Primary Key issue on iOS8 implementation of IndexedDb

Question

The issue is when you have two different object stores in the same indexeddb, primary key values appear to be \"shared\" across all stores.

Answer 1

I can confirm that iOS8 is definitely buggy here. I tried a few workarounds, but the best I can suggest is a primary key that combines some unique string, like the name of the objectStore, with a number. So for example, given two objectStores called people and notes, I'd store data with keys like so:

people/X notes/X

You can set X manually, or, use the .count() method on the objectStore to find the count and add one. Here is an example:

//Define a person
var person = {
    name:"Ray",
    created:new Date().toString(),
}

//Perform the add
db.transaction(["people"],"readwrite").objectStore("people").count().onsuccess = function(event) {
    var total = event.target.result;
    console.log(total);
    person.id = "person/" + (total+1);

    var request = db.transaction(["people"],"readwrite").objectStore("people").add(person);

    request.onerror = function(e) {
        console.log("Error",e.target.error.name);
        //some type of error handler
    }

    request.onsuccess = function(e) {
        console.log("Woot! Did it");
    }

}

Note that I specified keyPath of "id" for this OS.