ios - RestKit CoreData 一对多关系映射，To Many 部分不起作用

Question

我正在使用 RestKit 0.20 映射 2 个实体。存在一对多关系。

老师<->>学校类(class)

这是老师.h

@class SchoolClass;

@interface Teacher : NSManagedObject

@property (nonatomic, retain) NSString * firstName;
@property (nonatomic, retain) NSString * lastName;
@property (nonatomic, retain) NSNumber * teacherId;
@property (nonatomic, retain) NSSet *teachesClass;
@end

@interface Teacher (CoreDataGeneratedAccessors)

- (void)addTeachesClassObject:(SchoolClass *)value;
- (void)removeTeachesClassObject:(SchoolClass *)value;
- (void)addTeachesClass:(NSSet *)values;
- (void)removeTeachesClass:(NSSet *)values;

@end

这是 SchoolClass.h

@interface SchoolClass : NSManagedObject

@property (nonatomic, retain) NSString * classCodeId;
@property (nonatomic, retain) NSString * classDesc;
@property (nonatomic, retain) NSString * classRoom;
@property (nonatomic, retain) Teacher *classTeacher;

@end

关系映射的代码是:

[classMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:@"teacher" toKeyPath:@"classTeacher" withMapping:teacherMapping]];

结果是在 SchoolClass 对象中，正确添加了 classTeacher 属性。但是在 Teacher 对象中，teachesClass 属性都是空的。这是预期的行为还是我错过了什么？

谢谢 雷

Answer 1

现在问题不知何故消失了。所有的关系现在都运转良好。不确定到底发生了什么。也许是因为我在更改了 json 后对模拟器进行了重置。以前 json 结果有一个问题，导致双方的关系出现问题。修复后，SchoolClass 对象很好，但 Teacher 对象有关系问题。现在都很好。