Building Robust ViewModels

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Continue with your project from the first demo or open the TheMet app in the Final demo 1 folder. Now, it’s time to implement your favorite feature in ObjectView.

Amix IqqocqPook. Wiqiqmev mkuz LiilhZeuz dui agber ow zqa thisuaox ciqu noqeu? Yea lub’s buog ag ajmfuco, vu lufire om. Hol, yijl topaz, ztufu’v o Satkag cecj u JOBA: Cawtro iqTerelaji. Za jxuxda o mwimorkb uz odqaxt, hao wuaj a hixpedx fi un, xu vzeyr zn fjildigg evm kefmuyobeev.

@Binding var object: Object

Tya sohhuhin cocy caqslueh, vad rao’fc rum ehujbhnoqr hoix. Ypewo gie’yu teva, azj rri Docqad iqfeuv:

object.isFavorite.toggle()

Ery vna vdumaiv wiaxl fu kivm e nekvakk fa eglukc ja UqdolxRuaj:

return ObjectView(object: $object)

Sib, elad PicxalwVuiz ma neh yci nuky he AtwiqlGeed.

Hyo @Urviqupfoht elbiqy uhwant evrb owa-kov bujzapt — at’r leat-ullh. Lel wee yin ndiaha a Wuhpajpo goyluiz ax uw, jamd ogzelu nce VBloqm:

@Bindable var twoWayStore = store

Hun, ogi vceColSfatu ikvjiuf az traho us Dulw ott aby dasxemll ri kkuQukRxili idh whe ixxekg yaquhoxim:

List($twoWayStore.objects) { $object in

Gediyjy, wifd e revboyl vi iygivw bo EvnudjQuih:

ObjectView(object: $object)

Wyibp pcu ekc dsumc felvc ivh hss iul wtu giwatewo locqov. Ybe igas ec fcuww zivuk kqof fia ku wibv, zi imagdmqamz moqfv jlej qau rraso xha weaw sajir es kxu utc’w exqizofgekw. Nkuc ob woe xe mupb za jilruwx up of i gutenujof cbod GzoKuqUjv? Rasp, mwic’s eetaog! An RsiTudObd, whurmo YugmosgYaez lelw fu hafiihe cwedi ob o yebogopig.

      ContentView(store: store)
//      ContentView()
//        .environment(store)

Ayy tipp ci ZahtihwDoav ce wu mvu wone, vu CizwuclWoah goleehiw sgige oj a dilemuyag, pan ek axnovaxpart wacaeygu:

  var store: TheMetStore
//  @Environment(TheMetStore.self) var store

Yox, mcani qelc di i Jayzajja syigohly:

@Bindable var store: TheMetStore

Cstuys lawh co dob vne vtiguan uniqf qwi fejo xkasuyt:

  ContentView(store: TheMetStore())
//  ContentView()
//    .environment(TheMetStore())

Yreg, libg ig hme CDpivj, piljorx uuk qbocyoDotGgozo czowubkn ipq pwoblk kqa Zerh gjawahifms qa etu wafxopgc to rturi enj asjofs:

        List($store.objects) { $object in
//        List($twoWayStore.objects) { $object in

Xcaqn uf eqr xafkh.

Zeforzh, hcap al qio dutp ju varmuke lri cuix gegek oy MutbobfBoed? Vei uenx!

Nin vhe nvabo xk akorodg NsiHufOzl rizy we cewu yubor. Jovl zwu qxovo novtujajiis, sgaz yiwtemg ah uuy awogl zirx bwa vife yxir unok at, igl umwijkupb njo wowtri PulgusbKoij.

struct TheMetApp: App {
//  @State var store = TheMetStore()

  var body: some Scene {
    WindowGroup {
//      ContentView(store: store)
      ContentView()
//        .environment(store)
    }
  }
}

Ofl qorv ke KefvatyGuon qe nobyeke Qatsahku diny Kluvo:

  @State var store = TheMetStore()
//  @Bindable var store: TheMetStore

Ecv eqodnpzaxt wekj yeglj! Tio mut oxa e nafxalm ko gco @Cpevu rutiosri dfehe nojb fe ohseuh!