如何使基本类型属性为可选? [英] How to make primitive type properties Optional?

问题描述

我想在JSONModel类中添加一些原始属性选项.请参见下面的代码.

I want to make some primitive properties option in my JSONModel classes. Please see the code below.

#import "JSONModel.h"

@protocol GreenModel <NSObject>
@end

@interface MyModel : JSONModel

@property (nonatomic, assign) NSInteger<Optional> objId;
@property (nonatomic, strong) NSString *name;
@end

有人可以建议实现这一目标的方法吗?

Can anybody suggest a way to achieve this?

推荐答案

您可以使用propertyIsOptional:来做到这一点.只需对要设置为可选的属性名称返回YES.

You can do this by using propertyIsOptional:. Just return YES for the names of the properties you want to make Optional.

https://github.com/icanzilb/JSONModel#make-all-model-properties-optional-avoid-if-possible

+(BOOL)propertyIsOptional:(NSString*)propertyName
{
  if ([propertyName isEqualToString: @"objId"]) return YES;
  return NO;
}

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