Wrong swagger generation for @Query with array of objects

[wilker7ribeiro]

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

I want to create a GET endpoint with a inner object inside query params:

export class QueryParamsSubObject {
  @ApiProperty()
  subObjectStringParam: string;
}

export class QueryParams {
  @ApiProperty()
  stringParam: string;

  @ApiProperty({ type: QueryParamsSubObject })
  subObject: QueryParamsSubObject;
}

@Controller()
export class AppController {
  constructor(private readonly appService: AppService) {}

  @Get('/bugged')
  getHelloBugged(@Query() queryParams: QueryParams): string {
    console.log(queryParams);
    return this.appService.getHello();
  }
}

The swagger definition is bugged, having all parameters from QueryParamsSubObject inside QueryParams instead of QueryParams.subObject:

The definition is generated correctly when using @ApiQuery instead of @Query:

@Get('/correct')
@ApiQuery({
  type: QueryParams,
})
getCorrectlyGenerated(): string {
  return this.appService.getHello();
}

Minimum reproduction code

Codesandbox
https://github.com/wilker7ribeiro/nest-swagger-query-object-param-issue

Steps to reproduce

1. npm install
2. npm start
3. open http://localhost:3000/api

Expected behavior

@Query should correctly generate the swagger definition as @ApiQuery does.

Package version

7.3.1

NestJS version

10.3.2

Node.js version

10.3.2

In which operating systems have you tested?

• macOS
• Windows
• Linux

[kamilmysliwiec]

Would you like to create a PR for this issue?