Is there an easier way to assign this variable with object destructuring?

Question

const user = new db.User({
        firstName: req.body.firstName,
        lastName: req.body.lastName,
        password: req.body.password,
        email: req.body.email,
        dateCreated: req.body.dateCreated
    })

I know there's a way to assign values to an object by giving the attributes the same name as their source but I'm not sure how this would work.

Perhaps new `db.User(req.body)` is all you need? I still would favor manual mapping though — Nico Van Belle, Sep 05 '17 at 14:00
Do you want all the object properties or just the ones that are named? — spanky, Sep 05 '17 at 14:20

Luke Glazebrook · Accepted Answer · 2017-09-05T13:58:19.780

2

You could deconstruct all of these values above to simplify it:

const { firstName, lastName, password, email, dateCreated } = req.body

Then all you would need to do is the following:

const user = new db.User({
    firstName,
    lastName,
    password,
    email,
    dateCreated,
})

edited Sep 05 '17 at 13:58

answered Sep 05 '17 at 13:56

Luke Glazebrook

580
2
14

But then how will I refer to that object later (in the db.User() function)? – TheGreyBearded Sep 05 '17 at 13:58
I see, thank you! Will mark this as an answered as soon as I stack overflow allows me. – TheGreyBearded Sep 05 '17 at 14:01
Cool, did not know this was possible. Javascript never ceases to amaze me – Nico Van Belle Sep 05 '17 at 14:07
For some reason people hate javascript what with it always changing, but updates like that are all good for me. – TheGreyBearded Sep 05 '17 at 14:22

score 0 · Answer 2 · answered Sep 05 '17 at 14:00

0

It seems like a good use case for Automapper. It will map like names and can collapse variables.
http://automapper.org/

answered Sep 05 '17 at 14:00

biznetix

94
5

score -1 · Answer 3 · answered Sep 05 '17 at 14:31

You could also do it as a functional one-liner, but even in this case you still have to repeat property names.

const user = new db.User(
  (({firstName, lastName, password, email, dateCreated}) =>
   ({firstName, lastName, password, email, dateCreated}))(req.body)
);

Is there an easier way to assign this variable with object destructuring?

3 Answers3