Filter on filterable relation

[danjirovec]

Hello, I'm want to achieve a situtation where I can filter on filterable relation of a filterable relation using TypeORM.

I have a ticket entity which has relation to event entity. Event entity has relation to business entity. When I try to get business ID from the ticket entity using the following GraphQL query:

export const TICKETS_QUERY = gql`
  query TicketsList(
    $filter: TicketFilter!
    $sorting: [TicketSort!]
    $paging: OffsetPaging!
  ) {
    tickets(filter: $filter, sorting: $sorting, paging: $paging) {
      nodes {
        id
        price
        validated
        event {
          id
          name
          business {
            id
            name
          }
        }
        created
      }
    }
  }
`;

I can't because there is no business field on the TicketFilterEventFilter even though I have declared filterable relation to business on the event entity.

TicketFilterEventFilter:

input TicketFilterEventFilter {
  and: [TicketFilterEventFilter!]
  category: CategoryFilterComparison
  created: DateFieldComparison
  date: DateFieldComparison
  id: IDFilterComparison
  language: LanguageFilterComparison
  length: NumberFieldComparison
  name: StringFieldComparison
  or: [TicketFilterEventFilter!]
  subtitles: LanguageFilterComparison
  updated: DateFieldComparison
}

Event dto:

@ObjectType('Event')
@QueryOptions({ filterDepth: 2 })
@FilterableRelation('venue', () => VenueDto)
@FilterableRelation('business', () => BusinessDto)
@FilterableRelation('event_template', () => EventTemplateDto)
export class EventDto {
  @IsNotEmpty()
  @IsUUID()
  @IDField(() => ID)
  id!: string;

  @IsNotEmpty()
  @IsString()
  @FilterableField()
  name!: string;

  @IsNotEmpty()
  @IsString()
  @Field()
  description!: string;

  @IsNotEmpty()
  @IsNumber()
  @FilterableField()
  length!: number;

  @IsDefined()
  @IsEnum(Category, { each: true })
  @FilterableField(() => Category)
  category!: Category;

  @IsDefined()
  @IsEnum(Language, { each: true })
  @FilterableField(() => Language)
  language!: Language;

  @IsOptional()
  @IsEnum(Language, { each: true })
  @FilterableField(() => Language, { nullable: true })
  subtitles?: Language;

  @IsOptional()
  @IsUrl()
  @Field({ nullable: true })
  posterUrl?: string;

  @IsNotEmpty()
  @IsDate()
  @FilterableField()
  date!: Date;

  @IsNotEmpty()
  @IsDate()
  @FilterableField(() => GraphQLISODateTime)
  created!: Date;

  @IsNotEmpty()
  @IsDate()
  @FilterableField(() => GraphQLISODateTime)
  updated!: Date;
}

I tried using filterDepth query option but no luck with that. Is there a way to do what I'm describing? Thank you very much for any help.