我有这堂课:
@interface MovieStatus : NSObject
@property (nonatomic, strong) NSNumber* seen;
@property (nonatomic, strong) NSNumber* watchlist;
@end
其中两个属性表示可选的可空布尔值。我通过RKObjectManager
使用RestKit将此对象发送到服务器并创建了适当的映射。但在序列化对象时,我无法从POST数据中跳过该属性。
例如,此代码:
RKLogConfigureByName("*", RKLogLevelTrace);
RKObjectManager* manager = [RKObjectManager managerWithBaseURL:[NSURL URLWithString:@"http://www.example.com/v1"]];
manager.requestSerializationMIMEType = RKMIMETypeJSON;
RKObjectMapping* requestMapping = [RKObjectMapping requestMapping];
[requestMapping addAttributeMappingsFromArray:@[@"seen", @"watchlist"]];
RKRequestDescriptor* requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:requestMapping objectClass:[MovieStatus class] rootKeyPath:nil method:RKRequestMethodPOST];
[manager addRequestDescriptor:requestDescriptor];
RKRoute* route = [RKRoute routeWithClass:[MovieStatus class] pathPattern:@"status" method:RKRequestMethodPOST];
[manager.router.routeSet addRoute:route];
MovieStatus* status = [[MovieStatus alloc] init];
status.seen = @(YES);
[manager postObject:status path:nil parameters:nil success:nil failure:nil];
正在发送JSON:
{
"seen": true,
"watchlist": null
}
我想发送的地方:
{
"seen": true
}
任何人都可以指出我如何实现它?
答案 0 :(得分:9)
我通过将映射的assignsDefaultValueForMissingAttributes
设置为NO
来解决它:
requestMapping.assignsDefaultValueForMissingAttributes = NO;
现在,JSON请求不包含null
个值。