MongoDB _id field

[drksbr]

Hey guys.

It must be silly, but I'm not managing to evolve in this issue of ID fields.

Example:

# schema.graphql

type Mutation {
   createISP(isp: NewISP!): ISP!
}

type ISP {
   ID: ID!
   Name: String!
   Location: String!
   Devices: [Devices]
}

input NewISP {
   Name: String!
   Location: String!
}

// isp.resolver.go

type ISP struct {
IDField graphql.ID
NameField string
LocationField string
DevicesField *[]*Device
}

func (i *ISP) ID() graphql.ID {
	return i.IDField
}

func (i *ISP) Name() string {
	return i.NameField
}

func (i *ISP) Location() string {
	return i.LocationField
}

func (r *Resolver) GetISPs() []*ISP {

	var results []*ISP
	cursor, err := DB.Find(context.Background(), bson.M{})
	if err != nil {
		return nil
	}
	if err := cursor.All(context.Background(), &results); err != nil {
		return nil
	}
	return results
}

type NewISP struct {
	Name     string
	Location string
}

func (r *Resolver) CreateISP(args *struct{ Isp NewISP }) *ISP {

	// create new
	ispId := randomID() // Here I make a fake ID for testing because I couldn't use the id of the mongo object.

	isp := &ISP{
		IDField:       graphql.ID(ispId),
		NameField:     args.Isp.Name,
		LocationField: args.Isp.Location,
	}

	DB.InsertOne(ctx, isp)

	return isp
}

• I'm wanting to use _id as an identification field and not need to create a new field for it as I did with IdField
  

Can you help me with this issue?