "result": [
            {
                "id": "car:yw96lbmv7urbaptmwh9a",
                "name": "Argo",
                "person": "person:p1",
                "some_value": "toto last name"
            }
        ]
    }
]

But would be great if I could do the same with Javascript Functions. At the example above you create the same tables and linked fields, but when using Javascript Function to "compute the field" while getting linked values, the platform give me and error.

CREATE tools:t1 SET name = 'toto';
CREATE person:p1 SET name = 'Test', age = 23, tools = tools:t1;

CREATE car SET name = 'Argo', person = "person:p1", some_value = function() {
	return this.person.tools.name
};

[
    {
        "time": "614.833µs",
        "status": "ERR",
        "detail": "Problem with embedded script function. An exception occurred: cannot read property 'name' of undefined\n    at default (script:2)\n"
    }
]