Mutation input

[crisp kraken]

Hello everyone. Im learning Nestjs and I came across to this example in the documentation:

@Mutation(returns => Post)
async upvotePost(
  @Args('upvotePostData') upvotePostData: UpvotePostInput,
) {}

Why do I need to add an argument of 'upvotePostData' to the parameter decorator? Is the name arbitrary?

[idle inlet]

@crisp kraken - The name of the argument can be any name. It's just best practice to use the same name as the input object.

[elder fractal]

I think he meant the string value passed to the decorstor. That must match exactly the name in the schema (in case of shema first), or it will be what gets generated in the schema (code first). That's due to the fact that typescript can't read the name of the parameter itself.