gistfile1.m

//
//  Model.h
//
//  Created by Matthew Smith on 5/21/14.
//  Copyright (c) 2014 LatteJed. All rights reserved.
//

static NSString* const kNotificationURLDidUpdate = @"kNotificationURLDidUpdate";

@interface Model : NSObject

@property (nonatomic, copy) NSURL* url;

@end

//
//  Model.m
//
//  Created by Matthew Smith on 5/21/14.
//  Copyright (c) 2014 LatteJed. All rights reserved.
//

#import "Model.h"

@implementation Model

- (void)setUrl:(NSURL *)url;
{
    _url = url;
    [[NSNotificationCenter defaultCenter] postNotificationName:kNotificationURLDidUpdate
                                                        object:self];
}

@end