It was easier than I thought:
- Exclude property in
+encodingBehaviorsByPropertyKey
- Manual encode/encode excluded property
Sample:
#pragma mark - MTLModel + NSCoding
- (id)initWithCoder:(NSCoder *)coder {
self = [super initWithCoder:coder];
if (self) {
self.rect = [[self class] mRectFromData:[coder decodeObjectForKey:@"rectData"]];
}
return self;
}
- (void)encodeWithCoder:(NSCoder *)coder {
[super encodeWithCoder:coder];
[coder encodeObject:[[self class] dataFromMRect:self.rect] forKey:@"rectData"];
}
+ (NSDictionary *)encodingBehaviorsByPropertyKey {
NSDictionary *excludeProperties = @{
NSStringFromSelector(@selector(rect)): @(MTLModelEncodingBehaviorExcluded)
};
NSDictionary *encodingBehaviors = [[super encodingBehaviorsByPropertyKey] mtl_dictionaryByAddingEntriesFromDictionary:excludeProperties];
return encodingBehaviors;
}
#pragma mark - MRect transformations
+ (MRect)mRectFromData:(NSData *)rectData {
MRect rect;
[rectData getBytes:&rect length:sizeof(rect)];
return rect;
}
+ (NSData *)dataFromMRect:(MRect)rect {
return [NSData dataWithBytes:&rect length:sizeof(rect)];
}