Object Mappings Relationship using RestKit 0.20 - ios

Question

I am trying to read data from server using RestKit 0.20 in my iOS app and getting the following error :
//Error
`… I restkit:RKLog.m:34 RestKit logging initialized...`
`… I restkit.support:RKMIMETypeSerialization.m:115 JSON Serialization class 'RKNSJSONSerialization' detected: Registering for MIME Type 'application/json`
`... T restkit.network:RKHTTPRequestOperation.m:139 GET '(null)':
request.headers={
Accept = "application/json";
"Accept-Language" = "en, fr, de, ja, nl, it, es, pt, pt-PT, da, fi, nb, sv, ko, zh-Hans, zh-Hant, ru, pl, tr, uk, ar, hr, cs, el, he, ro, sk, th, id, ms, en-GB, ca, hu, vi, en-us;q=0.8";
"User-Agent" = "XXXXX/1.0 (iPhone Simulator; iOS 5.0; Scale/1.00)";
}
request.body=(null)`
`... E restkit.network:RKHTTPRequestOperation.m:150 GET '(null)' (0):
error=Error Domain=NSURLErrorDomain Code=-1000 "bad URL" UserInfo=0x6c9d570 {NSUnderlyingError=0x6c9d460 "bad URL", NSLocalizedDescription=bad URL}
response.body=(null)`
`... E restkit.network:RKObjectRequestOperation.m:270 Object request failed: Underlying HTTP request operation failed with error: Error Domain=NSURLErrorDomain Code=-1000 "bad URL" UserInfo=0x6c9d570 {NSUnderlyingError=0x6c9d460 "bad URL", NSLocalizedDescription=bad URL}`
`... Hit error: Error Domain=NSURLErrorDomain Code=-1000 "bad URL" UserInfo=0x6c9d570 {NSUnderlyingError=0x6c9d460 "bad URL", NSLocalizedDescription=bad URL}`
Here is the JSON received from server:
[ {
"array1" : [ {
"a1prop1" : 1,
"a1prop2" : "prop21val",
}, {
"a1prop1" : 2,
"a1prop2" : "prop22val",
}, {
"a1prop1" : 3,
"a1prop2" : "prop23val",
} ],
"property1" : prop1val,
"property2" : "prop2val",
"property3" : "prop3val",
} ]
Mappings using RestKit:
-(void) getData {
………………...
NSURL *baseURL = [NSURL URLWithString:stringURL];
AFHTTPClient* client = [[AFHTTPClient alloc] initWithBaseURL:baseURL];
[client setDefaultHeader:#"Accept" value:RKMIMETypeJSON];
RKObjectManager *objectManager = [[RKObjectManager alloc] initWithHTTPClient:client];
[objectManager setAcceptHeaderWithMIMEType:RKMIMETypeJSON];
RKObjectMapping *array1Mapping = [RKObjectMapping mappingForClass:[ArrayOneClass class]];
[array1Mapping addAttributeMappingsFromDictionary:#{
#"a1Prop1" : #"a1Prop1",
#"a1Prop2" : #"a1Prop2",
}];
RKObjectMapping *mainObjectMapping = [RKObjectMapping mappingForClass:[MainObjectClass class]]
[mainObjectMapping addAttributeMappingsFromDictionary:#{
#"property1" : #"property1",
#"property2" : #"property2",
#"property3" : #"property3",
}];
RKRelationshipMapping *mainObjRelationMapping = [RKRelationshipMapping relationshipMappingFromKeyPath:#"array1" toKeyPath:#"array1" withMapping:array1Mapping];
[mainObjectMapping addRelationshipMappingWithSourceKeyPath:#"array1" mapping: mainObjRelationMapping.mapping];
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:mainObjectMapping pathPattern:nil
keyPath:nil
statusCodes:[NSIndexSet indexSetWithIndex:200]];
[objectManager addResponseDescriptor:responseDescriptor];
NSString *pathStr = [NSString stringWithFormat:#"/api/getAllObjects"];
[objectManager getObjectsAtPath:pathStr
parameters:nil
success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
NSLog(#"...success");
}
failure:^(RKObjectRequestOperation *operation, NSError *error) {
NSLog(#"Hit error: %#", error);
}];
}
MainObject Class:
//MainObjectClass.h
#interface MainObjectClass : NSObject{
int property1;
NSString * property2;
NSString * property3;
NSSet *array1;
}
#property (nonatomic) int property1;
#property (nonatomic, retain) NSString * property2;
#property (nonatomic, retain) NSString * property3;
#property (nonatomic, retain) NSSet *array1;
- (NSDictionary*)elementToPropertyMappings;
- (NSDictionary*)elementToRelationshipMappings;
#end
//MainObjectClass.m
#implementation MainObjectClass
#synthesize property1, property2, property3, array1;
- (NSDictionary*)elementToPropertyMappings {
return [NSDictionary dictionaryWithObjectsAndKeys:
#"property1", #"property1",
#"property2", #"property2",
#"property3", #"property3",
nil];
}
- (NSDictionary *)elementToRelationshipMappings {
return [NSDictionary dictionaryWithObjectsAndKeys:
#"array1", #"array1",
nil];
}
#end
Can anyone please tell me why this is not generating proper request? It is not hitting the server at all. I tried simple get/post methods with no relationship mappings and they all are working fine with RestKit mappings. Appreciate your views. Thanks.

Answer 1

try this :- use property of RKObjectManager
objectManager.serializationMIMEType = RKMIMETypeJSON;