objective c - iOS Realm cascade delete -


my models are: first model - job: idx, title, description

second model - specialization: idx, title, rlmarray<job> jobs

what should if want delete job , i'd delete specs related job. in advance. code is:

[self.storage beginwritetransaction]; rlmresults *specs = [mbspecialization objectsinrealm:self.storage where:@"%@ in jobs", job];                 (mbspecialization *spec in specs) {                     [self.storage deleteobjects:spec];                 } [self.storage deleteobject:job]; [self.storage commitwritetransaction];

if want delete specializations containing job being deleted if still have other jobs:

[self.storage beginwritetransaction]; [self.storage deleteobjects:[job linkingobjectsofclass:mbspecialization.classname forproperty:@"jobs"]]; [self.storage deleteobject:job]; [self.storage commitwritetransaction];

alternatively, may want clean specializations no longer have jobs after 1 deleted:

[self.storage beginwritetransaction]; [self.storage deleteobject:job]; [self.storage deleteobjects:[mbspecialization objectsinrealm:self.storage where:@"jobs.@count = 0"]]; [self.storage commitwritetransaction];

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