Gqlgen: How to get the field names of directives?

[yuya-kanai]

What happened?

directive @isID on FIELD_DEFINITION
type Salesperson {

    Name  : String!
    Age: Int! 
    UserID: Int! @isID
}

For something like this, with directive IsID how would you get 'UserID' as a string?
I can get the entire field with obj, or the value of UserID but that is not enough to infer 'UserID'

UserID: Int! @isID(FieldName:"UserID")
This seems to be the best I can do.

versions

• gqlgen version? v0.10.1-dev
• go version? go version go1.12.7 linux/amd64
• dep or go modules? mod

[JulienBreux]

Hi @yuya-kanai 👋

You can't read this info in the ctx context.Context?

• https://github.com/99designs/gqlgen/blob/master/graphql/context.go#L158
• https://github.com/99designs/gqlgen/blob/master/graphql/context.go#L178

[yuya-kanai]

Thank you @JulienBreux

I guess it was mentioned here in the documentation.
I completely went past it.
This is the directive implementation

import ("github.com/99designs/gqlgen/graphql")
c.Directives.IsID = func(ctx context.Context, obj interface{}, next graphql.Resolver) (interface{}, error) {
        ctxValue := graphql.GetResolverContext(ctx)
        fmt.Printf("context: %#v\n", ctxValue)
}

[yuya-kanai]

Unfortunately this seems not to be working.

graphql.GetResolverContext(ctx).Object returns 'Salesperson' not 'UserID' and
graphql.CollectAllFields(ctx) returns an empty array.

[o1egl]

Based on docs https://gqlgen.com/reference/directives/

- obj: the object containing the value this was applied to, eg:
for field definition directives, the object/input object that contains the field
for argument directives, a map containing all arguments

but I see in generated code that obj is always set as nil. Looks like it is a bug

[yuya-kanai]

@o1egl Thanks. Good to know it's a bug.

@vvakame Thank you for the label, also your MTC2018 blog was amazing (sorry for off topic)

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[dtrckd]

Hello,
Any upcoming news about this bug ?
Or is there any reason why the field name of the given directive shouldn't be visible from directive resolver ???