Convenient keypath for finding whether a request completed successfully.

AFHTTPRequestOperation+JLPOperationDidSucceed.h

//
//  AFHTTPRequestOperation+JLPOperationDidSucceed.h
//
//  Created by @swizzlr on 11/07/2013.
//  BSD two clause license
//

@class AFHTTPRequestOperation;

@interface AFHTTPRequestOperation (JLPOperationDidSucceed)

-(BOOL)jlp_HTTPRequestOperationDidSucceed;

@end

/*

Mostly for use as a keypath with collection operator for a collection AFHTTPRequestOperations, like so:

[AFHTTPClient enqueueBatchOfHTTPRequestOperations:prioritySyncOperations progressBlock:nil completionBlock:^(NSArray *operations) {
        if (![[operations valueForKeyPath:@"@unionOfObjects.jlp_HTTPRequestOperationDidSucceed"] containsObject:@NO]) {
            //All operations succeeded: they finished, they had an acceptable status code and acceptable content type
        } else {
            //At least one didn't: display an error, requeue again...
        }
}];

*/

AFHTTPRequestOperation+JLPOperationDidSucceed.m

//
//  AFHTTPRequestOperation+JLPOperationDidSucceed.m
//
//  Created by @swizzlr on 11/07/2013.
//  BSD two clause license
//

#import "AFHTTPRequestOperation.h"
#import "AFHTTPRequestOperation+JLPOperationDidSucceed.h"

@implementation AFHTTPRequestOperation (JLPOperationDidSucceed)

- (BOOL)jlp_HTTPRequestOperationDidSucceed {
    if (self.isFinished && self.hasAcceptableContentType && self.hasAcceptableStatusCode) {
        return YES;
    }

    return NO;
}

@end

APPARENTLY YOU CAN JUST CHECK FOR AN ERROR

(!operation.error)