CODEWITHSUNDEEP
objective-cxcodecore-datarelationship
CodeLover
CodeLover

Reputation: 155

Add Object to relationship entity

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How would I add new MinorGoal to an existing goal? And how to fetch Goal's MinorGoals?

Thanks

Upvotes: 0

Views: 103

Answers (1)

Arthur Shinkevich
Arthur Shinkevich

Reputation: 801

When you generate NSManagedObject Entities, Goal class will have an NSSet called toMinorGoal (assuming, your toMinorGoal is unordered relationship). Also, XCode will generate 4 accessory methods to add/remove MinorGoal objects to/from relationship.

If you need to fetch MinorGoals object, you would just need to get Goal object and then access its toMinorGoals NSSet that will contain all of its MinorGoal objects. Alternatively, you can just fetch MinorGoal objects, but these will return every single one of them (if you don't specify how many you want).

This is an approximate example of generated accessors XCode will provide you with:

- (void)addtoMinorGoaObject:(MinorGoal *)value;
- (void)removetoMinorGoalObject:(MinorGoal *)value;
- (void)addtoMinorGoal:(NSSet *)value;
- (void)removetoMinorGoal:(NSSet *)value;

Upvotes: 1

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