How to dynamically adjust the content of the PATCH method?

Question

I'm trying to build a REST API with NodeJS, ExpressJS and Prisma. At the moment, when I want to update a user through the PATH method, I do this:

const data = {}

if (req.body.email != null)
    data.email = req.body.email
if (req.body.password != null)
    data.password = req.body.password
if (req.body.first_name != null)
    data.first_name = req.body.first_name
if (req.body.last_name != null)
    data.last_name = req.body.last_name

await prisma.user.update({
    where: {
        id: parseInt(id)
    },
    data: data
})

I removed the unnecessary code to show you the essential things.

I think this is not the best option, is there an easier way to do the same thing? I've tried a few solutions but none of them work with Prisma, that's why I'm here.

Answer 1

You could make a helper function to make the code less repetitive

Something like

const copyProps = (src, ...keys) =>
  Object.fromEntries(
    Object.entries(src)
    .filter(([k,v]) => keys.includes(k) && v != null)
  );

Then you can use it like

await prisma.user.update({
    where: {
        id: parseInt(id)
    },
    data: copyProps(req.body, 'email', 'password', 'first_name', 'last_name');
});