Nexus: how to support something like a date / dateTime arg?

[chrisdrackett]

I'm moving over to nexus and so far I'm pretty happy with it. However I've run into something I'm confused about around args that are not provided by nexus. For example I have the following:

    t.field('setDeleted', {
      type: 'Task',
      args: {
        id: idArg({ required: true }),
        deletedAt: stringArg({ required: true }),
      },
      resolve: (_parent, { id, deletedAt }, ctx) => {
        return ctx.prisma.updateTask({
          where: { id },
          data: { isDeleted: true, deletedAt: deletedAt },
        })
      },
    })

However with this I get an error: Variable "$deletedAt" of type "DateTime!" used in position expecting type "String!".

so I'm curious how to support an arg type that isn't provided by nexus.

[tgriesser]

You can use the arg and create little helpers for these as you see fit (assumes DateTime is available as a custom scalar):

const dateTimeArg = (opts) => arg({ ...opts, type: "DateTime" })

[chrisdrackett]

ok, thanks, any help on what the type for opts would be?

I'm using:

const dateTimeArg = (opts: core.CommonArgConfig) =>
  arg({ ...opts, type: 'DateTime' })

which seems to work, but really is just a guess :D

[tgriesser]

Yep, that or this should work:

import { arg, core } from 'nexus'
const dateTimeArg = (
  opts: core.NexusArgConfig<'DateTime'>
) => arg({ ...opts, type: "DateTime" })

Really the only difference is the type for the default value.