问题
I try to create a JSON file out of my custom Object with the JSONModel framework for iOS. I get the Error:
-[JSONModel.m:1077] EXCEPTION: Invalid type in JSON write (RegisterBuyerDataOption)
-[JSONModel.m:1077] EXCEPTION: Invalid type in JSON write (RegisterBuyerDataOption)
-[JSONModel.m:1077] EXCEPTION: Invalid type in JSON write (RegisterBuyerData)
registerBuyerData.h
@interface RegisterBuyerData : JSONModel
@property (nonatomic, strong) NSString *buyerDataID;
@property (nonatomic ) RegisterBuyerDataType type;
@property (nonatomic, strong) NSString<Optional> *title;
@property (nonatomic ) BOOL required;
@property (nonatomic, strong) NSString *value;
@property (nonatomic) NSNumber<Optional> *price;
@property (nonatomic) NSNumber<Optional> *availability;
@property (nonatomic, strong) NSArray<RegisterBuyerData*> *fields; //array of more RegisterBuyerData
@property (nonatomic, strong) NSArray<RegisterBuyerDataOption*> *options; //key,value array for dropDown
@property (nonatomic, strong) NSArray *parentValue;
@property (nonatomic, strong) NSArray<RegisterBuyerData*> *children; //array of more RegisterBuyerData but only for special selected value of an options field
- (BOOL) isAvailableForUser;
@end
registerBuyerData.m
@implementation RegisterBuyerData
- (BOOL) isAvailableForUser{
return (!_availability || [_availability integerValue] > 0 );
}
+(JSONKeyMapper*)keyMapper
{
return [[JSONKeyMapper alloc] initWithDictionary:@{@"id": @"buyerDataID",@"value": @"value"}];
}
@end
RegisterBuyerDataOption.h
@interface RegisterBuyerDataOption : JSONModel
@property (nonatomic, strong) NSString *key;
@property (nonatomic, strong) NSString *value;
@property (nonatomic, strong) NSNumber *price;
@property (nonatomic, strong) NSNumber *availability;
- (BOOL) isAvailableForUser;
@end
Is it not possible to create a JSON String recursively? When I call the toJSONString method I get these Errors.
回答1:
@property (nonatomic, strong) NSArray<RegisterBuyerData*> *fields;
should be
@property (nonatomic, strong) NSArray<RegisterBuyerData> *fields;
So get rid of the extra *
and try again.
Edit:
Oh, I see. It seems like you haven't declared the types you want to cascade as protocols. So do the following
RegisterBuyerDataOption.h
@protocol RegisterBuyerDataOption @end;
@interface RegisterBuyerDataOption : JSONModel
@property (nonatomic, strong) NSString *key;
@property (nonatomic, strong) NSString *value;
@property (nonatomic, strong) NSNumber *price;
@property (nonatomic, strong) NSNumber *availability;
- (BOOL) isAvailableForUser;
@end
registerBuyerData.h
@protocol RegisterBuyerData @end;
@interface RegisterBuyerData : JSONModel
@property (nonatomic, strong) NSString *buyerDataID;
@property (nonatomic ) RegisterBuyerDataType type;
@property (nonatomic, strong) NSString<Optional> *title;
@property (nonatomic ) BOOL required;
@property (nonatomic, strong) NSString *value;
@property (nonatomic) NSNumber<Optional> *price;
@property (nonatomic) NSNumber<Optional> *availability;
@property (nonatomic, strong) NSArray<RegisterBuyerData*> *fields; //array of more RegisterBuyerData
@property (nonatomic, strong) NSArray<RegisterBuyerDataOption*> *options; //key,value array for dropDown
@property (nonatomic, strong) NSArray *parentValue;
@property (nonatomic, strong) NSArray<RegisterBuyerData*> *children; //array of more RegisterBuyerData but only for special selected value of an options field
- (BOOL) isAvailableForUser;
@end
来源:https://stackoverflow.com/questions/35041651/serialize-a-custom-object-with-jsonmodel