Trouble With SearchBar and Search Bar Controller Due to Depreciation of SearchDisplayController - json

Question

I would like some help with the search bar functionality. I am stuck and not sure where to take it from here. I am trying to update the tableview when search text word is contained in a recipe title. I am not sure how to do this because of the depreciated searchDisplay controller. Help would be appreciated.
import UIKit
import SwiftyJSON
class Downloader {
class func downloadImageWithURL(_ url:String) -> UIImage! {
let data = try? Data(contentsOf: URL(string: url)!)
return UIImage(data: data!)
}
}
class ViewController: UIViewController,UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate,UISearchDisplayDelegate{
#IBOutlet weak var recipeTable: UITableView!
// search functionality Need help with my search functionality
var filteredRecipes = [Recipe]()
func filterContentForSearch(searchText:String) {
// need help here
self.filteredRecipes = self.recipes.filter({(title:Recipe) -> Bool in
return (title.title!.lowercased().range(of: searchText.lowercased()) != nil)
})
}
private func searchDisplayController(controller: UISearchController!, shouldReloadTableForSearchString searchString: String!) -> Bool {
self.filterContentForSearch(searchText: searchString)
return true
}
//end search parameters
// tableview functionionalitys
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if tableView == searchDisplayController!.searchResultsTableView {
return filteredRecipes.count
}else{
return recipes.count
}
// recipeTable.reloadData()
}
// tableview functionalities
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! RecipeTableViewCell
if tableView == self.searchDisplayController!.searchResultsTableView{
//get images from download
DispatchQueue.main.async { () ->Void in
cell.imageLabel.image = Downloader.downloadImageWithURL(self.filteredRecipes[indexPath.row].imageUrl)
}
cell.recipeLabel.text = self.filteredRecipes[indexPath.row].title
recipeTable.reloadData()
}else{
//get image from download
DispatchQueue.main.async { () ->Void in
cell.imageLabel.image = Downloader.downloadImageWithURL(self.recipes[indexPath.row].imageUrl)
}
cell.recipeLabel.text = recipes[indexPath.row].title
}
//recipeTable.reloadData()
return cell
}
// structs for json
struct Root : Decodable {
let count : Int
let recipes : [Recipe]
}
struct Recipe : Decodable { // It's highly recommended to declare Recipe in singular form
let recipeId : String
let imageUrl, sourceUrl, f2fUrl : String
let title : String?
let publisher : String
let socialRank : Double
let page : Int?
let ingredients : [String]?
}
//recipes is array of Recipes
var recipes = [Recipe]() // array of recipes
//unfiltered recipes to put into search
fileprivate func getRecipes() {
let jsonURL = "https://www.food2fork.com/api/search?key=264045e3ff7b84ee346eb20e1642d9d9"
//.data(using: .utf8)!
guard let url = URL(string: jsonURL) else{return}
URLSession.shared.dataTask(with: url) {(data, response , err) in
if let response = response as? HTTPURLResponse, response.statusCode != 200 {
print(response.statusCode)
return
}
DispatchQueue.main.async {
if let err = err{
print("failed to get data from URL",err)
return
}
guard let data = data else{return}
//print(String(data: data, encoding: .utf8))
do {
let decoder = JSONDecoder()
decoder.keyDecodingStrategy = .convertFromSnakeCase
let result = try decoder.decode(Root.self, from: data)
self.recipes = result.recipes
//print(result.recipes)
self.recipeTable.reloadData()
}catch let jsonERR {
print("Failed to decode",jsonERR)
}
}
}.resume()
}
override func viewDidLoad() {
super.viewDidLoad()
//recipeTable.reloadData()
//search bar
//filteredRecipes = recipes
//call json object
getRecipes()
}
}

Answer 1

You could take this approach:
Add a Boolean variable to indicate whether searching or not
var searching: Bool = false
Use this for numberOfRowsInSection for the tableview
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if searching {
return filteredRecipes.count
} else {
return recipes.count
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! RecipeTableViewCell
var recipe: Recipe
if searching {
recipe = filteredRecipes[indexPath.row]
} else {
recipe = recipes[indexPath.row]
}
DispatchQueue.main.async { () ->Void in
cell.imageLabel.image = Downloader.downloadImageWithURL(recipe.imageUrl)
}
cell.recipeLabel.text = recipe.title
return cell
}
And add this for the searchBar (set searching for other funcs like searchBarCancelButtonClicked)
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
if searchBar.text == nil || searchBar.text == "" {
searching = false
filteredRecipes.removeAll()
view.endEditing(true)
} else {
searching = true
filteredRecipes = recipes.filter{$0.title.contains(searchBar.text!)}
}
tableView.reloadData()
}