Accessing parent from nested child resolver

[clarkmcc]

In the following example, I want to resolve the value in C, but I need the IDs of both A and B to do it. p.Source only gives me B, but not A. What is the proper way to solve this problem?

var a = graphql.NewObject(graphql.ObjectConfig{
	Name: "A",
	Fields: graphql.Fields{
		"id": &graphql.Field{Type: graphql.String},
		"b": &graphql.Field{Type: graphql.NewObject(graphql.ObjectConfig{
			Name: "B",
			Fields: graphql.Fields{
				"id": &graphql.Field{Type: graphql.String},
				"c": &graphql.Field{Type: graphql.NewObject(graphql.ObjectConfig{
					Name: "C",
					Fields: graphql.Fields{
						"value": &graphql.Field{
							Type: graphql.String,
							Resolve: func(p graphql.ResolveParams) (interface{}, error) {
								// I need the ID of A to resolve the value of C
								return nil, nil
							},
						},
					},
				})},
			},
		})},
	},
})

[spasarok]

You should be able to handle this using Go's context.Context type. See this explanation:

One benefit of using context.Context in a program is the ability to access data stored inside a context. By adding data to a context and passing the context from function to function, each layer of a program can add additional information about what’s happening.

In other words, you can have resolvers A and B add their IDs to the context, and then resolver C can look up those IDs. I hope this helps, and others can correct me if there's a better pattern.