RxSwift & RxDataSources 处理 UITableViewCell 内部UIButton点击

1： ViewController 部分

// 监听 Cell 内部的点击事件信号，并转发给 ViewModel
private typealias OprationingAction = (oprationRelay: PublishRelay<LbItemPresentable>, ())
private let oprationAction: OprationingAction = (oprationRelay: PublishRelay(), ())

// 用 Driver 的形式传递给 ViewModel
typealias Oprationting = (oprationBtn: Driver<LbItemPresentable>, ())
lazy var opration: Oprationting = (oprationBtn: oprationAction.oprationRelay.asDriver(onErrorDriveWith: .empty()), ())


private lazy var datasource = RxTableViewSectionedReloadDataSource<LbItemsSection>(configureCell: { _, tableView, indexPath, item in

    let lbUserCell = tableView.dequeueReusableCell(withIdentifier: LeaderboardViewController.cellId, for: indexPath) as! LBUserCell
    lbUserCell.configure(usingViewModel: item)
    
    // 监听 按钮点击信号 并用 PublishRelay 转发给 ViewModel
    lbUserCell.event.oprationBtn
        .subscribe(onNext: { [weak self] (itemModel) in
            self?.oprationAction.oprationRelay.accept(itemModel)
        }).disposed(by: lbUserCell.bag)  // 使用cell 内部的bag 

    return lbUserCell
})

2： ViewModel 部分

func startBinding() {
   // ViewModel 中订阅 ViewConroller中的信号
    self.input.oprationTap
        .do(onNext: { (itemModel) in
            print("\(itemModel.nikeName)")
        })
        .drive()
        .disposed(by: bag)
}

2：UITableViewCell 部分

var viewModel: LbItemPresentable!

var bag = DisposeBag()

typealias CellBtnEvent = (oprationBtn: PublishRelay<LbItemPresentable>, ())
let event: CellBtnEvent = (oprationBtn: PublishRelay<LbItemPresentable>(), ())

override func prepareForReuse() {
    super.prepareForReuse()
    bag = DisposeBag()
}

func configure(usingViewModel viewModel: LbItemPresentable) {
    self.viewModel = viewModel
    self.oprationBtn.rx.tap
        .subscribe(onNext: {[weak self] _ in
            guard let `self` = self else { return }
            // 按钮被点击 用 PublishRelay 发出信号
            self.event.oprationBtn.accept(self.viewModel)
        })
        .disposed(by: self.bag)
 }