我如何在另一个函数中使用retailId（来自flatMapLatest）

Posted 2023-03-15

【中文标题】我如何在另一个函数中使用retailId（来自flatMapLatest）

【英文标题】：how i can use retailId(from flatMapLatest) in another func

【发布时间】：2019-05-24 11:00:26

【问题描述】：

视图模型：

        searchButtonInDidTapSubject.withLatestFrom(retailIdSubject.map  text in return text).flatMapLatest  [unowned self] retailId in
        return service.searchRetailPayCashBack(retailId: retailId, createdAt: self.createdDates, sig: self.sig).materialize();
        .subscribe(onNext:  [weak self] event in
            switch (event) 
            case .next(_):
                self?.checkResultSubject.onNext(true)
                break;
            case .error(let error):
                self?.errorSubject.onNext(error as! ErrorResponse);
                break;
            default:
                break;
            
        ).disposed(by: disposeBag);

//这里我需要转换retailId、currentTime和accessToken 之后我发送请求 api

 private var sig: String
get 
    let accessToken = self.keychain.get(Constants.accessToken)
    // ???
    let newAccessToken = String((accessToken?.substring(with: 11..<21))!)
    let retailid = ???
    let newSig = "\(newAccessToken)\(self.createdDates)\(retailid)"
    let md5Base64 = newSig.base64Encoded()
    let md5Data = self.MD5(md5Base64!)
    return String(md5Data!)

retailId 需要等于retailid

【参考方案1】：

不确定您要达到什么目的，但听起来每次点击按钮时都应该生成sig，因为retailId 可能不同。

searchButtonInDidTapSubject
    .withLatestFrom(retailIdSubject.map  text in return text )
    .flatMapLatest  [unowned self] retailId in
        return service
            .searchRetailPayCashBack(
                retailId: retailId,
                createdAt: self.createdDates,
                sig: self.sig(withRetailId: retailId, createdDate: self.createdDates)
            )
            .materialize()
    
    .subscribe(onNext:  [weak self] event in
        switch (event) 
        case .next(_):
            self?.checkResultSubject.onNext(true)
            break;
        case .error(let error):
            self?.errorSubject.onNext(error as! ErrorResponse);
            break;
        default:
            break;
        
    )
    .disposed(by: disposeBag)

func sig(withRetailId retailId: String, createdDate: String) -> String 
    let accessToken = self.keychain.get(Constants.accessToken)
    // ???
    let newAccessToken = String((accessToken?.substring(with: 11..<21))!)
    let newSig = "\(newAccessToken)\(createdDate)\(retailId)"
    let md5Base64 = newSig.base64Encoded()
    let md5Data = self.MD5(md5Base64!)
    return String(md5Data!)