我有一个属性modificationDate,我Entity A.想在NSManagedObject保存时设置它的值.但是,如果我尝试在NSManagedObject willSave:方法中这样做,我会收到一个错误:
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Failed to process pending changes before save. The context is still dirty after 100 attempts. Typically this recursive dirtying is caused by a bad validation method, -willSave, or notification handler.' ***
所以,我想知道,设定价值的最佳方法是modificationDate什么？