HackingWithSwift | The project source code for hackingwithswift.com

I checked this tutorial https://www.hackingwithswift.com/forums/swiftui/nested-json/4018 to fix a nested json issue.

My JSON source has changed from

The problem has been solved by 'hackingwithswift' website

Just follow the steps on the link! "https://www.hackingwithswift.com/books/ios-swiftui/one-to-many-relationships-with-core-data-swiftui-and-fetchrequest"

original ask

I would like to use elements of [relationship]
But whatever I try, it doesn't work..
There is something, what I missed and, sadly I don't know what that would be until now :/

First of all, I want to show my core data model and code.

Core Data Model Image

Entity: Page, Attribute: name(String), relationship: toCard
Entity: Card, Attribute: title(String), price(Double), relationship: toPage

Scenario: Page has multiple cards
One to Many (One page to many cards)

I have a class A that has a "to many" relationship with B. A and its Bs are fetched from a REST endpoint, we use this approach to create the objects.

A has a unique ID and some other properties (not shown in the example). B has an ID (bID) that is unique when combined with A, and a relationship to A called a. For A the constraint is "uniqueID". For B, the constraint is "a, bID" - we want each B to only exist for each combination of A and bID. The delete rule for A to its Bs is "Cascade". The merge policy for the context and all child contexts is NSOverwriteMergePolicy.

The code looks something like this:

I'm using a UIHostingController to embed ContentView inside ViewController. I want to change the name of ContentView's name when the "Change name" button is pressed. Here's my code:

How can I add hyperlinked text in a UITextView so that when it is clicked, a custom function in my app is called. Basically, my intention is to show a little popup window that gives more information on the clicked-upon word(s), similar to how Wikipedia works –

I read in this Hacking With Swift article that you can "use custom URL schemes, e.g. yourapp://" in attributed text, but I'm confused how yourapp://... links to a particular function within your app? What would my URL be?

The code they talk about in the article is:

I want to crop out a portion of a view. I followed this article: "How to mask one UIView using another UIView", and this is my code currently:

I'm learning how to make games in iOS, so I decided to replicate the first level of Mario Bros using my own assets, just to learn how to make them as well.

The issue I'm having right now is that, when creating the scrolling background, using this formula I found on Hacking with Swift, I keep getting a line in between my images.

I've checked that my images have no border in the AI file. (The images are the ones above)

I am following this tutorial on Coordinator pattern, and so far I have it going through creating the coordinator and running the start() from app delegate. But then calling a function on that coordinator doesn't work, because suddenly the coordinator var is nil. It seems that the initial view controller that is shown is not the one coming from the coordinator.start() but rather the one from the storyboard entry point. I did disable the Main in the main interface of the projects target.

AppDelegate:

I am trying to reset my ScrollView when the user selects a tab. The problem is all the tutorials are for buttons nested inside the ScrollView. My ScrollView is completely separate from where I need to tap to reset the ScrollView.

I found this tutorial - https://www.hackingwithswift.com/forums/swiftui/have-a-button-outside-of-scrollviewreader-be-able-to-scroll-the-scrollview-to-a-position/2741

Yet I get the error "Cannot find proxy in scope".