My Core Data managed objects (instances) all have their own index. Naturally, when I add an object, I want to set its index to the highest index value so far, + 1. This should be done in - awakeFromInsert.
However, when I perform a fetch request from there, a second (new) item appears in the table (instead of just one). This can't be right.
So, the question is how to keep track of the maximum index in a correct way.
Should I maintain a class variable for the maximum index (updated on awakeFromFetch / -Insert)? If so, how do I keep track of removed objects (say when the object with the highest index gets removed)?
Suggestions appreciated.
Best regards,
Arthur C.
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