Persisting a CMUser subclass.

KPUser.h

//
//  KPUser.h
//  Header File
//

#import <CloudMine/CloudMine.h>

@interface KPUser : CMUser

@property (nonatomic, copy) NSString *firstName;
@property (nonatomic, copy) NSString *lastName;

- (void)persist;
+ (KPUser *)getPersistedUser;

@end

KPUser.m

//
//  KPUser.m
//  Implementation File
//

#import "KPUser.h"

NSString *const FirstNameKey = @"firstName";
NSString *const LastNameKey = @"lastName";
NSString *const UserPersistanceKey = @"com.cloudmine.kpuser";

@implementation KPUser

- (void)encodeWithCoder:(NSCoder *)aCoder {
    [super encodeWithCoder:aCoder];
    [aCoder encodeObject:self.firstName forKey:FirstNameKey];
    [aCoder encodeObject:self.lastName forKey:LastNameKey];
}

- (id) initWithCoder:(NSCoder *)aDecoder {
    self = [super initWithCoder:aDecoder];
    
    if (self) {
        self.firstName = [aDecoder decodeObjectForKey:FirstNameKey];
        self.lastName  = [aDecoder decodeObjectForKey:LastNameKey];
    }

    return self;
}


+ (KPUser *)getPersistedUser {
    
    KPUser *user = nil;
    
    NSData *userData = [[NSUserDefaults standardUserDefaults] objectForKey:UserPersistanceKey];
    
    if (userData) {
        user = [NSKeyedUnarchiver unarchiveObjectWithData:userData];
    } else {
        ///
        ///  No User found...
        ///
        return nil;
    }
    
    // Set this user as the user of the default store
    CMStore *store = [CMStore defaultStore];
    store.user = user;
    return user;
}


- (void)persist {
    [[CMStore defaultStore] setUser:self];
    [[NSUserDefaults standardUserDefaults] setObject:[NSKeyedArchiver archivedDataWithRootObject:self] forKey:UserPersistanceKey];
    [[NSUserDefaults standardUserDefaults] synchronize];
}