Mutations with resolvers inheritance

[jpbarbosa]

I was able to implement resolvers inheritance following the docs and the example on GitHub, but both only show how to implement queries, and I'd like to inheritance mutations.

When I tried it by myself, I got an error in the argument "record":

import { Arg, ClassType, Mutation, Resolver } from 'type-graphql';
import { Record } from '../entities/_Record';

export const createRecordResolver = <
  T extends Record,
  Input extends Partial<T>
>(
  objectTypeCls: ClassType<T>
) => {
  @Resolver({ isAbstract: true })
  abstract class BaseResolver {
    @Mutation((type) => objectTypeCls)
    async createRecord(@Arg('record') recordInput: Input) {
      console.log(recordInput);
    }
  }

  return BaseResolver;
};

 NoExplicitTypeError: Unable to infer GraphQL type from TypeScript reflection system. You need to provide explicit type for argument named 'record' of 'createRecord' of 'BaseResolver' class.

Inheritance is great for common CRUD operations and would be great to see mutations examples on the documentation.

Docs: https://typegraphql.com/docs/0.17.0/inheritance.html#resolvers-inheritance

Thank you.

[MichalLytek]

export const createRecordResolver = <
  T extends Record,
  Input extends Partial<T>
>(
  objectTypeCls: ClassType<T>,
  inputTypeCls: ClassType<Input>
) => {
  @Resolver({ isAbstract: true })
  abstract class BaseResolver {
    @Mutation((type) => objectTypeCls)
    async createRecord(@Arg('record', () => inputTypeCls) recordInput: Input) {
      console.log(recordInput);
    }
  }

  return BaseResolver;
};

[jpbarbosa]

Thank you. It worked!