I currently have a production app that uses CloudKit I always struggle with testing the data within the development container and I was wondering if someone could share their current workflow. What is your current workflow when testing apps that use CloudKit, do you use your regular Apple User account for testing, or you use separate account? My concern is because I use my production app on a daily basis using my regular Apple user account, so I would like to keep the production iCloud data intact. In other words, I have my app on my phone with real data and now I need to test the app because there are some CloudKit syncing issues so I have the following questions. Can I connect my phone with production data to Xcode and use my regular Apple account for testing purposes? Will I be able to see the testing data in the CloudKit console? Will the production data merge with the testing data? I actually created a second Apple account thinking that I could use it for testing but logging off and logging back on to iCloud in your iPhone it's a pain, is this really what needs to be done? Any ideas would be greatly appreciated. Thanks

In WWDC2020, the video "Synchronizing a local store to the cloud" shows some data fields in the left column of the dashboard, such as CD_post, CD_Tag, where did these come from? need to create it manually on dababoard, or it synchronize from the demo app ? why do I run this corresponding demo, but there are no data fields in the dashboard of my account and my dashboard of my account is almost empty?

When I logged into my cloudkit console to inspect the database for some debugging work I couldn't access the private database. It keeps saying "failed to access iCloud data, please signi n again". No matter how many times I sign in again, whether with password or passwordless key it keeps saying the same thing. It says that message when I click on Public database, and private and shared databases are below it. I only noticed this a couple of days ago. It's done this in the past, but I eventually got back into the database but I don't know what changed to make it work.

I am using the public cloud database to store my application data, this data is accessed by all users of the application, but at some point it is necessary for a user who did not create a respective data in the database to delete it, but from what I read in the documentation this is not possible, only with a permission. How do I allow a user to change or delete any data created by another user in the public cloud database?

Hello, We have a problem and we don't know how to solve it. Our application uses CloudKit databases. We can no longer access the CloudKit databases. When we connect to the CloudKit console and select CloudKit Database, we get the message "No Containers". However, the application continues to work by downloading files located on CloudKit Database. How can I modify CloudKit Database data?

Hello, everyone! I'm currently working in creating a new web app that will replicate the functionalities of an existing iOS and Mac app. However, since those apps rely on CloudKit to manage all user information, we decided on using CloudKit JS as our backend for our web app. The framework we chose for developing our frontend is React. The question is, since this documentation only mentions the CloudKit JS usage through a CDN (embedded directly in the HTML file) I wanted to ask: is there a "suggested" method for using CloudKit JS in a React project other than importing the CDN in the main html file? in case not, should we use a "traditional" server to access data like they suggest in this thread? All your help will be very much appreciated. Best regards, Eduardo

I'm building two apps. They both share a CloudKit container. One application is designed to edit the contents of the public database regardless of who a record's creator is. The other should only be allowed to read from the public database. Since CloudKit is largely a client-side framework it's easy enough to enforce this client side. Are there any additional guarantees that iCloud provides to enforce what the clients are signed to do? Or is there a risk of having some actor tamper with the public database that isn't using the editing application?

Afternoon all, I am starting out and want to store data in the App, some will be user specific and some general. So I have a new developer account which should have CloudKit permissions. I am just trying to make any of the most basic example applications work, but keep hitting issues. I create an App, select CloudKit and SwiftData. When I go into the signing and capabilities I select the Team which has the developer account. Then the CloudKit is selected as I clicked it when creating the project, but no Container is selected. I create a Container using the +, it names it iCloud.com.mydomain.AppName. However it is coloured in Red text. I press the refresh and then it turns into black text, the Push Notifications appear all populated for 1 second then all disappear. I have nothing under Push now, only a Trashcan button. The Container is now selected however. Is this an issue that the Push notifications items appeared then vanished? When I then try to run the app, using any of the many attempts I have had with simple code samples, it always fails to create the Container, usually with an error like this: error: Store failed to load. <NSPersistentStoreDescription: 0x600000c79ce0> (type: SQLite, url: file:///Users/cal/Library/Developer/CoreSimulator/Devices/6D2BA1B3-C7CA-499D-A280-AFF4C5E98180/data/Containers/Data/Application/B9CD5E35-08BD-44CC-A72D-EB170E3691C6/Library/Application%20Support/default.store) with error = Error Domain=NSCocoaErrorDomain Code=134060 "A Core Data error occurred." UserInfo={NSLocalizedFailureReason=CloudKit integration requires that all attributes be optional, or have a default value set. The following attributes are marked non-optional but do not have a default value: Item: name} with userInfo { NSLocalizedFailureReason = "CloudKit integration requires that all attributes be optional, or have a default value set. The following attributes are marked non-optional but do not have a default value:\nItem: name"; If I go into the CloudKit database view on Apple, I see the Container listed, albeit it is marked as not deployed to production. To try to remove my newbie issues I have used many web examples, the most recent of which was the "A Beginner’s Guide to SwiftData with a to-do app" from medium.com, which should just work really, snipped from Item.swift below but I have tried several other simple examples which all give the same issue: import Foundation import SwiftData @Model class Item: Identifiable { var name: String init(name: String){ self.name = name } } Any ideas really appreciated. Thank you

Very simple one. how do I add “create“ permissions for my CloudKit security roles. For some reason “create“ is greyed out when I try to check the box for _creator

Is there any tool to automatically migrate data & data structure from Google Firebase to CloudKit?

Hello, I have a couple of questions about the CloudKit public database: Is it possible to control what authenticated users can write to the database on the server side? I know I could write logic in my iOS app to prevent to prevent certain actions, like uploading more data than I want to allow, but traditionally one would write server-side checks too. Even if I don't use CloudKit JS, it still seems like a malicious user could intercept network traffic and interact directly with iCloud to bypass any validations I've included in my app. Is it possible to block a user from using my app and interacting with CloudKit entirely? Along the same lines as question 1, I may want to block a malicious user from interacting with my public database, particularly writing to it. Is it common practice to write configuration settings to the public database as an administrative user and to have the app look for these known records? For example, I could add records to a configuration zone via the iCloud dashboard and have my app read them at startup to do things like enable/disable signups. Thanks for any help and guidance on these issues!

I have set up a CKQuerySubscription in the default zone that sends a Push notification every time a record meeting the given criteria is deleted in a public CloudKit database. However, the notification is only sent when I delete the record via the CloudKit Dashboard and not when I delete a record programmatically. I have tried creating a record with User A on a device and then having that record deleted by User B on a different device but it doesn't result in User A getting notified. Additionally, the only case where the notification gets sent is on a device that is signed in with the iCloud account that I use for CloudKit Console. In other words, when I delete a record that was created by a user with a different iCloud account than the one I use for the CloudKit Console the notification does not get sent to that device - it's only successful on the device with the CloudKit Console iCloud account. What I expect to happen is the subscription to fire when the record in question is deleted regardless of how and by whom it is deleted. Is this possible? Any help would be appreciated.

I've found old forum posts that reference CloudKit pricing based on usage (after exceeding the 'Free' tier). However, it doesn't seem that Apple has any information on any of their website that indicate what that pricing is, or otherwise the limits of a free tier. The closest I've found to this is on https://developer.apple.com/icloud/cloudkit/ where it says, "Store private data securely in your users’ iCloud accounts for limitless scale as your user base grows, and get up to 1PB of storage for your app’s public data." So does this mean that the only CloudKit limits now are: Private data: dependent on individual user's remaining iCloud storage space Public data: 1 PB Request count/day: unlimited Download usage/day: unlimited I'm being a little sarcastic, but at the same time, if there are still limits and a pricing structure, I'm really scratching my head as to why that doesn't seem to be published anywhere. Ultimately, I'm trying to find the best, reliable public asset storage with cross-device usage (iOS, tvOS) solution and am weighing CloudKit versus other cloud storage solutions and their costs. Side note: I'm kinda confused why CloudKit provides public asset storage in the first place, since I thought On-Demand Resources was intended to fill that gap (and ODR does have storage limits too).

In our team we have two apps A and B, unfortunately app B was released with iCloud entitlement with selected container ID of the app A. It lead to a problem that our app A displays in iCloud "Manage Storage" list on iOS as app B. Because of that people are loosing all of theirs data as they thing it is app A. App B stores uses only Key-Value storage in iCloud How can we override that name so it displays A again?

Hello! I would like my users to save short videos (under 30seconds 1080p) to the public database for all other users to download and view. Is this possible? Will I run into any storage pricing with Apple if I were to pursue this as my application backend? I am looking at other methods as well (user sharing from their private database) so I can implement video sharing. Is this feasible and worth pursuing?

I only used cloudkit private database in my application but the telemetry data shows 244 bytes of public database storage used. When I check my container I don't see any public stored data. I don't understand why this is happening. Can anyone help me?

I need to delete record types in the CloudKit Container. I tried clicking on "Delete Record Type" button at the bottom, but I can't click it. It won't let me delete them. I looked everywhere on the Dashboard for help, but I could not find any ways to delete them. The container is already deployed to production. Is there any way to delete the record types?