如何从 swift 中的结构过滤

Question

响应数据Json格式

[
 {
   "STOCK": "20 Microns Ltd. EOD Prices",
   "CODE": "BOM533022"
 },
 {
   "STOCK": "3i Infotech Ltd. EOD Prices",
   "CODE": "BOM532628"
 },
 {
   "STOCK": "3m India Ltd. EOD Prices",
   "CODE": "BOM523395"
 },
 {
   "STOCK": "7seas Technologies Ltd-$ EOD Prices",
   "CODE": "BOM590116"
 },
]

模型 Class SearchPortfolioModel

import Foundation

typealias searchPortfolioModel = [SearchPortfolioModel]

struct SearchPortfolioModel: Codable {
    let stock, code: String    

    enum CodingKeys: String, CodingKey {
        case stock = "STOCK"
        case code = "CODE"
    }
}

投资组合视图模型

func stockCodeValue(completion: @escaping () -> ()) {
    portfolioClient.fetchSearchPortfolio(){ searchPortfolioModel in
        self.searchPortfolioModel = searchPortfolioModel
        completion()
    }
}

struct PortfolioSearch{

    var stockName: String
    var stockCode: String
}

func portfolioSearchForItemAtIndexPath(indexPath: NSIndexPath) -> (SearchPortfolioModel){

    let stockName = searchPortfolioModel?[indexPath.row].stock ?? ""
    let stockCode = searchPortfolioModel?[indexPath.row].code ?? ""

    return SearchPortfolioModel(stock: stockName, code:stockCode)
}

内部 ViewController Class 添加了 UITableView 和 UISearchBar。如何根据提供的响应从 UISearchBar 中搜索数据。 ViewController 整个解析数据显示到 tableview

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int{

        if(searchActive) {
            return filtered.count
        }
//        return data.count;
        return portfolioViewModel.numberOfItemsInPortfolioSearchSection(section: section)
    }

    func configurationNewsCell (cell: AddPortfolioTableViewCell, forRowAtIndexPath indexPath:NSIndexPath){
        let searchPortfolioStocks = portfolioViewModel.portfolioSearchForItemAtIndexPath(indexPath: indexPath as NSIndexPath)

// Filtered data for stock & code need to will update based on search string.
        if(searchActive){
         cell.lbl_PortfolioStockName?.text = filtered[indexPath.row]
         cell.lbl_PortfolioStockCodeName?.text = searchPortfolioStocks.code

        } else {
            cell.lbl_PortfolioStockName?.text = searchPortfolioStocks.stock
            cell.lbl_PortfolioStockCodeName?.text = searchPortfolioStocks.code

        }
    }

UISearchBar 委托方法。

    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {

      filtered = searchPortfolioStocks.filter{ [=15=].stock.range(of: searchText, options: .caseInsensitive) != nil }

        if(filtered.count == 0){
            searchActive = false;
        } else {
            searchActive = true;
        }
        self.tbl_PortfolioSearch.reloadData()
    }

我要按股票代号搜索！

Answer 1

如果我没理解错的话，你需要localizedCaseInsensitiveContains(_:)方法来过滤股票。

filtered = searchPortfolioStocks.filter {
    [=10=].stock.localizedCaseInsensitiveContains(searchText) || [=10=].code.localizedCaseInsensitiveContains(searchText)
}

如何从 swift 中的结构过滤

How to filter from struct in swift

struct

filter

uisearchbar

swift