99designs/gqlgen

gqlgen generates non compilable federation.go code when schema uses @requires directive with attribute referring inside array for dependency

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#2,632 opened on May 10, 2023

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Description

What happened?

gqlgen generates non compilable code when schema has uses @requires directive with array nested attribute dependency for federation. in federation.go file i.e. see the sample schema that is mentioned below

What did you expect?

It should generate compilable code

Minimal graphql.schema and models to reproduce

type Query {
  reviews(bookID: ID!): [Review]
}
type Book @key(fields: "id", resolvable: false ) {
  id: ID! @external
  publishers:[Publishers] @external
  reviews: [Review]  @requires(fields: "publishers {name}" )
}
type Publishers @key(fields: "id", resolvable: false) {
  id: ID! @external
  name: String @external
}
type Review @key(fields: "id") {
  id: ID! @external
  name: String
}

versions

  • go run github.com/99designs/gqlgen version? v0.17.31
  • go version? go1.20.3 darwin/amd64

if you try to run ----

it will generate error validation failed: packages.Load: /graph/generated/federation.go:100 : 23: entity.Publishers.Name undefined (type []*model.Publishers has no field or method Name)

on this line in federation.go file

entity.Publishers.Name, err = ec.unmarshalOString2ᚖstring(ctx, rep["publishers"].(map[string]interface{})["name"])

This is because Publishers.Name is incorrect ... Publishers is array

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