ios - 如何使用 Mantle 在 NSArray 中指定子对象类型

Question

如果我有像这样的字典

{
  name: "Bob",
  cars: [
    { make: "ford", year: "1972" },
    { make: "mazda", year: "2000" }
  ],
}

还有两个模型:

@interface CarModel : MTLModel

@property (nonatomic, strong) NSString *make;
@property (nonatomic, strong) NSString *year;

@end

@interface PersonModel : MTLModel

@property (nonatomic, strong) NSString *name;
@property (nonatomic, strong) NSArray *cars;

@end

如何使用 Mantle 使我的人物模型中的汽车阵列成为 CarModels？

Answer 1

啊想通了。我需要添加一个私有(private)方法:

+ (NSValueTransformer *)carsTransformer
{
    return [NSValueTransformer mtl_externalRepresentationArrayTransformerWithModelClass:[CarModel class]];
}

并确保我使用了:

[PersonModel modelWithExternalRepresentation:dict];