boska / rx-01

api with pagination on uitableview

rx-1

it has two UITableView fetch source from dependnt diffrent route of api

Cons

• There's still a confusing code between viewmodels
• Naming still too verbose
• Dependencies
• MVC way on navigation
• No test on Observables and Subjects

Pros

• Clean view model for cyclic api call

ManufacturerListViewModel have one input loadNextPage which is hooked by the uiscrollview scroll to bottom and have only one output show an array of Manufacturer

import RxSwift
import RxCocoa

extension Reactive where Base == ManufacturerListViewModel {
  var items: Driver<[Manufacturer]> {
    return base.manufacturers.asDriver(onErrorJustReturn: [])
  }
  var title: Observable<String> {
    return Observable.just("Manufacturers")
  }
}

struct ManufacturerListViewModel: ReactiveCompatible {
  let loadNextPage: AnyObserver<()>
  fileprivate let manufacturers: Observable<[Manufacturer]>

  init(autoService: AutoService = AutoService.shared) {
    let _loadNextPage = PublishSubject<Void>()
    self.loadNextPage = _loadNextPage.asObserver()
    manufacturers = _loadNextPage.throttle(0.5, scheduler: MainScheduler.instance)
      //map void event into index
      .enumerated()
      //flap map into api service
      .flatMap {
        autoService.getManufacturers(on: $0.index)  
      }.catchError { error in
        //handle error here sent to some subject? I really not sure yet
        return Observable.empty()
      //sorting
      }.map {
        $0.sorted(by: { $0.name <= $1.name })
      }
      //scan concat result
      .scan([], accumulator: { $0 + $1 })

  }
}

Prerequisites

• CocoaPods

$ sudo gem install cocoapods

then execute

pod install

open autofinder.xcworkspace

one last thing put your api key in Secret.plist

  AutoFinder/Resources/Secret.plist

This project is based on learning with

RxSwift - Reactive Programming with Swift