property 'requestId' of 'context._tgdContext' is undefined

[benja128]

Im trying to load a list of workout-sessions and then load them into the dataloader.
The dataloader is being used in a fieldresolver. The goal is to check if any of the workout-sessions, exist in another collection and then return either true or false.

For testing, i have just tried to return a list with all true...

The fieldresolver:

@FieldResolver(returns => Boolean)
@Loader<string, Boolean>(async ids => {
	const userSelections = await Userselections.find({ _id: { $in: ids } });
	return [true];
})
is_favorite(@Root() root: WorkoutSession) {
	return (dataloader: DataLoader<string, Boolean>) =>
		dataloader.load(root._id.toString());
}

I get this error:

Does anyone know a solution?

I am using TypeScript, Express and MongoDB

[alfonsogarza]

Seems like Apollo Server is required. Did you configure it?

[alfonsogarza]

I was able to get this to 'work' with TypeGraphQL without Apollo by doing this in my GraphQl configs. I based it of this.

Caution I haven't tested it fully and not sure the delete is the same as reset in Container.

async customExecuteFn (args: ExecutionArgs) {
    args.contextValue._tgdContext = {
        requestId: uuidv4(),
        typeormGetConnection: <... typeormconnection ... >
    };

    const result = await execute(args);

    delete args.contextValue._tgdContext;

    return result;
}

[planecore]

@alfonsogarza Hey! Did you find a better way or is this the best way you've found?

[alfonsogarza]

I ended up using DataLoader directly and keeping a cache of loaders in the graphQL context instead of using this library - flip side is that I, of course, can't simply use decorators and have to manually call the loaders (which I really only do inside my field resolvers).

[laukaichung]

I ran into this error with Automatic Persisted Queries (APQ) enabled for the apollo server v3. The first request sent to the server returns this error, and APQ isn't working:

 Internal server error Cannot read properties of undefined (reading 'requestId') {"extensions":{"code":"INTERNAL_SERVER_ERROR","exception":{"stacktrace":["TypeError: Cannot read properties of undefined (reading 'requestId')","    at Object.willSendResponse (/home/project/watch/web/node_modules/type-graphql-dataloader/dist/plugins/apollo-server/ApolloServerLoaderPlugin.js:17:73)"

I have to manually add _tgdContext to the context in the apollo server config to make APQ work again, not ideal at all:

  const apolloServer = new ApolloServer({
    cache: new BaseRedisCache({
      client: redisClient,
    }),
    context: async ({ req, res }) => {
      const context = {} as GqlContext;
      context["_tgdContext"] = {
        requestId: uuidv4(),
        typeormGetConnection: () => AppDataSource,
      };
      return context;
    },
 })

Has anyone run into this similar issue with APQ enabled?

[geoyws]

This has been working for us since March 2023. The new pull request with tests passing is below 🙂:
https://github.com/slaypni/type-graphql-dataloader/pull/41/files