[Feature request] support object in directive field to method params

[erwan-joly]

would be nice to support object in directive parsing.

Yup currently allow you to define a specific error message string quite easily for required.

directives: {
  required: {
    errorMessage: "defined"
  }
}

sadly this seems to be the equivalent in zod and it does not work. If we put the content between quotes we end up with this z.string().string("{required_error: 'The field is required.'}").
This is having two issues:

• zod doesn't support multi chaining the same method so would need to remove the first one
• the object is between quote :/

directives: {
  required: {
    errorMessage: ["string", { required_error: '$1' }]
  }
}

Had a quick look but sadly my understanding of the lib is quite small so haven't been able to add that feature.

[Code-Hex]

@erwan-joly

input ComponentInput {
  type: ButtonComponentType!
  name: String! @required(msg: "Hello")
  event: EventInput
  child: ComponentInput
  childrens: [ComponentInput]
}

Then generated:

export function ComponentInputSchema(): yup.ObjectSchema<ComponentInput> {
  return yup.object({
    child: yup.lazy(() => ComponentInputSchema()).optional(),
    childrens: yup.array(yup.lazy(() => ComponentInputSchema())).defined().nullable().optional(),
    event: yup.lazy(() => EventInputSchema()).optional(),
    name: yup.string().defined().nonNullable().required("Hello"), // This one
    type: ButtonComponentTypeSchema.nonNullable()
  })
}

This directive works even if it is not defined as a GraphQL schema.

Or does the request want to assign default error messages? (to defined and nullable, etc)

[erwan-joly]

yeah the idea is to be able to define the error message for those in my example which I can already do in yup but can't in zod because they use object parameter and the only thing we can use as param from my understanding are string and regexp

z.string().string({required_error: 'The field is required.'})

Additionally we can't reuse the same method in zod oposite to yup.

this is valid in yup: yup.number().defined().defined().defined().defined() but invalid in zod.

[Code-Hex]

Ah, I think I understand.
Would it be feasible to set up something like this for example?

config:
  required: $1
    errorMessage: $1
    applyTo: defined # will be generated method

GraphQL Schema looks like this.

input ComponentInput {
  type: ButtonComponentType!
  name: String! @required(errorMessage: "Hello")
  event: EventInput
  child: ComponentInput
  childrens: [ComponentInput]
}

The expected generation is

export function ComponentInputSchema(): yup.ObjectSchema<ComponentInput> {
  return yup.object({
    child: yup.lazy(() => ComponentInputSchema()).optional(),
    childrens: yup.array(yup.lazy(() => ComponentInputSchema())).defined().nullable().optional(),
    event: yup.lazy(() => EventInputSchema()).optional(),
    name: yup.string().defined("Hello").nonNullable(), // this one
    type: ButtonComponentTypeSchema.nonNullable()
  })
}

However, this method is not very intuitive for first-time users.

[erwan-joly]

Yes something like this would works I think