# init(id:) Creates an event with an associated donation value. ``` init(id: String) ``` ## Parameters `id` Unique identifier for persisting the event and its donations. ## Discussion ### Creating an event Create an event when you want display a tip based on an action that can occur one or more times in your app (such as a user logging in). Then use [`donate()`](/documentation/TipKit/Tips/Event/donate()) to donate to the event when the action occurs, increasing the event count by one. ```swift struct LandmarkDetailView: View { let landmark: Landmark var body: some View { VStack { Text(landmark.name) Text(landmark.description) } .task { let donationInfo = DidViewLandmark(landmarkName: landmark.name) await Self.didViewLandmark.donate(donationInfo) } } static let didViewLandmark = Event(id: "didViewLandmark") } ``` ### Adding event rules Add tip display rules using the `#Rule` macro to prevent a tip from being displayed until an event has been donated a specific number of times. ```swift struct FavoriteLandmarkTip: Tip { var rules: [Rule] { // Tip will only display when the didViewLandmark event has been donated 3 or more times. #Rule(LandmarkDetailView.didViewLandmark) { $0.donations.count >= 3 } } } ``` ## Topics ### Properties [`var donations: [Tips.Event.Donation]`](/documentation/TipKit/Tips/Event/donations) Returns an events existing donations. ### Add Donations [`func donate() async`](/documentation/TipKit/Tips/Event/donate()) Donates an event with no associated `Donation` value. [`func donate(DonationInfo) async`](/documentation/TipKit/Tips/Event/donate(_:)) Donates an event along with its associated `Donation` value. [`func sendDonation((() -> Void)?)`](/documentation/TipKit/Tips/Event/sendDonation(_:)) Asynchronously donates an event with no associated `Donation` value. [`func sendDonation(DonationInfo, (() -> Void)?)`](/documentation/TipKit/Tips/Event/sendDonation(_:_:)) Asynchronously donates an event along with its associated `Donation` value. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)