如何在 SearchController 中搜索 hashTag？

如何解决如何在 SearchController 中搜索 hashTag？

我要搜索主题标签。当前代码现已完成，并创建了一个搜索栏。我正在使用 RxSwift 和 Mvvm 模式。这是迄今为止我一直在编写的代码。我应该如何搜索主题标签？

    func setUI() {
        self.searchBar = UISearchBar(frame: CGRect(x:300,y:0,width:300,height:20))

        searchBtn.rx.tap.subscribe(onNext: { _ in
            self.navigationItem.searchController = self.searchController
            self.navigationItem.hidesSearchBarWhenScrolling = false
            UIView.animate(withDuration: 0.25) {
                self.searchBar.frame = CGRect(x:0,height:20)

            }
        }).disposed(by: rx.disposeBag)

    }

这是视图控制器。

    private let disposeBag = disposeBag()

    struct input {
        let loadData: Signal<Void>

    }

    struct output {
        let result: Signal<String>
        let loadApplyList: PublishRelay<friends>
    }

    func transform(_ input: input) -> output {
        let api = SearchAPI()
        let result = PublishSubject<String>()
        let loadApplyList = PublishRelay<friends>()

        input.loadData.asObservable().subscribe(onNext: { [weak self] in
            guard let self = self else { return }
            api.getFriend().subscribe(onNext: { (response,statuscode) in
                switch statuscode {
                case .ok:
                    if let response = response {
                        loadApplyList.accept(response)
                    }
                default:
                    print("default")
                }
            }).disposed(by: self.disposeBag)
        }).disposed(by: disposeBag)

        return output(result: result.asSignal(onErrorJustReturn: ""),loadApplyList: loadApplyList)
    }
}

这是视图模型