JSONModel Optional and Ignore are not respected - ios

Question

I have these properties in the header file.
#property (copy, nonatomic) NSString<Optional>* guidId;
#property (copy, nonatomic) NSDate* created_at;
#property (copy, nonatomic) NSNumber<Ignore>* longitude;
#property (copy, nonatomic) NSNumber<Ignore>* latitude;
#property (copy, nonatomic) NSNumber* altitude;
#property (copy, nonatomic) NSNumber* relative_altitude;
#property (copy, nonatomic) NSNumber* value;
#property (copy, nonatomic) NSString<Optional>* scale;
#property (copy, readonly, nonatomic, getter=getReadingTypeDescription) NSString* name;
#property (assign, nonatomic) WEEReadingType readingType;
#property (copy, nonatomic) NSString* name;
#property (strong, nonatomic) NSMutableArray* location;
Though it is strange Optional and Ignore are not respected.
In the implementation file I override these two methods.
// This one because when converting to JSON from Model I need specific properties only and Ignore is not for this purpose
- (NSString *)toJSONString
{
return [super toJSONStringWithKeys:
#[
#"guidId",
#"location",
#"altitude",
#"relative_altitude",
#"scale",
#"name",
#"value",
#"created_at"
]];
}
// And this one for the enum property that I want to ignore, but I found out I get an error when using [JSONModel arrayOfModelsFromDictionaries:json error:&error] that Optional or Ignore is not respected.
+ (BOOL)propertyIsIgnored:(NSString *)propertyName
{
if ([propertyName isEqualToString:#"readingType"] ||
[propertyName isEqualToString:#"guidId"] ||
[propertyName isEqualToString:#"longitude"] ||
[propertyName isEqualToString:#"latitude"])
{
return YES;
}
return NO;
}
Example of JSON I need to convert to my model.
[
{
"created_at": "2015-03-20T19:26:28.000Z",
"location": [
40.70739851802653,
-74.005788154969
],
"altitude": 4.063048774263429,
"relative_altitude": 0.0,
"name": "pressure",
"value": 1014.718704223633,
"scale": "mb"
},
{
"created_at": "2015-03-20T19:26:28.000Z",
"location": [
40.70739851802653,
-74.005788154969
],
"altitude": 4.063048774263429,
"relative_altitude": 0.0,
"name": "pressure",
"value": 1014.718704223633,
"scale": null
}
]
The above with [JSONModel arrayOfModelsFromDictionaries:json error:&error] will throw the following error.
Error Domain=JSONModelErrorDomain Code=1 "Invalid JSON data: Value of required model key scale is null" UserInfo=0x170265cc0 {NSLocalizedDescription=Invalid JSON data: Value of required model key scale is null, kJSONModelKeyPath=[46].scale}
Any ideas what is wrong?

Answer 1

Just try using +(BOOL)propertyIsOptional:(NSString*)propertyName

Answer 2

Using this on .m file
+(BOOL)propertyIsOptional:(NSString*)propertyName
{
if([propertyName isEqualToString:#"somePropertyNameWhichShouldbeIgnored"])
return YES;
return NO;
}