Great explanation of the notion of containers, schemas and configs. Quite comparable to CoreDate at this point. As usually Stewarts development is a great learning experience. On to the next one.
Hi Stewart, I just wanted to say thank you! With you expertise and you nice way to explain things you're helping me very much! Keep up the exceptional work, you are one of a kind here on youtube!
Hey Stewart, has the behavior regarding persistance of enums in SwifData changed recently? In the application I'm working on I have an enum that has String as rawvalues, and String is precisely the type I see on my database table without having to have set .Rawvalue in the stored property inside the model class
Most excellent Stewart. Thanks for this great continuing training. One question, though: does the rating in the preview match the rating on the simulator? In my code, I notice the preview rating is one less star. Thanks.
@@StewartLynch I’ve gone back to it tonight and it’s completely resolved. It was an error next to the struct AppName: App { line. Probably ok, just got me wondering if this pattern needed to consider performance for a real world app. Thank you for taking the time to reply!
Compare your code to the my completed branch on my Git repository. You might also do a Command SHift K on Xcode. That sometimes clears up issues in Preview too.
Great video. Works as a charm except when I try to archive the product, the compiler throws the error “No exact matches in call to initializer”. After I clicked on error the XCode navigates me to the #Preview section. The error disappeared and grey message “Candidate has partially matching parameter list…” appears instead. This behaviour prevents the deployment. Any suggestion will be highly appreciated.
Amazing Stewart ! I'm in getting skills in iOS dev and it help me a lot ! Maybe a stupid question, but I want to save settings of app in iCloud, therefore I expected to save the in swift data. So I will have to create a new Model. therefore, how to handle different models in a preview. Maybe there is something I don't understand. Thanks again !
@@StewartLynch Thanks Stewart. I added my new model in the schema of the init method to add it to the container: let schema = Schema([Entry.self, AppSettings.self]) It works well. It's just about Preview. #Preview { let preview = Preview(Entry.self, AppSettings.self) preview.addExamples([Entry.sampleEntries), AppSettings.sampleAppSettings]) return Home() .modelContainer(preview.container) } I get error at #Preview level : "Type of expression is ambiguous without a type annotation"
The preview thing is a handy trick, but it doesn't work when you have nested models. Like a parent model that has an array of child models. Because it seems like all children need to be insert()'d or save()'d first otherwise SwiftData crashes.
