How to filter from struct in swift

Question

Response Data Json format

[
 {
   "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"
 },
]

Model Class SearchPortfolioModel

import Foundation

typealias searchPortfolioModel = [SearchPortfolioModel]

struct SearchPortfolioModel: Codable {
    let stock, code: String    

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

PortfolioViewModel

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)
}

Inside ViewController Class Added UITableView & UISearchBar. How to search the data from UISearchBar based on the provided response. In ViewController whole parse data displayed into 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 Delegate Method.

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

      filtered = searchPortfolioStocks.filter{ $0.stock.range(of: searchText, options: .caseInsensitive) != nil }

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

I want to search it with based on stock & code name!

You don't need to use NSString to perform a case-insensitive compare. — rmaddy
– rmaddy, Commented Apr 17, 2019 at 18:55
@rmaddy I have updated my question in order to put it correct way for understand. — kiran
– kiran, Commented Apr 17, 2019 at 19:55
@JoakimDanielson Its now working! I failed to pass proper data type to filtered data []. — kiran
– kiran, Commented Apr 17, 2019 at 20:39

Peter Tretiakov · Accepted Answer · 2019-04-17 20:22:04Z

1

If I understand you correctly, you need localizedCaseInsensitiveContains(_:) method to filter stocks.

filtered = searchPortfolioStocks.filter {
    $0.stock.localizedCaseInsensitiveContains(searchText) || $0.code.localizedCaseInsensitiveContains(searchText)
}

answered Apr 17, 2019 at 20:22

Peter Tretiakov

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