graphql-flutter

[0x6a74]

hey there. first of all, thank you so much for you effort on bringing flutter architecture to the next level.

I've just followed your tutorial #14 and i am trying to implement graphql-flutter within the proposed architecture. I have a service (ApiGraphqlService) which depends on the AuthenticationService and should be consumed in e.g. PostViewModel.

I've already found a possible solution: zino-hofmann/graphql-flutter#339. But i thought it could be done a more "proper way"?

[FilledStacks]

Hi there, thanks for the kind words.

I don't see where your confusion is so maybe I'm missing something. You are right that it can be done in a more "service-wrapped" way. Services just wrap functionality so to keep your code less dependent on a third party library you can create your GraphQLService and wrap the client functionality you need. Something like this:

class GraphQLService {
GraphQLClient _client;

  Future<Posts> getPosts() {
   var result = _client.query(...);
   return Post.fromResult(results);
  }

}

And then you inject your Service as a normal independent provider

Provider.value(value: GraphQLService());

Then you just inject that into the model as we do with all the other services. Does that answer your question. If it doesn't please be a bit more specific on what you're doing, what's happening and what you're expecting in terms of your architecture then I'll see if I can come up with a better solution.

[0x6a74]

Thanks for the quick response. My major issue was to get the token (created/saved by the AuthService) into the GraphQLService. I'll now something like this:

class GraphQLService {
  GraphQLClient _client;
  GraphQLService({storageService...})

  Future _createClient(...) {}

  Future<Posts> getPosts() {
     _client = _createClient..
  }
}

[FilledStacks]

Yes that should definitely work. Goodluck, I'm happy to see the architecture being used. If you run into any kind of architectural limitations please let me know so that I can see what the best way would be to handle that situation.