iphone - How to add more attributes to existing core data entity? -


i have project using core data , need add more attributes(columns) existing entity (column) , if manually add attribute data model app crash , due context save used insert data table previously

plz .. thank you

if want change attributes in existing code data model need follow steps... please refer customizing-core-data-migrations

or lot how-to-perform-a-lightweight-core-data-migration


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