small example with uniform graphql mutation handling optional properties

[Morriz]

Describe the issue

Hi, I can't craft a uniform mutation using generated CRUD resolvers that can process optional properties.

Example that does work:

variables (phoneNumber is optional but provided):

{"id": "1", "email": "[email protected]", "name": "mame", "phoneNumber": "123456789"}

mutation:

mutation UpdateUser(
    $id: String!
    $email: String!
    $name: String!
    $phoneNumber: String
  ) {
    updateUser(
      where: { id: $id }
      data: {
        email: { set: $email }
        name: { set: $name }
        phoneNumber: { set: $phoneNumber }
      }
    ) {
      updatedAt
      name
      email
      phoneNumber
    }
  }

Which sets the phoneNumber field, which is ok.

But when I then leave out the phoneNumber I get this error:

Argument data.phoneNumber of type NullableStringFieldUpdateOperationsInput needs at least one argument.

I would think it is possible to construct a uniform mutation that is idempotent, so we don't have to track what is optional and what is given and then have to adapt our mutation accordingly. (That would suk)

[Morriz]

I know this is related to https://github.com/MichalLytek/typegraphql-prisma/issues/32, but I am specifically asking for an example how to do mutations with your crud resolvers handling non-required fields.

[MichalLytek]

Please search how to use the @if and @skip directives in queries

[Morriz]

Thanks, but I can only find query related docs, nothing about mutations with conditional fields. Just one example would be awesome for all of us

[Morriz]

I get the feeling that crafting proper gql for these resolvers is hard and results in a very proprietary setup that not many people can find information about, or examples of. I do hope that I can sell this to my devs when my PoC is done, but I see an uphill battle

[MichalLytek]

Syntax for those directives is common for queries mutations and subscriptions. Search on the official GraphQL docs.

[Morriz]

I went through their examples, but none of the skip or if directives is used in a mutation. If you know of a link to such documentation, please do share.

[Morriz]

I tried using them in this mutation but get errors:

mutation UpdateUser(
    $id: String!
    $email: String!
    $name: String!
    $phoneNumber: String
  ) {
    updateUser(
      where: { id: $id }
      data: {
        email: { set: $email }
        name: { set: $name }
        phoneNumber: @include(if: $phoneNumber) {
          set: $phoneNumber
        }
      }
    ) {
      updatedAt
      name
      email
      phoneNumber
    }
  }

[Morriz]

@MichalLytek I am seriously considering donating for this example, and I am probably not the only in need of it. How much would do you want for it?