TableView 单元格中的 MVVM

Question

希望你一切都好，我正在开发一个应用程序，它使用 TableView 向使用 ViewModel 的用户显示提要，我的 ViewModel 包含一个包含所有单元格数据的变量，ViewModel 还包含其他数据，我在做什么正在将整个 ViewModel 引用和 indexPath 传递给单元格，您可以在这里看到：

func configureCell(feedsViewModelObj feedsViewModel: FeedsViewModel, cellIndexPath: IndexPath, presentingVC: UIViewController){
    //Assigning on global variables
    self.feedsViewModel = feedsViewModel
    self.cellIndexPath = cellIndexPath
    self.presentingVC = presentingVC
   
    let postData = feedsViewModel.feedsData!.data[cellIndexPath.row]
    
    //Populate
    nameLabel.text = postData.userDetails.name
    userImageView.sd_setImage(with: URL(string: postData.userDetails.photo), placeholderImage: UIImage(named: "profile-image-placeholder"))
    
    updateTimeAgo()
    postTextLabel.text = postData.description
    upvoteBtn.setTitle(postData.totalBull.toString(), for: .normal)
    upvoteBtn.setSelected(selected: postData.isClickedBull, isAnimated: false)
    downvoteBtn.setSelected(selected: postData.isClickedBear, isAnimated: false)
    downvoteBtn.setTitle(postData.totalBear.toString(), for: .normal)
    commentbtn.setTitle(postData.totalComments.toString(), for: .normal)
    optionsBtn.isHidden = !(postData.canEdit && postData.canDelete)
    
    populateMedia(mediaData: postData.files)
}

那么，将完整的 ViewModel 引用和索引传递给单元格然后每个单元格从数据数组访问其数据是正确还是好方法？ （如果没有请指导我）。 非常感谢。

Answer 1

*不需要将整个 ViewModel 引用和 indexPath 传递给单元格。收到数据后回调：

ViewController -> ViewModel -> TableViewDatasource -> TableViewCell.*

视图控制器

 class ViewController: UIViewController {
        var viewModel: ViewModel?
        
        override func viewDidLoad() {
            super.viewDidLoad()
            TaxiDetailsViewModelCall()
        }
        
        func TaxiDetailsViewModelCall() {
            viewModel = ViewModel()
            viewModel?.fetchFeedsData(completion: {
                self?.tableViewDatasource = TableViewDatasource(_feedsData:modelview?.feedsData ?? [FeedsData]())
                DispatchQueue.main.async {
                    self.tableView.dataSource = self.tableViewDatasource
                    self.tableView.reloadData()
                }
           })
        }
    }

查看模型

class ViewModel {
var feedsData = [FeedsData]()
    func fetchFeedsData(completion: () -> ())  {
        let _manager = NetworkManager()
        _manager.networkRequest(_url: url, _modelType: FeedsData.self, _sucessData: { data in
            self.feedsData.accept(data)
       completion()
        })
    }
}

TableView 数据源

 class TableViewDatasource: NSObject,UITableViewDataSource {
        
        var feedsData: [FeedsData]?
        init(_feedsData: [FeedsData]) {
            feedsData = _feedsData
        }
        func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
            return feedsData.count
        }
        
        func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
            guard let cell = tableView.dequeueReusableCell(withReuseIdentifier: "TableViewCellName", for: indexPath) as? TableViewViewCell else {
                return TableViewViewCell()
            }
            cell.initialiseOutlet(_feedsData: feedsData[indexPath.row])
            return cell
        }
    }

表格视图单元格

class TableViewCell: UITableViewCell {
            
            @IBOutlet weak var nameLabel : UILabel!
            @IBOutlet weak var userImageView : UIImageView!
            @IBOutlet weak var postTextLabel : UILabel!
            @IBOutlet weak var upvoteBtn : UIButton!
            @IBOutlet weak var downvoteBtn : UIButton!
            @IBOutlet weak var commentbtn : UIButton!
            @IBOutlet weak var optionsBtn : UIButton!
            
            
            override func awakeFromNib() {
                super.awakeFromNib()
            }
            
            /*
             Passing feedsData Object from TableViewDatasource
             */
            func initialiseOutlet(_feedsData: feedsData) {
                nameLabel.text = _feedsData.userDetails.name
                userImageView.sd_setImage(with: URL(string: _feedsData.userDetails.photo), placeholderImage: UIImage(named: "profile-image-placeholder"))
                
                updateTimeAgo()
                postTextLabel.text = _feedsData.description
                upvoteBtn.setTitle(_feedsData.totalBull.toString(), for: .normal)
                upvoteBtn.setSelected(selected: _feedsData.isClickedBull, isAnimated: false)
                downvoteBtn.setSelected(selected: _feedsData.isClickedBear, isAnimated: false)
                downvoteBtn.setTitle(_feedsData.totalBear.toString(), for: .normal)
                commentbtn.setTitle(_feedsData.totalComments.toString(), for: .normal)
                optionsBtn.isHidden = !(_feedsData.canEdit && postData.canDelete)
            }
        }