ios RestKit post attached UIImage - ios

Question

I am trying to post an image to my server using RestKit and map response from server. But server always back that file I am sending is nil.
Could anyone help me with that issue?
NSData *data = UIImageJPEGRepresentation(imageData, 1.0);
NSDictionary *params = [[NSDictionary alloc] initWithObjectsAndKeys:
data, #"avatar",
nil];
RKObjectMapping* objectMapping = [RKObjectMapping mappingForClass:[UpdateAvatar class]];
[objectMapping addAttributeMappingsFromDictionary:#{
#"message" : #"message"
}];
NSIndexSet *successStatusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful);
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:objectMapping
method:RKRequestMethodPOST
pathPattern:nil
keyPath:nil
statusCodes:successStatusCodes];
RKObjectManager *objectManager = [RKObjectManager managerWithBaseURL:[self defineBaseUrl]];
[[objectManager HTTPClient] setDefaultHeader:#"device_uid" value:[self getDeviceUid]];
[RKMIMETypeSerialization registerClass:[RKNSJSONSerialization class] forMIMEType:#"image/jpeg"];
[objectManager setAcceptHeaderWithMIMEType:#"multipart/form-data"];
[objectManager setRequestSerializationMIMEType:RKMIMETypeJSON];
objectManager.requestSerializationMIMEType = RKMIMETypeJSON;
[objectManager addResponseDescriptor:responseDescriptor];
[objectManager postObject:nil path:#"/api/upload-avatar" parameters:params success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
NSLog(#"%#", mappingResult.array);
for (UpdateAvatar *obj in mappingResult.array) {
NSLog(#"MESSAGE: %#", obj.message);
[[DataManager sharedManager] setMessage:obj.message];
}
[SVProgressHUD showSuccessWithStatus:#"Profile Picture Updated"];
//[[NSNotificationCenter defaultCenter] postNotificationName:#"didRegistered" object:nil];
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
NSLog(#"%#", error);
}];

Answer 1

I have solved my issue with Documentation from RESTKit itself.
Maybe it will help to someone else:
NSData *data = UIImageJPEGRepresentation(imageData, 0.3);
RKObjectMapping* objectMapping = [RKObjectMapping mappingForClass:[UpdateAvatar class]];
[objectMapping addAttributeMappingsFromDictionary:#{
#"message" : #"message"
}];
NSIndexSet *successStatusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful);
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:objectMapping
method:RKRequestMethodPOST
pathPattern:nil
keyPath:nil
statusCodes:successStatusCodes];
RKObjectManager *objectManager = [RKObjectManager managerWithBaseURL:[DataManager defineBaseUrl]];
[[objectManager HTTPClient] setDefaultHeader:#"device_uid" value:[self getDeviceUid]];
[objectManager addResponseDescriptor:responseDescriptor];
NSMutableURLRequest *request = [[RKObjectManager sharedManager] multipartFormRequestWithObject:nil method:RKRequestMethodPOST path:#"/api/upload-avatar" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
[formData appendPartWithFileData:data
name:#"avatar"
fileName:#"image.jpeg"
mimeType:#"image/jpeg"];
}];
RKObjectRequestOperation *operation = [objectManager objectRequestOperationWithRequest:request success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
for (UpdateAvatar *obj in mappingResult.array) {
[SVProgressHUD setBackgroundColor:[UIColor colorWithRed:0.31 green:0.31 blue:0.31 alpha:0.5]];
[SVProgressHUD setRingThickness:2];
[SVProgressHUD setForegroundColor:[UIColor whiteColor]];
[SVProgressHUD showSuccessWithStatus:[NSString stringWithFormat:#"Uploading avatar\n %#", obj.message]];
}
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
NSLog(#"Failure");
}];
[[RKObjectManager sharedManager] enqueueObjectRequestOperation:operation];