Logic to subscribe to categories and question about iteration

@coffeeee wrote:

Hey,

I am using a sectionSelect to select particular categories to subscribe to. Another view would only list items of the selected categories.

So far, I simply determine a subscription based on a “subscribed = 1” element for a particular category

0: {id: 0, cat: "A", subscribed: 0}
1: {id: 1, cat: "B", subscribed: 1}
2: {id: 4, cat: "C", subscribed: 0}

So now my ionChange function returns a list of objects the user wants to update his subscription to. Like the list above. So now I would first have to remove all other active subscriptions by setting subscribed to 0 for all categories, and in another go update all subscriptions to 1 for the selection. I do this in the following manner:

  updateClick($event){
    this.myItemProvider.clearSubscriptions();
    let i = 0;
    $event.forEach((cat) => {
      this.myItemProvider.setSubscription($event[i].id);
      i++;
    });
    }

I wondered if there is a more beautiful approach for that, and if I would run into any issues with that.

Furthermore, is there a more modern approach to iterate through the objects other than foreach with an manually incrementing i++?

Thanks in advance!

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