ios - magical record delete one to many relationship all children -

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ios - magical record delete one to many relationship all children -

i have 1 many relationship teacher students. want delete students of given teacher. utilize code this:

[student mr_deleteallmatchingpredicate:[nspredicate predicatewithformat:@"teacher == %@" argumentarray:@[teacher]]];

... deletes given teacher. how prepare this?

i fixed changing delete rule "cascade" "no action".

ios objective-c core-data magicalrecord

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