Search Bar Not Displaying Search Results

Question

The search bar in my app isn't working. Ive narrowed down the problem to the method cellforRowAt. It's not able to show the search result when words are typed in. The cellforRowAt contains the information of the filtered articles in the indexpath. How do I resolve this ?

Project Link: https://github.com/lexypaul13/Covid-News.git

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { //determines what data source should be used when user types         if isFiltering{             return filteredArticles?.count ?? 0     }         return articles?.count ?? 0     }      func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {         let cell = tableView.dequeueReusableCell(withIdentifier: "cell1", for: indexPath) as! NewsTableViewCell         let news: Articles         filteredArticles = articles         if isFiltering{             news = filteredArticles![indexPath.row]         }         else{             news = articles![indexPath.row]         }         cell.authorName.text = filteredArticles?[indexPath.row].author         cell.headLine.text = filteredArticles?[indexPath.row].title         cell.newsImage.downloadImage(from:(self.filteredArticles?[indexPath.item].urlImage ?? "nill"))         cell.timePublication.text = filteredArticles?[indexPath.row].publishedAt         if let dateString = filteredArticles?[indexPath.row].publishedAt,         let date = indDateFormatter.date(from: dateString){                    let formattedString = outDateFormtter.string(from: date)                    cell.timePublication.text = formattedString                } else {                    cell.timePublication.text = "----------"                }                         return cell            }         func updateSearchResults(for searchController: UISearchController) {         let searchBar = searchController.searchBar         filterContentForSearchText(searchBar.text!, articles!)     }     func filterContentForSearchText(_ searchText:String ,_ category: [Articles]){         filteredArticles =  articles?.filter({ (article:Articles) -> Bool in             return article.description.lowercased().contains(searchText.lowercased())                      })         table_view.reloadData()     }

Shreesha Kedlaya · Accepted Answer · 2020-10-10 10:13:51Z

The problem in your code is the line return article.description.lowercased().contains(searchText.lowercased()) In this line the article.description gives you the description of the whole object and is a method of NSObjectProtocol.

So for this scenario you need to know on which item you need to search to get the filtered result. I looked at the code and got to know that the Articles contains title as a parameter. You can use this for filtering your search

So the code should change toreturn (article.title?.lowercased().contains(searchText.lowercased()) ?? false).

Can you please explain why I should the description didn't filter the results.
Every NSObject has a property called description. Even UIViewController's base class is NSObject. This description is actually defines the memory layout sometimes inside info of that object. So if you want to filter you cannot filter with description because its the whole object information instead of the title or fullDescription of the object. You can print the description in the console and see for yourself.

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