RxSwift - Filter data from tableview from UIPickerView

i try to filter data from my table View. When i select one value from picker View, The data suppose to filter based on the category and the table view should reload with filtered data.here i attach the code

struct RecipeList {let id: Intlet catid: Stringlet name: Stringlet description: Stringlet ingredient: Stringlet step: Stringlet image: Stringlet img: NSData//static var dataSource = BehaviorRelay(value: [RecipeList]())static var items = [RecipeList]()}

here how i fetch data to table View

func setupCellConfiguration() {  let recipeList = Observable.just(RecipeList.items)    recipeList        .bind(to: tableView            .rx            .items(cellIdentifier: RecipeListCell.Identifier,                   cellType: RecipeListCell.self)) { row, recipe, cell in                    cell.configureWithRecipe(recipe: recipe)    }    .disposed(by: disposeBag)}

Here how pick event on picker view

func setupRecipeTypePickerView(textField: UITextField) {    let pickerView = UIPickerView()    pickerView.selectRow(Int(self.selectedRecipeType) ?? 0, inComponent: 0, animated: false)    textField.inputView = pickerView    let recipeType = Observable.of(RecipeType.items)    recipeType.bind(to: pickerView.rx.itemTitles) { (row, element) in        return "\(element.name)"    }    .disposed(by: disposeBag)    pickerView.rx.itemSelected        .subscribe { (event) in            switch event {            case .next(let selected):                selected.row == 0 ? (self.isFilter = false) : (self.isFilter = true)                let recipeType = RecipeType.items[selected.row]                textField.text = recipeType.name                self.selectedRecipeType = recipeType.id                RecipeList.items.append(contentsOf: RecipeList.items.filter({$0.catid == recipeType.id}))            default:                break            }    }    .disposed(by: disposeBag)}

Here how append data from Core data to Model

    func getRecipeList() {    RecipeList.items.removeAll()    guard let appDelegate = UIApplication.shared.delegate as? AppDelegate else { return }    let managedContext = appDelegate.persistentContainer.viewContext    let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: Common.ENTITYNAME)    do {        let result = try managedContext.fetch(fetchRequest)        for data in result as! [NSManagedObject] {            let id = data.value(forKey: "id") as! Int            let catid = data.value(forKey: "catid") as? String ?? "1"            let name = data.value(forKey: "name") as! String            let description = data.value(forKey: "rdescription") as! String            let ingredient = data.value(forKey: "ingredient") as! String            let step = data.value(forKey: "step") as! String            let image = data.value(forKey: "image") as! String            let img = data.value(forKey: "img") as! NSData            let recipe = RecipeList(id: id, catid: catid, name: name, description: description, ingredient: ingredient, step: step, image: image, img: img)            RecipeList.items.append(recipe)        }       // RecipeList.dataSource.accept(RecipeList.items)    } catch {        print("Failed")    }}

I try alot solution from multiple sources, seems does not work. This is my first day learning RXSwift. Usually i didnt use RXSwift, i just simply, create variable for filtered data, then rereload the tableView