如何在iOS Mantle模型子类中设置默认值

@interface Entity ()
  @property (assign) int searchTotalPagesAll;
  @property (assign) int searchTotalPagesIdeas;
@end


@implementation Entity
  + (NSDictionary *)JSONKeyPathsByPropertyKey {
return @{
         @"Id": @"entity.id_entity",
         @"name": @"entity.name",
         @"coverage" : @"entity.coverage",
         @"id_city": @"entity.Id_City",
         @"cityName":@"entity.city",
         @"countryName":@"entity.country",
         @"stateName":@"entity.district",
         @"countryCode": @"entity.countrycode",
         @"keyword1": @"entity.key1",
      ... etc

由于地幔示例没有 init 方法，我应该在哪里初始化这些属性（searchTotalPagesAll、searchTotalPagesIdeas）作为默认值？该模型具有需要此属性和其他几个属性的内部方法。

无论您是从 JSON 还是其他方式创建 Mantle 模型，该模型都会使用以下命令进行初始化[-initWithDictionary:error:] https://github.com/Mantle/Mantle/blob/95c4477021234daee4802423ea2f45a9cc4c0ece/Mantle/MTLModel.m#L92。在模型类中，您可以将默认值添加到用于初始化模型的值中：

- (instancetype)initWithDictionary:(NSDictionary *)dictionaryValue error:(NSError *__autoreleasing *)error {
    NSDictionary *defaults = @{
        @"searchTotalPagesAll" : @(10),
        @"searchTotalPagesIdeas" : @(5)
    };
    dictionaryValue = [defaults mtl_dictionaryByAddingEntriesFromDictionary:dictionaryValue];
    return [super initWithDictionary:dictionaryValue error:error];
}