object is not saved in array - ios

Question

I have the following code that parses json into custom objects, parsing works fine i have a problem with saving the objects.
-(void)handleCities:(NSNotification *)notification
{
[[NSNotificationCenter defaultCenter] removeObserver:self name:#"_getInitialData" object:nil];
if(![notification object])
{
NSLog(#"Something went wrong");
return;
}
// Convert data to a dictionary
NSMutableDictionary * data = [NSJSONSerialization JSONObjectWithData:(NSMutableData *) [notification object] options:NSJSONReadingMutableContainers error:nil];
// Loop over all the data
if([data objectForKey:#"data"] != (id)kCFBooleanFalse)
{
for(int i = 0; i < [[[data objectForKey:#"data"] objectForKey:#"cities"] count]; i++)
{
CityObject * object = [[CityObject alloc] init];
// Loop over all the properties
for(NSString * key in [[[data objectForKey:#"data"] objectForKey:#"cities" ] objectAtIndex:i])
{
NSString * _key = key;
if([object._remap objectForKey:key])
{
NSString * value = [object._remap objectForKey:_key];
NSLog(#"Notice [%#] Remapping \"%#\" to \"%#\"", self.class, _key, value);
_key = value;
}
// Save the value for easy access
NSString * value = [[[[data objectForKey:#"data"] objectForKey:#"cities" ] objectAtIndex:i] objectForKey:_key];
// Does the value have a value
if((id)value == [NSNull null])
{
value = #"";
}
// Set the value for key
[object setValue:value forKey:_key];
}
NSMutableDictionary * set = [[[data objectForKey:#"data"] objectForKey:#"cities"] objectAtIndex:i];
int count = (int)[[set objectForKey:#"categories"] count];
for(int b = 0; b < count; b++)
{
CategoryObject * category = [[CategoryObject alloc] init];
for(NSString * key in [[set objectForKey:#"categories"] objectAtIndex:b])
{
NSString * value = [[[set objectForKey:#"categories"] objectAtIndex:b] objectForKey:key];
if((id)value == [NSNull null])
{
value = #"";
}
[category setValue:value forKey:key];
}
NSLog(#"Category %#",category.class);
NSLog(#"Object : %#",object.class);
NSLog(#"Object Categories : %#",object.categories.class);
// i can print the category object fine here
[object.categories addObject:(CategoryObject *)category];
}
[self.cities addObject:object];
}
}
CityObject * city = [self.cities objectAtIndex:0];
CategoryObject * category = [city.categories objectAtIndex:0];
NSLog(#"Category Name : %#", category.name);
[[NSNotificationCenter defaultCenter] removeObserver:self name:#"_getInitialData" object:nil];
[[NSNotificationCenter defaultCenter] postNotificationName:#"getInitialData" object:nil];
}
CityObject.h
#import <Foundation/Foundation.h>
#import "Object.h"
#interface CityObject : Object
#property (nonatomic, strong) NSString * name;
#property (nonatomic, strong) NSString * id;
#property (nonatomic, strong) NSString * state;
#property (nonatomic, strong) NSString * image;
#property (nonatomic, strong) NSString * term_order;
#property (nonatomic, strong) NSMutableArray * categories;
#property (nonatomic, strong) NSMutableDictionary * _remap;
#end
CityObject.m
#import "CityObject.h"
#implementation CityObject
-(id)init
{
if(self = [super init])
{
self._remap = [[NSMutableDictionary alloc] init];
self.categories = [[NSMutableArray alloc] init];
[self._remap setObject:#"state" forKey:#"new_city"];
}
return self;
}
#end
CategoryObject.h
#import <Foundation/Foundation.h>
#import "Object.h"
#interface CategoryObject : Object
#property (nonatomic, strong) NSString * name;
#property (nonatomic, strong) NSString * icon;
#property (nonatomic, strong) NSString * id;
#end
Before i add the CategoryObject to my array i can retrieve the values without a problem it is when i NSLog at the end i cannot get the values / objects out of the array's.
What am i doing wrong since it works great when i add the CityObjects but not when i "parse" the categories. I can read them fine before i add them to the object.categories
Error / Output
-[__NSDictionaryM name]: unrecognized selector sent to instance 0x7a482760
2015-03-24 09:21:05.649 10things[16968:337325] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSDictionaryM name]: unrecognized selector sent to instance 0x7a482760'

Answer 1

Problem solved, i did not have a strong pointer to the model, the Dictionary was magically being replaced to a NSMutableDictionary Once i had a strong handle everything worked properly. (thanks for the code feedback)