Adding routes dynamically to a NestJS controller

Curently NestJS does not provide method for dynamic routes. The routes of controllers must be defined using the decorators @Controller(path), @Get(path) etc. However there is a quick solution that get the job done.

1. Define factory that return the Controller class like below

// mymodule.controller.ts
export function getControllerClass({ customPath }): Type<any> {
  @Controller()
  class MyController {
    constructor(private service: MyService) { }

    @Get([dynamicPath])
    async getSomething(@Res() res: Response) {
      //...
    }    
  }
  return MyController
}

2. Configure controller routes via your module

// mymodule.module.ts
@Module({})
export class MyModule {
  static forRoot(config): DynamicModule {
    const { customPath } = config.customPath;
    const MyController = getControllerClass({ customPath })
    return {
      module: MyModule,
      providers: [     
        MyService
      ],
      exports: [MyService],
      controllers: [MyController]
    };
  }
}