How to add more attributes to existing core data entity?

Question

I have a project that is using core data , i need add more attributes(Columns) to existing entity (Column) , if i manually add attribute to data model app crash and it is due t

Answer 1

If you want to change attributes in your existing code data model then you need to follow some steps... lightweight-core-data-migration

Or this would help you lot how-to-perform-a-lightweight-core-data-migration